/* Apply inverse BT.1886 processing black point hue adjustment to the XYZ value */
void bt1886_inv_wp_adjust(bt1886_info *p, double *out, double *in) {
double vv;
#ifdef DEBUG
a1logd(g_log, 2, "bt1886 XYZ inv. wp adj. in %f %f %f\n", in[0],in[1],in[2]);
#endif
icmXYZ2Lab(&p->w, out, in);
#ifdef DEBUG
a1logd(g_log, 2, "bt1886 Lab inv. wp adj. in %f %f %f\n", out[0],out[1],out[2]);
#endif
/* Blend ab to required black point offset p->tab[] as L approaches black. */
vv = (out[0] - p->outL)/(100.0 - p->outL); /* 0 at bp, 1 at wp */
vv = 1.0 - vv;
if (vv < 0.0)
vv = 0.0;
else if (vv > 1.0)
vv = 1.0;
vv = pow(vv, 40.0);
out[1] -= vv * p->tab[0];
out[2] -= vv * p->tab[1];
#ifdef DEBUG
a1logd(g_log, 2, "bt1886 Lab after inv. wp adj. %f %f %f\n", out[0],out[1],out[2]);
#endif
icmLab2XYZ(&p->w, out, out);
#ifdef DEBUG
a1logd(g_log, 2, "bt1886 XYZ after inv. wp adj. %f %f %f\n", out[0],out[1],out[2]);
#endif
}
/* Pure BT.1886 will have outopro = 0.0 and gamma = 2.4 */
void bt1886_setup(
bt1886_info *p,
icmXYZNumber *w, /* wp used for L*a*b* conversion */
double *XYZbp, /* normalised bp used for black offset and black point hue "bend" */
double outoprop, /* 0..1 proportion of output black point compensation */
double gamma, /* technical or effective gamma */
int effg /* nz if effective gamma, z if technical gamma */
) {
double Lab[3], ino, bkipow, wtipow;
icmXYZ2XYZ(p->w, *w);
#ifdef DEBUG
a1logd(g_log, 2, "bt1886_setup wp.Y %f, bp.Y %f, outprop %f, gamma %f, effg %d", p->w.Y, XYZbp[1], outoprop, gamma, effg);
#endif
if (effg) {
p->gamma = xicc_tech_gamma(gamma, XYZbp[1], outoprop);
#ifdef DEBUG
a1logd(g_log, 2, "bt1886_setup tgamma %f", p->gamma);
#endif
} else {
p->gamma = gamma;
}
icmXYZ2Lab(&p->w, Lab, XYZbp);
p->outL = Lab[0]; /* For bp blend comp. */
p->tab[0] = Lab[1]; /* a* b* correction needed */
p->tab[1] = Lab[2];
#ifdef DEBUG
a1logd(g_log, 2, "bt1886_setup bend Lab = %f %f %f", p->outL, p->tab[0], p->tab[1]);
#endif
if (XYZbp[1] < 0.0)
XYZbp[1] = 0.0;
p->outo = XYZbp[1] * outoprop; /* Offset acounted for in output */
ino = XYZbp[1] - p->outo; /* Balance of offset accounted for in input */
bkipow = pow(ino, 1.0/p->gamma); /* Input offset black to 1/pow */
wtipow = pow((1.0 - p->outo), 1.0/p->gamma); /* Input offset white to 1/pow */
#ifdef DEBUG
a1logd(g_log, 2, "bt1886_setup outo %f, ino %f, bkipow %f, wtipow %f", p->outo, ino, bkipow, wtipow);
#endif
p->ingo = bkipow/(wtipow - bkipow); /* non-linear Y that makes input offset */
/* proportion of black point */
p->outsc = pow(wtipow - bkipow, p->gamma); /* Scale to make input of 1 map to */
/* 1.0 - p->outo */
#ifdef DEBUG
a1logd(g_log, 2, "bt1886_setup ingo %f, outsc %f", p->ingo, p->outsc);
#endif
}
/* It's not clear if the white weighting is advantagous or not. */
double optf(void *fdata, double *tp) {
cntx *cx = (cntx *)fdata;
int i;
double de;
double m[3][3];
m[0][0] = tp[0];
m[0][1] = tp[1];
m[0][2] = tp[2];
m[1][0] = tp[3];
m[1][1] = tp[4];
m[1][2] = tp[5];
m[2][0] = tp[6];
m[2][1] = tp[7];
m[2][2] = tp[8];
for (de = 0.0, i = 0; i < cx->npat; i++) {
double tlab[3], xyz[3], lab[3];
icmXYZ2Lab(&cx->wh, tlab, cx->refs[i]);
icmMulBy3x3(xyz, m, cx->cols[i]);
icmXYZ2Lab(&cx->wh, lab, xyz);
if (i == cx->wix)
de += cx->npat/4.0 * wCIE94sq(tlab, lab); /* Make white weight = 1/4 all others */
else
de += wCIE94sq(tlab, lab);
//printf("~1 %d: txyz %f %f %f, tlab %f %f %f\n", i,cx->refs[i][0], cx->refs[i][1], cx->refs[i][2], tlab[0], tlab[1], tlab[2]);
//printf("~1 %d: xyz %f %f %f\n", i,cx->cols[i][0], cx->cols[i][1], cx->cols[i][2]);
//printf("~1 %d: mxyz %f %f %f, lab %f %f %f\n", i,xyz[0], xyz[1], xyz[2], lab[0], lab[1], lab[2]);
//printf("~1 %d: de %f\n", i,wCIE94(tlab, lab));
}
de /= cx->npat;
#ifdef DEBUG
// printf("~1 return values = %f\n",de);
#endif
return de;
}
/* (This is used in generating gamut compression in B2A tables) */
void icxLuMatrix_bwd_outpcs_relpcs(
icxLuBase *pp,
icColorSpaceSignature os, /* Output space, XYZ or Lab */
double *out, double *in) {
icxLuMatrix *p = (icxLuMatrix *)pp;
icxLuMatrixFwd_abs(p, out, in);
if (os == icSigXYZData && p->natpcs == icSigLabData) {
icmLab2XYZ(&icmD50, out, out);
} else if (os == icSigXYZData && p->natpcs == icSigLabData) {
icmXYZ2Lab(&icmD50, out, out);
}
}
/* This function is for optimising the gamma function */
double efunc1(void *edata, double p[]) {
edatas *ed = (edatas *)edata;
double rv;
col *cp;
for (rv = 0.0, cp = &ed->cols[ed->npat-1]; cp >= &ed->cols[0]; cp--) {
double cc,mm,yy,kk;
double nc,nm,ny,nk;
double XYZ[3], Lab[3];
int j;
/* Apply gamma correction to each input */
for (j = 0; j < 4; j++) {
if (p[j] < 0.2)
p[j] = 0.2;
else if (p[j] > 5.0)
p[j] = 5.0;
}
cc = pow(cp->c, p[0]);
nc = 1.0 - cc;
mm = pow(cp->m, p[1]);
nm = 1.0 - mm;
yy = pow(cp->y, p[2]);
ny = 1.0 - yy;
kk = pow(cp->k, p[3]);
nk = 1.0 - kk;
/* Then interpolate between all combinations of primaries. */
/* plus one that stands for all that are close to black */
for (j = 0; j < 3; j++) {
XYZ[j] = nc * nm * ny * nk * ed->k[j][0]
+ nc * nm * yy * nk * ed->k[j][1]
+ nc * mm * ny * nk * ed->k[j][2]
+ nc * mm * yy * nk * ed->k[j][3]
+ cc * nm * ny * nk * ed->k[j][4]
+ cc * nm * yy * nk * ed->k[j][5]
+ cc * mm * ny * nk * ed->k[j][6]
+ (cc * mm * yy * nk + kk) * ed->k[j][7];
}
icmXYZ2Lab(&icmD50, Lab, XYZ);
rv += cp->err = icmLabDEsq(Lab, cp->Lab);
}
printf("Efunc1 returning %f\n",rv);
return rv;
}
/* Matrix optimisation function handed to powell() */
static double mxoptfunc(void *edata, double *v) {
mxopt *p = (mxopt *)edata;
double rv = 0.0, smv;
double xyz[3], lab[3];
int i;
for (i = 0; i < p->nodp; i++) {
/* Apply our function */
//printf("%f %f %f -> %f %f %f\n", p->points[i].p[0], p->points[i].p[1], p->points[i].p[2],
//xyz[0], xyz[1], xyz[2]);
mxmfunc(p, v, xyz, p->points[i].p);
/* Convert to Lab */
icmXYZ2Lab(&icmD50, lab, xyz);
//printf("%f %f %f -> %f %f %f, target %f %f %f\n", p->points[i].p[0], p->points[i].p[1], p->points[i].p[2],
//lab[0], lab[1], lab[2], p->points[i].v[0], p->points[i].v[1], p->points[i].v[2]);
/* Accumulate total delta E squared */
#ifdef USE_CIE94_DE
rv += p->points[i].w * icmCIE94sq(lab, p->points[i].v);
#else
rv += p->points[i].w * icmLabDEsq(lab, p->points[i].v);
#endif
}
/* Normalise error to be an average delta E squared */
rv /= (double)p->nodp;
/* Sum with shaper parameters squared, to */
/* minimise unsconstrained "wiggles" */
smv = xshapmag(p, v);
rv += smv;
#ifdef DEBUG
printf("~9(%f)mxoptfunc returning %f\n",smv,rv);
#endif
return rv;
}
/* This function is for optimising the primary values */
double efunc2(void *edata, double p[]) {
edatas *ed = (edatas *)edata;
int j, os = ed->xyzi;
double tt, rv;
col *cp;
rv = 0.0;
for (j = 0; j < 8; j++) {
if (p[j] < 0.0) { /* Protect against silly values */
p[j] = 0.0;
rv += 1000.0;
}
else if (p[j] > 1.5) {
p[j] = 1.5;
rv += 1000.0;
}
ed->k[os][j] = p[j]; /* Load into current */
}
/* Compute error */
for (cp = &ed->cols[ed->npat-1]; cp >= &ed->cols[0]; cp--) {
double XYZ[3], Lab[3];
for (os = 0; os < 3; os++) {
/* Interpolate between all combinations of primaries. */
for (tt = 0.0, j = 0; j < 8; j++)
tt += cp->bc[j] * ed->k[os][j];
XYZ[os] = tt;
}
icmXYZ2Lab(&icmD50, Lab, XYZ);
rv += cp->err = icmLabDEsq(Lab, cp->Lab);
}
printf("Efunc2 returning %f\n",rv);
return rv;
}
int
main(int argc, char *argv[]) {
int fa,nfa; /* argument we're looking at */
struct {
char name[MAXNAMEL+1]; /* Patch filename */
int npat; /* Number of patches */
pval *pat; /* patch values */
} cg[2]; /* Target and current patch file information */
char dev_name[MAXNAMEL+1]; /* Output device ICC filename for gamut */
char rd_name[MAXNAMEL+1]; /* Abstract profile ICC to modify */
char wr_name[MAXNAMEL+1]; /* Modified/created abstract profile ICC */
int dorel = 0; /* Do white point relative match */
int *match; /* Array mapping first list indexes to corresponding second */
int fwacomp = 0; /* FWA compensation on spectral ? */
int spec = 0; /* Use spectral data flag */
icxIllumeType illum = icxIT_D50; /* Spectral defaults */
xspect cust_illum; /* Custom illumination spectrum */
icxObserverType observ = icxOT_Judd_Voss_2;
callback cb; /* Callback support stucture for setting abstract profile */
icmFile *rd_fp = NULL; /* Existing abstract profile to modify */
icc *rd_icc = NULL;
icmFile *wr_fp; /* Modified/created abstract profile to write */
icc *wr_icc;
int verb = 0;
int nogamut = 0; /* Don't impose a gamut limit */
int docreate = 0; /* Create an initial abstract correction profile */
int clutres = DEF_CLUTRES; /* Output abstract profile clut resolution */
double damp1 = DEF_DAMP1; /* Initial damping factor */
double damp2 = DEF_DAMP2; /* Subsequent damping factor */
double smoothf = SMOOTHF; /* RSPL Smoothing factor */
double avgdev[MXDO]; /* RSPL Average Deviation */
double wweight = WWEIGHT; /* weak default function weight */
int whitepatch = -1; /* Index of white patch */
double merr = 0.0, aerr = 0.0; /* Stats on color change */
int i, j, e, n, rv = 0;
error_program = argv[0];
if (argc < 6)
usage("Too few arguments");
/* Process the arguments */
for(fa = 1;fa < argc;fa++) {
nfa = fa; /* skip to nfa if next argument is used */
if (argv[fa][0] == '-') { /* Look for any flags */
char *na = NULL; /* next argument after flag, null if none */
if (argv[fa][2] != '\000')
na = &argv[fa][2]; /* next is directly after flag */
else {
if ((fa+1) < argc) {
if (argv[fa+1][0] != '-') {
nfa = fa + 1;
na = argv[nfa]; /* next is seperate non-flag argument */
}
}
}
if (argv[fa][1] == '?')
usage("Usage requested");
/* Verbosity */
else if (argv[fa][1] == 'v' || argv[fa][1] == 'V') {
verb = 1;
}
/* Create initial abstract correction profile */
else if (argv[fa][1] == 'c' || argv[fa][1] == 'C') {
docreate = 1;
}
/* Don't impose a gamut limit */
else if (argv[fa][1] == 'g' || argv[fa][1] == 'G') {
nogamut = 1;
}
/* Override the correction clut resolution */
else if (argv[fa][1] == 'r') {
fa = nfa;
if (na == NULL) usage("Expect argument to -r");
clutres = atoi(na);
}
/* Override the damping factor */
else if (argv[fa][1] == 'd' || argv[fa][1] == 'D') {
fa = nfa;
if (na == NULL) usage("Expect argument to -d");
damp2 = atof(na);
}
/* Aim for white point relative match */
else if (argv[fa][1] == 'R') {
dorel = 1;
}
/* Spectral Illuminant type */
else if (argv[fa][1] == 'i' || argv[fa][1] == 'I') {
fa = nfa;
if (na == NULL) usage("Expect argument to -i");
if (strcmp(na, "A") == 0) {
spec = 1;
illum = icxIT_A;
} else if (strcmp(na, "C") == 0) {
spec = 1;
illum = icxIT_C;
} else if (strcmp(na, "D50") == 0) {
spec = 1;
illum = icxIT_D50;
} else if (strcmp(na, "D65") == 0) {
spec = 1;
illum = icxIT_D65;
} else if (strcmp(na, "F5") == 0) {
spec = 1;
illum = icxIT_F5;
} else if (strcmp(na, "F8") == 0) {
spec = 1;
illum = icxIT_F8;
} else if (strcmp(na, "F10") == 0) {
spec = 1;
illum = icxIT_F10;
} else { /* Assume it's a filename */
spec = 1;
illum = icxIT_custom;
if (read_xspect(&cust_illum, na) != 0)
usage("Unable to read custom spectrum '%s'",na);
}
}
/* Spectral Observer type */
else if (argv[fa][1] == 'o' || argv[fa][1] == 'O') {
fa = nfa;
if (na == NULL) usage("Expected argument to -o");
if (strcmp(na, "1931_2") == 0) { /* Classic 2 degree */
spec = 1;
observ = icxOT_CIE_1931_2;
} else if (strcmp(na, "1964_10") == 0) { /* Classic 10 degree */
spec = 1;
observ = icxOT_CIE_1964_10;
} else if (strcmp(na, "1955_2") == 0) { /* Stiles and Burch 1955 2 degree */
spec = 1;
observ = icxOT_Stiles_Burch_2;
} else if (strcmp(na, "1978_2") == 0) { /* Judd and Voss 1978 2 degree */
spec = 1;
observ = icxOT_Judd_Voss_2;
} else if (strcmp(na, "shaw") == 0) { /* Shaw and Fairchilds 1997 2 degree */
spec = 1;
observ = icxOT_Shaw_Fairchild_2;
} else
usage("Unrecogised argument '%s' to -o",na);
}
/* FWA compensation */
else if (argv[fa][1] == 'f' || argv[fa][1] == 'F')
fwacomp = 1;
else
usage("Unrecognised flag -%c",argv[fa][1]);
} else
break;
}
/* Grab all the filenames: */
/* The two CIE value files */
if (fa >= argc || argv[fa][0] == '-') usage("Expected cietarget file argument");
strncpy(cg[0].name,argv[fa++],MAXNAMEL); cg[0].name[MAXNAMEL] = '\000';
if (fa >= argc || argv[fa][0] == '-') usage("Expected ciecurrent file argument");
strncpy(cg[1].name,argv[fa++],MAXNAMEL); cg[1].name[MAXNAMEL] = '\000';
/* Optional output device name */
if (nogamut == 0) {
if (fa >= argc || argv[fa][0] == '-') usage("Expected outdevicc file argument");
strncpy(dev_name,argv[fa++],MAXNAMEL); dev_name[MAXNAMEL] = '\000';
}
/* Optional input abstract profile name */
if (docreate == 0) {
if (fa >= argc || argv[fa][0] == '-') usage("Expected inabs file argument");
strncpy(rd_name,argv[fa++],MAXNAMEL); rd_name[MAXNAMEL] = '\000';
}
/* Output abstract profile name */
if (fa >= argc || argv[fa][0] == '-') usage("Expected outabs file argument");
strncpy(wr_name,argv[fa++],MAXNAMEL); wr_name[MAXNAMEL] = '\000';
/* ======================= */
/* Open up each CIE file in turn, target then measured, */
/* and read in the CIE values. */
for (n = 0; n < 2; n++) {
cgats *cgf = NULL; /* cgats file data */
int isLab = 0; /* 0 if file CIE is XYZ, 1 if is Lab */
int sidx; /* Sample ID index */
int xix, yix, zix;
/* Open CIE target values */
cgf = new_cgats(); /* Create a CGATS structure */
cgf->add_other(cgf, ""); /* Allow any signature file */
if (cgf->read_name(cgf, cg[n].name))
error("CGATS file '%s' read error : %s",cg[n].name,cgf->err);
if (cgf->ntables < 1)
error ("Input file '%s' doesn't contain at least one table",cg[n].name);
/* Check if the file is suitable */
if (!spec
&& cgf->find_field(cgf, 0, "LAB_L") < 0
&& cgf->find_field(cgf, 0, "XYZ_X") < 0) {
if (cgf->find_kword(cgf, 0, "SPECTRAL_BANDS") < 0)
error ("Neither CIE nor spectral data found in file '%s'",cg[n].name);
/* Switch to using spectral information */
if (verb)
printf("No CIE data found, switching to spectral with standard observer & D50 for file '%s'\n",cg[n].name);
spec = 1;
illum = icxIT_D50;
observ = icxOT_CIE_1931_2;
}
if (spec && cgf->find_kword(cgf, 0, "SPECTRAL_BANDS") < 0)
error ("No spectral data data found in file '%s' when spectral expected",cg[n].name);
if (!spec && cgf->find_field(cgf, 0, "LAB_L") >= 0)
isLab = 1;
cg[n].npat = cgf->t[0].nsets; /* Number of patches */
/* Read all the target patches */
if (cg[n].npat <= 0)
error("No sets of data in file '%s'",cg[n].name);
if (verb && n == 0) {
fprintf(verbo,"No of test patches = %d\n",cg[n].npat);
}
/* Allocate arrays to hold test patch input and output values */
if ((cg[n].pat = (pval *)malloc(sizeof(pval) * cg[n].npat)) == NULL)
error("Malloc failed - pat[]");
/* Read in the CGATs fields */
if ((sidx = cgf->find_field(cgf, 0, "SAMPLE_ID")) < 0
&& (sidx = cgf->find_field(cgf, 0, "SampleName")) < 0
&& (sidx = cgf->find_field(cgf, 0, "Sample_Name")) < 0
&& (sidx = cgf->find_field(cgf, 0, "SAMPLE_NAME")) < 0
&& (sidx = cgf->find_field(cgf, 0, "SAMPLE_LOC")) < 0)
error("Input file '%s' doesn't contain field SAMPLE_ID, SampleName, Sample_Name, SAMPLE_NAME or SAMPLE_LOC",cg[n].name);
if (cgf->t[0].ftype[sidx] != nqcs_t
&& cgf->t[0].ftype[sidx] != cs_t)
error("Sample ID/Name field isn't a quoted or non quoted character string");
if (spec == 0) { /* Using instrument tristimulous value */
if (isLab) { /* Expect Lab */
if ((xix = cgf->find_field(cgf, 0, "LAB_L")) < 0)
error("Input file '%s' doesn't contain field LAB_L",cg[n].name);
if (cgf->t[0].ftype[xix] != r_t)
error("Field LAB_L is wrong type");
if ((yix = cgf->find_field(cgf, 0, "LAB_A")) < 0)
error("Input file '%s' doesn't contain field LAB_A",cg[n].name);
if (cgf->t[0].ftype[yix] != r_t)
error("Field LAB_A is wrong type");
if ((zix = cgf->find_field(cgf, 0, "LAB_B")) < 0)
error("Input file '%s' doesn't contain field LAB_B",cg[n].name);
if (cgf->t[0].ftype[zix] != r_t)
error("Field LAB_B is wrong type");
} else { /* Expect XYZ */
if ((xix = cgf->find_field(cgf, 0, "XYZ_X")) < 0)
error("Input file '%s' doesn't contain field XYZ_X",cg[n].name);
if (cgf->t[0].ftype[xix] != r_t)
error("Field XYZ_X is wrong type");
if ((yix = cgf->find_field(cgf, 0, "XYZ_Y")) < 0)
error("Input file '%s' doesn't contain field XYZ_Y",cg[n].name);
if (cgf->t[0].ftype[yix] != r_t)
error("Field XYZ_Y is wrong type");
if ((zix = cgf->find_field(cgf, 0, "XYZ_Z")) < 0)
error("Input file '%s' doesn't contain field XYZ_Z",cg[n].name);
if (cgf->t[0].ftype[zix] != r_t)
error("Field XYZ_Z is wrong type");
}
for (i = 0; i < cg[n].npat; i++) {
strcpy(cg[n].pat[i].sid, (char *)cgf->t[0].fdata[i][sidx]);
cg[n].pat[i].v[0] = *((double *)cgf->t[0].fdata[i][xix]);
cg[n].pat[i].v[1] = *((double *)cgf->t[0].fdata[i][yix]);
cg[n].pat[i].v[2] = *((double *)cgf->t[0].fdata[i][zix]);
if (!isLab) {
cg[n].pat[i].v[0] /= 100.0; /* Normalise XYZ to range 0.0 - 1.0 */
cg[n].pat[i].v[1] /= 100.0;
cg[n].pat[i].v[2] /= 100.0;
}
if (!isLab) { /* Convert test patch result XYZ to PCS (D50 Lab) */
icmXYZ2Lab(&icmD50, cg[n].pat[i].v, cg[n].pat[i].v);
}
}
} else { /* Using spectral data */
int ii;
xspect sp;
char buf[100];
int spi[XSPECT_MAX_BANDS]; /* CGATS indexes for each wavelength */
xsp2cie *sp2cie; /* Spectral conversion object */
if ((ii = cgf->find_kword(cgf, 0, "SPECTRAL_BANDS")) < 0)
error ("Input file doesn't contain keyword SPECTRAL_BANDS");
sp.spec_n = atoi(cgf->t[0].kdata[ii]);
if ((ii = cgf->find_kword(cgf, 0, "SPECTRAL_START_NM")) < 0)
error ("Input file doesn't contain keyword SPECTRAL_START_NM");
sp.spec_wl_short = atof(cgf->t[0].kdata[ii]);
if ((ii = cgf->find_kword(cgf, 0, "SPECTRAL_END_NM")) < 0)
error ("Input file doesn't contain keyword SPECTRAL_END_NM");
sp.spec_wl_long = atof(cgf->t[0].kdata[ii]);
sp.norm = 100.0;
/* Find the fields for spectral values */
for (j = 0; j < sp.spec_n; j++) {
int nm;
/* Compute nearest integer wavelength */
nm = (int)(sp.spec_wl_short + ((double)j/(sp.spec_n-1.0))
* (sp.spec_wl_long - sp.spec_wl_short) + 0.5);
sprintf(buf,"SPEC_%03d",nm);
if ((spi[j] = cgf->find_field(cgf, 0, buf)) < 0)
error("Input file doesn't contain field %s",buf);
}
/* Figure out what sort of device it is */
{
int ti;
if ((ti = cgf->find_kword(cgf, 0, "DEVICE_CLASS")) < 0)
error ("Input file '%s' doesn't contain keyword DEVICE_CLASS",cg[n].name);
if (strcmp(cgf->t[0].kdata[ti],"DISPLAY") == 0) {
illum = icxIT_none; /* Displays are assumed to be self luminous */
}
}
/* Create a spectral conversion object */
if ((sp2cie = new_xsp2cie(illum, illum == icxIT_none ? NULL : &cust_illum,
observ, NULL, icSigLabData)) == NULL)
error("Creation of spectral conversion object failed");
if (fwacomp) {
int ti;
xspect mwsp; /* Medium spectrum */
instType itype; /* Spectral instrument type */
xspect insp; /* Instrument illuminant */
mwsp = sp; /* Struct copy */
if ((ti = cgf->find_kword(cgf, 0, "TARGET_INSTRUMENT")) < 0)
error ("Can't find target instrument in '%s' needed for FWA compensation",cg[n].name);
if ((itype = inst_enum(cgf->t[0].kdata[ti])) == instUnknown)
error ("Unrecognised target instrument '%s'", cgf->t[0].kdata[ti]);
if (inst_illuminant(&insp, itype) != 0)
error ("Instrument doesn't have an FWA illuminent");
/* Determine a media white spectral reflectance */
for (j = 0; j < mwsp.spec_n; j++)
mwsp.spec[j] = 0.0;
/* Track the maximum reflectance for any band to determine white. */
/* This might silently fail, if there isn't white in the sampe set. */
for (i = 0; i < cg[0].npat; i++) {
for (j = 0; j < mwsp.spec_n; j++) {
double rv = *((double *)cgf->t[0].fdata[i][spi[j]]);
if (rv > mwsp.spec[j])
mwsp.spec[j] = rv;
}
}
if (sp2cie->set_fwa(sp2cie, &insp, &mwsp))
error ("Set FWA on sp2cie failed");
}
for (i = 0; i < cg[0].npat; i++) {
strcpy(cg[n].pat[i].sid, (char *)cgf->t[0].fdata[i][sidx]);
/* Read the spectral values for this patch */
for (j = 0; j < sp.spec_n; j++) {
sp.spec[j] = *((double *)cgf->t[0].fdata[i][spi[j]]);
}
/* Convert it to CIE space */
sp2cie->convert(sp2cie, cg[n].pat[i].v, &sp);
}
sp2cie->del(sp2cie); /* Done with this */
} /* End of reading in CGATs file */
cgf->del(cgf); /* Clean up */
}
/* Check that the number of test patches matches */
if (cg[0].npat != cg[1].npat)
error("Number of patches between '%s' and '%s' doesn't match",cg[0].name,cg[1].name);
/* Create a list to map the second list (measured) of patches to the first (target) */
if ((match = (int *)malloc(sizeof(int) * cg[0].npat)) == NULL)
error("Malloc failed - match[]");
for (i = 0; i < cg[0].npat; i++) {
for (j = 0; j < cg[1].npat; j++) {
if (strcmp(cg[0].pat[i].sid, cg[1].pat[j].sid) == 0)
break; /* Found it */
}
if (j < cg[1].npat) {
match[i] = j;
} else {
error("Failed to find matching patch to '%s'",cg[0].pat[i].sid);
}
}
/* Try and figure out which is the white patch */
{
double hL = -1.0;
for (i = 0; i < cg[0].npat; i++) {
if (cg[0].pat[i].v[0] > hL) {
hL = cg[0].pat[i].v[0];
whitepatch = i;
}
}
}
/* If we are aiming for a white point relative match, adjust the */
/* measured and target values to have a D50 white point */
if (dorel) {
for (n = 0; n < 2; n++) {
int wpix; /* White patch index */
double wp_xyz[3];
icmXYZNumber wp; /* White value */
double mat[3][3]; /* Chromatic transform */
if (n == 0)
wpix = whitepatch;
else
wpix = match[whitepatch];
/* Compute a chromatic correction matrix */
icmLab2XYZ(&icmD50, wp_xyz, cg[n].pat[wpix].v);
icmAry2XYZ(wp, wp_xyz);
icmChromAdaptMatrix(ICM_CAM_BRADFORD, icmD50, wp, mat);
for (i = 0; i < cg[n].npat; i++) {
icmLab2XYZ(&icmD50, cg[n].pat[i].v, cg[n].pat[i].v);
icmMulBy3x3(cg[n].pat[i].v, mat, cg[n].pat[i].v);
icmXYZ2Lab(&icmD50, cg[n].pat[i].v, cg[n].pat[i].v);
//printf("Table %d, patch %d, Lab %f %f %f\n",n,i,cg[n].pat[i].v[0],cg[n].pat[i].v[1],cg[n].pat[i].v[2]);
}
}
}
/* Compute the delta E's just for information */
for (i = 0; i < cg[0].npat; i++) {
double de = icmLabDE(cg[0].pat[i].v, cg[1].pat[match[i]].v);
cg[0].pat[i].de = de;
if (de > merr)
merr = de;
aerr += de;
}
if (cg[0].npat > 0)
aerr /= (double)cg[0].npat;
if (verb) {
fprintf(verbo,"No of correction patches = %d\n",cg[0].npat);
fprintf(verbo,"Average dE = %f, Maximum dE = %f\n",aerr,merr);
fprintf(verbo,"White patch assumed to be patch %s\n",cg[0].pat[whitepatch].sid);
}
/* ======================= */
/* Possible limiting gamut */
if (nogamut == 0) {
icmFile *dev_fp;
icc *dev_icc;
xicc *dev_xicc;
icxLuBase *dev_luo;
icxInk ink; /* Ink parameters */
/* Open up the device ICC profile, so that we can create a gamut */
/* and get an absolute PCS->device conversion */
if ((dev_fp = new_icmFileStd_name(dev_name,"r")) == NULL)
error ("Can't open file '%s'",dev_name);
if ((dev_icc = new_icc()) == NULL)
error("Creation of ICC object failed");
/* Read header etc. */
if ((rv = dev_icc->read(dev_icc,dev_fp,0)) != 0)
error("Reading profile '%s' failed: %d, %s",dev_name,rv,dev_icc->err);
/* Check that the profile is appropriate */
if (dev_icc->header->deviceClass != icSigInputClass
&& dev_icc->header->deviceClass != icSigDisplayClass
&& dev_icc->header->deviceClass != icSigOutputClass)
error("Device Profile '%s' isn't a device profile",dev_name);
ink.tlimit = -1.0; /* No ink limit by default */
ink.klimit = -1.0;
/* Wrap with an expanded icc */
if ((dev_xicc = new_xicc(dev_icc)) == NULL)
error ("Creation of xicc failed");
/* Use a heuristic to guess the ink limit */
icxGetLimits(dev_xicc, &ink.tlimit, &ink.klimit);
ink.tlimit += 0.05; /* allow a slight margine */
if (verb)
printf("Estimated Total inklimit is %f%%, Black %f%% \n",100.0 * ink.tlimit,ink.klimit < 0.0 ? 100.0 : 100.0 * ink.klimit);
/* Get a expanded color conversion object suitable for gamut */
if ((dev_luo = dev_xicc->get_luobj(dev_xicc, ICX_CLIP_NEAREST, icmFwd,
dorel ? icRelativeColorimetric : icAbsoluteColorimetric,
icSigLabData, icmLuOrdNorm, NULL, &ink)) == NULL)
error ("%d, %s",dev_xicc->errc, dev_xicc->err);
/* Creat a gamut surface */
if ((cb.dev_gam = dev_luo->get_gamut(dev_luo, GAMRES)) == NULL)
error ("%d, %s",dev_xicc->errc, dev_xicc->err);
dev_luo->del(dev_luo);
dev_xicc->del(dev_xicc);
dev_icc->del(dev_icc);
dev_fp->del(dev_fp);
} else {
cb.dev_gam = NULL;
}
/* ======================= */
/* Open up the existing abstract profile that is to be refined. */
if (docreate == 0) {
if ((rd_fp = new_icmFileStd_name(rd_name,"r")) == NULL)
error ("Can't open file '%s'",rd_name);
if ((rd_icc = new_icc()) == NULL)
error ("Creation of ICC object failed");
/* Read header etc. */
if ((rv = rd_icc->read(rd_icc,rd_fp,0)) != 0)
error ("%d, %s",rv,rd_icc->err);
if (rd_icc->header->deviceClass != icSigAbstractClass)
error("Input Profile '%s' isn't abstract type",rd_name);
if ((cb.rd_luo = rd_icc->get_luobj(rd_icc, icmFwd,
dorel ? icRelativeColorimetric : icAbsoluteColorimetric,
icSigLabData, icmLuOrdNorm)) == NULL)
error ("%d, %s",rd_icc->errc, rd_icc->err);
} else {
cb.rd_luo = NULL;
}
/* ======================= */
/* Create refining rspl */
{
cow *rp; /* rspl setup points */
int npnts = 0; /* Total number of test points */
int gres[MXDI]; /* rspl grid resolution */
double damp;
datai mn, mx;
if ((rp = (cow *)malloc(sizeof(cow) * cg[0].npat)) == NULL)
error("Malloc failed - rp[]");
/* Create mapping points */
for (i = 0; i < cg[0].npat; i++) {
double temp[3];
double ccor[3], cmag; /* Current correction vector */
double ncor[3], nmag; /* New correction vector */
/* Input is target [0] */
for (j = 0; j < 3; j++)
rp[i].p[j] = cg[0].pat[i].v[j];
/* Cull out of range points */
if (rp[i].p[0] < 0.0 || rp[i].p[0] > 100.0
|| rp[i].p[1] < -127.0 || rp[i].p[1] > 127.0
|| rp[i].p[2] < -127.0 || rp[i].p[2] > 127.0) {
#ifdef DEBUG1
printf("Ignoring %f %f %f\n",rp[i].p[0],rp[i].p[1],rp[i].p[2]);
#endif
continue;
}
#ifdef DEBUG1
printf("%d: Target %f %f %f\n",i,rp[i].p[0],rp[i].p[1],rp[i].p[2]);
#endif
damp = cb.rd_luo != NULL ? damp2 : damp1;
ccor[0] = ccor[1] = ccor[2] = 0.0;
cmag = 0.0;
/* Lookup the current correction applied to the target */
if (cb.rd_luo != NULL) { /* Subsequent pass */
double corval[3];
cb.rd_luo->lookup(cb.rd_luo, corval, cg[0].pat[i].v);
icmSub3(ccor, corval, cg[0].pat[i].v);
cmag = icmNorm3(ccor);
#ifdef DEBUG1
printf("%d: ccor %f %f %f, mag %f\n",i, ccor[0],ccor[1],ccor[2],cmag);
#endif
}
/* Create a trial 100% full correction point */
for (j = 0; j < 3; j++)
rp[i].v[j] = ccor[j] + 2.0 * cg[0].pat[i].v[j] - cg[1].pat[match[i]].v[j];
/* If a first pass and the target or the correction are out of gamut, */
/* use a damping factor of 1.0 */
if (cb.rd_luo == NULL
&& cb.dev_gam != NULL
&& cb.dev_gam->nradial(cb.dev_gam, temp, rp[i].p) > 1.0
&& cb.dev_gam->nradial(cb.dev_gam, temp, rp[i].v) > 1.0) {
damp = 1.0;
}
#ifdef DEBUG1
printf("%d: damp = %f\n",i, damp);
#endif
/* Create a new correction that does a damped correction to the current error */
/* [0] = target, [1] = measured */
for (j = 0; j < 3; j++)
ncor[j] = ccor[j] + damp * (cg[0].pat[i].v[j] - cg[1].pat[match[i]].v[j]);
nmag = icmNorm3(ncor);
#ifdef DEBUG1
printf("%d: ncor %f %f %f, mag %f\n",i, ncor[0],ncor[1],ncor[2],nmag);
#endif
/* If this is not the first pass, limit the new correction */
/* to be 1 + damp as big as the previous correction */
if (cb.rd_luo != NULL) {
if ((nmag/cmag) > (1.0 + damp2)) {
#ifdef DEBUG1
printf("%d: Limited cor mag from %f to %f\n",i, nmag, (1.0 + damp2) * cmag);
#endif
icmScale3(ncor, ncor, (1.0 + damp2) * cmag/nmag);
}
}
/* Create correction point */
for (j = 0; j < 3; j++)
rp[i].v[j] = cg[0].pat[i].v[j] + ncor[j];
/* If the target point or corrected point is likely to be outside */
/* the gamut, limit the magnitude of the correction to be the same */
/* as the previous correction. */
if (cb.rd_luo != NULL && cb.dev_gam != NULL) {
if (cb.dev_gam->nradial(cb.dev_gam, temp, rp[i].p) > 1.0
|| cb.dev_gam->nradial(cb.dev_gam, temp, rp[i].v) > 1.0) {
#ifdef DEBUG1
printf("%d: Limited cor mag from %f to %f\n",i, nmag, cmag);
#endif
icmScale3(ncor, ncor, cmag/nmag);
}
/* Create correction point again */
for (j = 0; j < 3; j++)
rp[i].v[j] = cg[0].pat[i].v[j] + ncor[j];
}
#ifdef DEBUG1
printf("%d: Was %f %f %f\n",i, cg[1].pat[match[i]].v[0], cg[1].pat[match[i]].v[1], cg[1].pat[match[i]].v[2]);
printf("%d: Correction to %f %f %f\n",i, rp[i].v[0], rp[i].v[1], rp[i].v[2]);
#endif
#ifdef COMPLOOKUP
/* Remove current correction from new change */
for (j = 0; j < 3; j++)
rp[i].v[j] -= ccor[j];
#endif
/* Set weighting */
if (i == whitepatch)
rp[i].w = WHITEWEIGHT;
else
rp[i].w = 1.0;
npnts++;
#ifdef DEBUG3
{
char fname[50], tmp[50];
FILE *lf;
int mi = match[i];
double tig, cig, rig;
double vv[3], temp[3];
double del[3], delt;
double corrdel[3], corrdelt;
double pcval[3], pcorrdel[3], pcorrdelt;
for (j = 0;; j++) {
if (poi[j] == (i+1) || poi[j] < 0)
break;
}
if (poi[j] < 0) {
continue;
}
#ifdef COMPLOOKUP
/* Compute total correction point */
for (j = 0; j < 3; j++)
vv[j] = rp[i].v[j] + ccor[j];
#else
for (j = 0; j < 3; j++)
vv[j] = rp[i].v[j];
#endif
sprintf(fname,"patch%04d.log",i+1);
if ((lf = fopen(fname, "a")) == NULL)
error("Unable to open debug3 log file '%s'\n",fname);
cig = cb.dev_gam->nradial(cb.dev_gam, temp, cg[1].pat[mi].v) - 1.0;
if (cig > 0.0)
sprintf(tmp, " OUT %f",cig);
else
sprintf(tmp, "");
fprintf(lf,"Currently %f %f %f%s\n", cg[1].pat[mi].v[0], cg[1].pat[mi].v[1], cg[1].pat[mi].v[2], tmp);
tig = cb.dev_gam->nradial(cb.dev_gam, temp, cg[0].pat[i].v) - 1.0;
if (tig > 0.0)
sprintf(tmp, " OUT %f",tig);
else
sprintf(tmp, "");
fprintf(lf,"Target %f %f %f%s\n", cg[0].pat[i].v[0], cg[0].pat[i].v[1], cg[0].pat[i].v[2], tmp);
icmSub3(del, cg[1].pat[mi].v, cg[0].pat[i].v);
delt = icmNorm3(del);
fprintf(lf,"DE %f %f %f (%f)\n", del[0], del[1], del[2], delt);
rig = cb.dev_gam->nradial(cb.dev_gam, temp, vv) - 1.0;
if (rig > 0.0)
sprintf(tmp, " OUT %f",rig);
else
sprintf(tmp, "");
fprintf(lf,"Correction %f %f %f%s\n", vv[0], vv[1], vv[2], tmp);
icmSub3(corrdel, vv, cg[0].pat[i].v);
corrdelt = icmNorm3(corrdel);
fprintf(lf,"CorrDelta %f %f %f (%f)\n", corrdel[0], corrdel[1], corrdel[2], corrdelt);
/* Note the previous correction we're compunded with */
if (cb.rd_luo != NULL) {
cb.rd_luo->lookup(cb.rd_luo, pcval, cg[0].pat[i].v);
icmSub3(pcorrdel, pcval, cg[0].pat[i].v);
pcorrdelt = icmNorm3(pcorrdel);
fprintf(lf,"PrevCorrDelta %f %f %f (%f)\n", pcorrdel[0], pcorrdel[1], pcorrdel[2], pcorrdelt);
}
fprintf(lf,"\n");
fclose(lf);
}
#endif /* DEBUG3 */
}
/* Create refining rspl */
mn[0] = 0.0, mn[1] = mn[2] = -128.0; /* Allow for 16 bit grid range */
mx[0] = 100.0, mx[1] = mx[2] = (65535.0 * 255.0)/65280.0 - 128.0;
cb.verb = verb;
if ((cb.r = new_rspl(RSPL_NOFLAGS, 3, 3)) == NULL)
error("new_rspl failed");
for (e = 0; e < 3; e++)
gres[e] = clutres;
for (e = 0; e < 3; e++)
avgdev[e] = AVGDEV;
cb.r->fit_rspl_w_df(cb.r,
RSPLFLAGS /* Extra flags */
| verb ? RSPL_VERBOSE : 0,
rp, /* Test points */
npnts, /* Number of test points */
mn, mx, gres, /* Low, high, resolution of grid */
NULL, NULL, /* Default data scale */
smoothf, /* Smoothing */
avgdev, /* Average Deviation */
NULL, /* Grid width */
wweight, /* weak default function weight */
NULL, /* No context */
wfunc /* Weak function */
);
if (verb) printf("\n");
/* Report how good the fit is */
if (verb) {
co tco; /* Test point */
double maxe = -1e6, avge = 0.0;
for (i = 0; i < npnts; i++) {
double de;
icmAry2Ary(tco.p, rp[i].p);
cb.r->interp(cb.r, &tco);
de = icmLabDE(tco.v, rp[i].v);
if (de > maxe)
maxe = de;
avge += de;
}
avge /= (double)npnts;
printf("Refining transform has error to defining points avg: %f, max %f\n",avge,maxe);
}
free(rp);
}
/* ======================= */
/* Create new abstract ICC profile */
if ((wr_fp = new_icmFileStd_name(wr_name,"w")) == NULL)
error ("Can't open file '%s' for writing",wr_name);
if ((wr_icc = new_icc()) == NULL)
error ("Creation of write ICC object failed");
/* Add all the tags required */
/* The header: */
{
icmHeader *wh = wr_icc->header;
/* Values that must be set before writing */
wh->deviceClass = icSigAbstractClass;
wh->colorSpace = icSigLabData;
wh->pcs = icSigLabData;
if (dorel)
wh->renderingIntent = icRelativeColorimetric; /* White point relative */
else
wh->renderingIntent = icAbsoluteColorimetric; /* Instrument reading based */
}
/* Profile Description Tag: */
{
icmTextDescription *wo;
char *dst = "Argyll refine output";
if ((wo = (icmTextDescription *)wr_icc->add_tag(
wr_icc, icSigProfileDescriptionTag, icSigTextDescriptionType)) == NULL)
error("add_tag failed: %d, %s",wr_icc->errc,wr_icc->err);
wo->size = strlen(dst)+1; /* Allocated and used size of desc, inc null */
wo->allocate((icmBase *)wo);/* Allocate space */
strcpy(wo->desc, dst); /* Copy the string in */
}
/* Copyright Tag: */
{
icmText *wo;
char *crt = "Copyright the user who created it";
if ((wo = (icmText *)wr_icc->add_tag(
wr_icc, icSigCopyrightTag, icSigTextType)) == NULL)
error("add_tag failed: %d, %s",wr_icc->errc,wr_icc->err);
wo->size = strlen(crt)+1; /* Allocated and used size of text, inc null */
wo->allocate((icmBase *)wo);/* Allocate space */
strcpy(wo->data, crt); /* Copy the text in */
}
/* White Point Tag: */
{
icmXYZArray *wo;
/* Note that tag types icSigXYZType and icSigXYZArrayType are identical */
if ((wo = (icmXYZArray *)wr_icc->add_tag(
wr_icc, icSigMediaWhitePointTag, icSigXYZArrayType)) == NULL)
error("add_tag failed: %d, %s",wr_icc->errc,wr_icc->err);
wo->size = 1;
wo->allocate((icmBase *)wo); /* Allocate space */
wo->data[0] = icmD50; /* So absolute/relative rendering is the same */
}
/* 16 bit pcs -> pcs lut: */
{
icmLut *wo;
int flags = ICM_CLUT_SET_EXACT; /* Assume we're setting from RSPL's */
/* Intent 0 = default/perceptual */
if ((wo = (icmLut *)wr_icc->add_tag(
wr_icc, icSigAToB0Tag, icSigLut16Type)) == NULL)
error("add_tag failed: %d, %s",wr_icc->errc,wr_icc->err);
wo->inputChan = 3;
wo->outputChan = 3;
wo->clutPoints = clutres;
wo->inputEnt = 256; /* Not actually used */
wo->outputEnt = 256;
wo->allocate((icmBase *)wo);/* Allocate space */
/* The matrix is only applicable to XYZ input space, */
/* so it is not used here. */
/* Use helper function to do the hard work. */
if (cb.verb) {
int extra;
for (cb.total = 1, i = 0; i < 3; i++, cb.total *= wo->clutPoints)
;
/* Add in cell center points */
for (extra = 1, i = 0; i < wo->inputChan; i++, extra *= (wo->clutPoints-1))
;
cb.total += extra;
cb.count = 0;
cb.last = -1;
printf(" 0%%"), fflush(stdout);
}
#ifdef COMPLOOKUP
/* Compound with previous correction */
if (cb.rd_luo != NULL)
flags = ICM_CLUT_SET_APXLS; /* Won't be least squares, so do extra sampling */
#endif
if (wo->set_tables(wo,
flags,
&cb,
icSigLabData, /* Input color space */
icSigLabData, /* Output color space */
NULL, /* Linear input transform Lab->Lab' (NULL = default) */
NULL, NULL, /* Use default Maximum range of Lab' values */
PCSp_PCSp, /* Lab' -> Lab' transfer function */
NULL, NULL, /* Use default Maximum range of Lab' values */
NULL /* Linear output transform Lab'->Lab */
) != 0)
error("Setting 16 bit Lab->Lab Lut failed: %d, %s",wr_icc->errc,wr_icc->err);
if (verb)
printf("\n");
#ifdef WARN_CLUT_CLIPPING
if (wr_icc->warnc)
warning("Values clipped in setting abstract LUT");
#endif /* WARN_CLUT_CLIPPING */
if (verb)
printf("Done filling abstract table\n");
}
/* Write the file out */
if ((rv = wr_icc->write(wr_icc,wr_fp,0)) != 0)
error ("Write file: %d, %s",rv,wr_icc->err);
/* ======================================= */
/* Clean everything up */
wr_icc->del(wr_icc);
wr_fp->del(wr_fp);
if (docreate == 0) {
cb.rd_luo->del(cb.rd_luo);
rd_icc->del(rd_icc);
rd_fp->del(rd_fp);
}
if (nogamut == 0) {
cb.dev_gam->del(cb.dev_gam);
}
cb.r->del(cb.r);
free(match);
free(cg[0].pat);
free(cg[1].pat);
return 0;
}
int main(int argc, char *argv[])
{
int i;
int fa,nfa; /* current argument we're looking at */
int verb = 0;
int limit = -1;
static char tarname[200] = { 0 }; /* optional 928 patch reference file */
static char inname[200] = { 0 }; /* Input .pat file base name */
static char outname[200] = { 0 }; /* Output cgats .ti3 file base name */
FILE *d928_fp = NULL;
FILE *pat_fp;
cgats *ocg; /* output cgats structure */
time_t clk = time(0);
struct tm *tsp = localtime(&clk);
char *atm = asctime(tsp); /* Ascii time */
error_program = "kodak2ti3";
if (argc <= 1)
usage();
/* Process the arguments */
for(fa = 1;fa < argc;fa++)
{
nfa = fa; /* skip to nfa if next argument is used */
if (argv[fa][0] == '-') /* Look for any flags */
{
char *na = NULL; /* next argument after flag, null if none */
if (argv[fa][2] != '\000')
na = &argv[fa][2]; /* next is directly after flag */
else
{
if ((fa+1) < argc)
{
if (argv[fa+1][0] != '-')
{
nfa = fa + 1;
na = argv[nfa]; /* next is seperate non-flag argument */
}
}
}
if (argv[fa][1] == '?')
usage();
else if (argv[fa][1] == 'l') {
if (na == NULL) usage();
fa = nfa;
limit = atoi(na);
if (limit < 1)
limit = 1;
}
else if (argv[fa][1] == 'r') {
if (na == NULL) usage();
fa = nfa;
strcpy(tarname, na);
}
else if (argv[fa][1] == 'v')
verb = 1;
else
usage();
}
else
break;
}
/* Get the file name argument */
if (fa >= argc || argv[fa][0] == '-') usage();
strcpy(inname,argv[fa++]);
strcat(inname,".pat");
if (fa >= argc || argv[fa][0] == '-') usage();
strcpy(outname, argv[fa++]);
strcat(outname,".ti3");
/* Open up the Test chart reference file if we were given one */
if (tarname[0] != '\000') {
if (verb)
printf("Using alternate reference file '%s'\n",tarname);
if ((d928_fp = open_928(tarname)) == NULL)
error ("Read: Can't open file '%s'",tarname);
}
if ((pat_fp = open_pat(inname)) == NULL)
error ("Read: Can't open file '%s'",inname);
/* Setup output cgats file */
ocg = new_cgats(); /* Create a CGATS structure */
ocg->add_other(ocg, "CTI3"); /* our special type is Calibration Target Information 3 */
ocg->add_table(ocg, tt_other, 0); /* Start the first table */
ocg->add_kword(ocg, 0, "DESCRIPTOR", "Argyll Calibration Target chart information 3",NULL);
ocg->add_kword(ocg, 0, "ORIGINATOR", "Argyll target", NULL);
atm[strlen(atm)-1] = '\000'; /* Remove \n from end */
ocg->add_kword(ocg, 0, "CREATED",atm, NULL);
ocg->add_kword(ocg, 0, "DEVICE_CLASS","OUTPUT", NULL); /* What sort of device this is */
/* Fields we want */
ocg->add_field(ocg, 0, "SAMPLE_ID", nqcs_t);
if (limit > 0) {
char buf[100];
sprintf(buf, "%d", limit);
ocg->add_kword(ocg, 0, "TOTAL_INK_LIMIT", buf, NULL);
}
ocg->add_field(ocg, 0, "CMYK_C", r_t);
ocg->add_field(ocg, 0, "CMYK_M", r_t);
ocg->add_field(ocg, 0, "CMYK_Y", r_t);
ocg->add_field(ocg, 0, "CMYK_K", r_t);
ocg->add_kword(ocg, 0, "COLOR_REP","CMYK_LAB", NULL);
ocg->add_field(ocg, 0, "LAB_L", r_t);
ocg->add_field(ocg, 0, "LAB_A", r_t);
ocg->add_field(ocg, 0, "LAB_B", r_t);
/* Write out the patch info to the output CGATS file */
for (i = 0; i < NPAT; i++) {
char id[100];
double cmykv[4];
double labv[3];
if (next_928(d928_fp, i, cmykv) != 0)
error("Error reading reference information from '%s' file",tarname);
if (next_pat(pat_fp, labv) != 0)
error("Error reading Kodak .pat file");
sprintf(id, "%d", i+1);
ocg->add_set(ocg, 0, id, 100.0 * cmykv[0], 100.0 * cmykv[1],
100.0 * cmykv[2], 100.0 * cmykv[3],
labv[0], labv[1], labv[2]);
}
{
double wp[3]; /* Paper white XYZ */
double D50wp[3] /* D50 white point Kodak uses */
= { 0.9642, 1.0000, 0.8249 };
double tt[3];
int li;
/* Get offset of Lab values in cgats file */
if ((li = ocg->find_field(ocg, 0, "LAB_L")) < 0)
error("Internal - cgats doesn't field LAB_L");
/* Get last line of pat file - this is the paper white in XYZ */
if (next_pat(pat_fp, wp) != 0)
error("Error reading Kodak .pat file");
//printf("~1 white point is XYZ %f %f %f\n",wp[0],wp[1],wp[2]);
/* Run through all the data points, and adjust them back to the absolute */
/* white point. */
for (i = 0; i < NPAT; i++) {
double in[3], out[3];
tt[0] = *((double *)ocg->t[0].fdata[i][li+0]);
tt[1] = *((double *)ocg->t[0].fdata[i][li+1]);
tt[2] = *((double *)ocg->t[0].fdata[i][li+2]);
icmLab2XYZ(&icmD50, in, tt);
/* Undo Kodak's D50->paper white point adjustment */
out[0] = in[0] * (D50wp[1] * wp[0])/(D50wp[0] * wp[1]);
out[1] = in[1]; /* Y remains unchanged */
out[2] = in[2] * (D50wp[1] * wp[2])/(D50wp[2] * wp[1]);
icmXYZ2Lab(&icmD50, tt, out);
*((double *)ocg->t[0].fdata[i][li+0]) = tt[0];
*((double *)ocg->t[0].fdata[i][li+1]) = tt[1];
*((double *)ocg->t[0].fdata[i][li+2]) = tt[2];
}
}
if (ocg->write_name(ocg, outname))
error("Write error : %s",ocg->err);
ocg->del(ocg); /* Clean up */
if (d928_fp != NULL)
close_928(d928_fp);
close_pat(pat_fp);
return 0;
}
int
main(int argc, char *argv[]) {
int fa,nfa; /* argument we're looking at */
char prof_name[MAXNAMEL+1] = { '\000' }; /* ICC profile name, "" if none */
char in_name[MAXNAMEL+1]; /* TIFF input file */
char *xl = NULL, out_name[MAXNAMEL+4+1] = "locus.ts"; /* locus output file */
int verb = 0;
int dovrml = 0;
int doaxes = 1;
int usevec = 0;
double vec[3];
int rv = 0;
icc *icco = NULL;
xicc *xicco = NULL;
icxViewCond vc; /* Viewing Condition for CIECAM */
int vc_e = -1; /* Enumerated viewing condition */
int vc_s = -1; /* Surround override */
double vc_wXYZ[3] = {-1.0, -1.0, -1.0}; /* Adapted white override in XYZ */
double vc_wxy[2] = {-1.0, -1.0}; /* Adapted white override in x,y */
double vc_a = -1.0; /* Adapted luminance */
double vc_b = -1.0; /* Background % overid */
double vc_f = -1.0; /* Flare % overid */
double vc_fXYZ[3] = {-1.0, -1.0, -1.0}; /* Flare color override in XYZ */
double vc_fxy[2] = {-1.0, -1.0}; /* Flare color override in x,y */
icxLuBase *luo = NULL; /* Generic lookup object */
icColorSpaceSignature ins = icSigLabData, outs; /* Type of input and output spaces */
int inn, outn; /* Number of components */
icmLuAlgType alg; /* Type of lookup algorithm */
icmLookupFunc func = icmFwd; /* Must be */
icRenderingIntent intent = -1; /* Default */
icColorSpaceSignature pcsor = icSigLabData; /* Default */
icmLookupOrder order = icmLuOrdNorm; /* Default */
TIFF *rh = NULL;
int x, y, width, height; /* Size of image */
uint16 samplesperpixel, bitspersample;
uint16 pconfig, photometric, pmtc;
uint16 resunits;
float resx, resy;
tdata_t *inbuf;
void (*cvt)(double *out, double *in); /* TIFF conversion function, NULL if none */
icColorSpaceSignature tcs; /* TIFF colorspace */
uint16 extrasamples; /* Extra "alpha" samples */
uint16 *extrainfo; /* Info about extra samples */
int sign_mask; /* Handling of encoding sign */
int i, j;
int nipoints = 0; /* Number of raster sample points */
co *inp = NULL; /* Input point values */
double tdel = 0.0; /* Total delta along locus */
rspl *rr = NULL;
int nopoints = 0; /* Number of raster sample points */
co *outp = NULL;
error_program = argv[0];
if (argc < 2)
usage();
/* Process the arguments */
for(fa = 1;fa < argc;fa++) {
nfa = fa; /* skip to nfa if next argument is used */
if (argv[fa][0] == '-') { /* Look for any flags */
char *na = NULL; /* next argument after flag, null if none */
if (argv[fa][2] != '\000')
na = &argv[fa][2]; /* next is directly after flag */
else {
if ((fa+1) < argc) {
if (argv[fa+1][0] != '-') {
nfa = fa + 1;
na = argv[nfa]; /* next is seperate non-flag argument */
}
}
}
if (argv[fa][1] == '?')
usage();
/* Verbosity */
else if (argv[fa][1] == 'v') {
verb = 1;
}
/* Intent */
else if (argv[fa][1] == 'i' || argv[fa][1] == 'I') {
fa = nfa;
if (na == NULL) usage();
switch (na[0]) {
case 'd':
intent = icmDefaultIntent;
break;
case 'a':
intent = icAbsoluteColorimetric;
break;
case 'p':
intent = icPerceptual;
break;
case 'r':
intent = icRelativeColorimetric;
break;
case 's':
intent = icSaturation;
break;
/* Argyll special intents to check spaces underlying */
/* icxPerceptualAppearance & icxSaturationAppearance */
case 'P':
intent = icmAbsolutePerceptual;
break;
case 'S':
intent = icmAbsoluteSaturation;
break;
default:
usage();
}
}
/* Search order */
else if (argv[fa][1] == 'o') {
fa = nfa;
if (na == NULL) usage();
switch (na[0]) {
case 'n':
case 'N':
order = icmLuOrdNorm;
break;
case 'r':
case 'R':
order = icmLuOrdRev;
break;
default:
usage();
}
}
/* PCS override */
else if (argv[fa][1] == 'p' || argv[fa][1] == 'P') {
fa = nfa;
if (na == NULL) usage();
switch (na[0]) {
case 'l':
pcsor = icSigLabData;
break;
case 'j':
pcsor = icxSigJabData;
break;
default:
usage();
}
}
/* Viewing conditions */
else if (argv[fa][1] == 'c' || argv[fa][1] == 'C') {
fa = nfa;
if (na == NULL) usage();
/* Switch to Jab automatically */
pcsor = icxSigJabData;
/* Set the viewing conditions */
if (na[1] != ':') {
if ((vc_e = xicc_enum_viewcond(NULL, NULL, -2, na, 1, NULL)) == -999)
usage();
} else if (na[0] == 's' || na[0] == 'S') {
if (na[1] != ':')
usage();
if (na[2] == 'a' || na[2] == 'A') {
vc_s = vc_average;
} else if (na[2] == 'm' || na[2] == 'M') {
vc_s = vc_dim;
} else if (na[2] == 'd' || na[2] == 'D') {
vc_s = vc_dark;
} else if (na[2] == 'c' || na[2] == 'C') {
vc_s = vc_cut_sheet;
} else
usage();
} else if (na[0] == 'w' || na[0] == 'W') {
double x, y, z;
if (sscanf(na+1,":%lf:%lf:%lf",&x,&y,&z) == 3) {
vc_wXYZ[0] = x; vc_wXYZ[1] = y; vc_wXYZ[2] = z;
} else if (sscanf(na+1,":%lf:%lf",&x,&y) == 2) {
vc_wxy[0] = x; vc_wxy[1] = y;
} else
usage();
} else if (na[0] == 'a' || na[0] == 'A') {
if (na[1] != ':')
usage();
vc_a = atof(na+2);
} else if (na[0] == 'b' || na[0] == 'B') {
if (na[1] != ':')
usage();
vc_b = atof(na+2);
} else if (na[0] == 'f' || na[0] == 'F') {
double x, y, z;
if (sscanf(na+1,":%lf:%lf:%lf",&x,&y,&z) == 3) {
vc_fXYZ[0] = x; vc_fXYZ[1] = y; vc_fXYZ[2] = z;
} else if (sscanf(na+1,":%lf:%lf",&x,&y) == 2) {
vc_fxy[0] = x; vc_fxy[1] = y;
} else if (sscanf(na+1,":%lf",&x) == 1) {
vc_f = x;
} else
usage();
} else
usage();
}
/* VRML output */
else if (argv[fa][1] == 'w' || argv[fa][1] == 'W') {
dovrml = 1;
}
/* No axis output */
else if (argv[fa][1] == 'n' || argv[fa][1] == 'N') {
doaxes = 0;
}
/* Vector direction for span */
else if (argv[fa][1] == 'V') {
usevec = 1;
if (na == NULL) usage();
fa = nfa;
if (sscanf(na, " %lf , %lf , %lf ",&vec[0], &vec[1], &vec[2]) != 3)
usage();
}
/* Output file name */
else if (argv[fa][1] == 'O') {
fa = nfa;
if (na == NULL) usage();
strncpy(out_name,na,MAXNAMEL); out_name[MAXNAMEL] = '\000';
}
else
usage();
} else
break;
}
if (fa >= argc || argv[fa][0] == '-') usage();
if (fa < (argc-1))
strncpy(prof_name,argv[fa++],MAXNAMEL); prof_name[MAXNAMEL] = '\000';
if (fa >= argc || argv[fa][0] == '-') usage();
strncpy(in_name,argv[fa],MAXNAMEL); in_name[MAXNAMEL] = '\000';
if ((xl = strrchr(out_name, '.')) == NULL) /* Figure where extention is */
xl = out_name + strlen(out_name);
if (verb) {
printf("Profile = '%s'\n",prof_name);
printf("Input TIFF = '%s'\n",in_name);
printf("Output file = '%s'\n",out_name);
}
if (intent == -1) {
if (pcsor == icxSigJabData)
intent = icRelativeColorimetric; /* Default to icxAppearance */
else
intent = icAbsoluteColorimetric; /* Default to icAbsoluteColorimetric */
}
/* - - - - - - - - - - - - - - - - */
/* If we were provided an ICC profile to use */
if (prof_name[0] != '\000') {
/* Open up the profile or TIFF embedded profile for reading */
if ((icco = read_embedded_icc(prof_name)) == NULL)
error ("Can't open profile in file '%s'",prof_name);
if (verb) {
icmFile *op;
if ((op = new_icmFileStd_fp(stdout)) == NULL)
error ("Can't open stdout");
icco->header->dump(icco->header, op, 1);
op->del(op);
}
/* Check that the profile is appropriate */
if (icco->header->deviceClass != icSigInputClass
&& icco->header->deviceClass != icSigDisplayClass
&& icco->header->deviceClass != icSigOutputClass
&& icco->header->deviceClass != icSigColorSpaceClass)
error("Profile type isn't device or colorspace");
/* Wrap with an expanded icc */
if ((xicco = new_xicc(icco)) == NULL)
error ("Creation of xicc failed");
/* Setup the default viewing conditions */
if (xicc_enum_viewcond(xicco, &vc, -1, NULL, 0, NULL) == -999)
error ("%d, %s",xicco->errc, xicco->err);
if (vc_e != -1)
if (xicc_enum_viewcond(xicco, &vc, vc_e, NULL, 0, NULL) == -999)
error ("%d, %s",xicco->errc, xicco->err);
if (vc_s >= 0)
vc.Ev = vc_s;
if (vc_wXYZ[1] > 0.0) {
/* Normalise it to current media white */
vc.Wxyz[0] = vc_wXYZ[0]/vc_wXYZ[1] * vc.Wxyz[1];
vc.Wxyz[2] = vc_wXYZ[2]/vc_wXYZ[1] * vc.Wxyz[1];
}
if (vc_wxy[0] >= 0.0) {
double x = vc_wxy[0];
double y = vc_wxy[1]; /* If Y == 1.0, then X+Y+Z = 1/y */
double z = 1.0 - x - y;
vc.Wxyz[0] = x/y * vc.Wxyz[1];
vc.Wxyz[2] = z/y * vc.Wxyz[1];
}
if (vc_a >= 0.0)
vc.La = vc_a;
if (vc_b >= 0.0)
vc.Yb = vc_b/100.0;
if (vc_f >= 0.0)
vc.Yf = vc_f/100.0;
if (vc_fXYZ[1] > 0.0) {
/* Normalise it to current media white */
vc.Fxyz[0] = vc_fXYZ[0]/vc_fXYZ[1] * vc.Fxyz[1];
vc.Fxyz[2] = vc_fXYZ[2]/vc_fXYZ[1] * vc.Fxyz[1];
}
if (vc_fxy[0] >= 0.0) {
double x = vc_fxy[0];
double y = vc_fxy[1]; /* If Y == 1.0, then X+Y+Z = 1/y */
double z = 1.0 - x - y;
vc.Fxyz[0] = x/y * vc.Fxyz[1];
vc.Fxyz[2] = z/y * vc.Fxyz[1];
}
/* Get a expanded color conversion object */
if ((luo = xicco->get_luobj(xicco, ICX_CLIP_NEAREST
, func, intent, pcsor, order, &vc, NULL)) == NULL)
error ("%d, %s",xicco->errc, xicco->err);
luo->spaces(luo, &ins, &inn, &outs, &outn, &alg, NULL, NULL, NULL);
}
/* Establish the PCS range if we are filtering */
{
double pcsmin[3], pcsmax[3]; /* PCS range for filter stats array */
if (luo) {
gamut *csgam;
if ((csgam = luo->get_gamut(luo, 20.0)) == NULL)
error("Getting the gamut of the source colorspace failed");
csgam->getrange(csgam, pcsmin, pcsmax);
csgam->del(csgam);
} else {
pcsmin[0] = 0.0;
pcsmax[0] = 100.0;
pcsmin[1] = -128.0;
pcsmax[1] = 128.0;
pcsmin[2] = -128.0;
pcsmax[2] = 128.0;
}
if (verb)
printf("PCS range = %f..%f, %f..%f. %f..%f\n\n", pcsmin[0], pcsmax[0], pcsmin[1], pcsmax[1], pcsmin[2], pcsmax[2]);
/* Allocate and initialize the filter */
set_fminmax(pcsmin, pcsmax);
}
/* - - - - - - - - - - - - - - - */
/* Open up input tiff file ready for reading */
/* Got arguments, so setup to process the file */
if ((rh = TIFFOpen(in_name, "r")) == NULL)
error("error opening read file '%s'",in_name);
TIFFGetField(rh, TIFFTAG_IMAGEWIDTH, &width);
TIFFGetField(rh, TIFFTAG_IMAGELENGTH, &height);
TIFFGetField(rh, TIFFTAG_SAMPLESPERPIXEL, &samplesperpixel);
TIFFGetField(rh, TIFFTAG_BITSPERSAMPLE, &bitspersample);
if (bitspersample != 8 && bitspersample != 16)
error("TIFF Input file must be 8 bit/channel");
TIFFGetFieldDefaulted(rh, TIFFTAG_EXTRASAMPLES, &extrasamples, &extrainfo);
TIFFGetField(rh, TIFFTAG_PHOTOMETRIC, &photometric);
if (inn != (samplesperpixel-extrasamples))
error ("TIFF Input file has %d input chanels mismatched to colorspace '%s'",
samplesperpixel, icm2str(icmColorSpaceSignature, ins));
if ((tcs = TiffPhotometric2ColorSpaceSignature(&cvt, &sign_mask, photometric,
bitspersample, samplesperpixel, extrasamples)) == 0)
error("Can't handle TIFF file photometric %s", Photometric2str(photometric));
if (tcs != ins) {
if (luo != NULL)
error("TIFF photometric '%s' doesn't match ICC input colorspace '%s' !",
Photometric2str(photometric), icm2str(icmColorSpaceSignature,ins));
else
error("No profile provided and TIFF photometric '%s' isn't Lab !",
Photometric2str(photometric));
}
TIFFGetField(rh, TIFFTAG_PLANARCONFIG, &pconfig);
if (pconfig != PLANARCONFIG_CONTIG)
error ("TIFF Input file must be planar");
TIFFGetField(rh, TIFFTAG_RESOLUTIONUNIT, &resunits);
TIFFGetField(rh, TIFFTAG_XRESOLUTION, &resx);
TIFFGetField(rh, TIFFTAG_YRESOLUTION, &resy);
if (verb) {
printf("Input TIFF file '%s'\n",in_name);
printf("TIFF file colorspace is %s\n",icm2str(icmColorSpaceSignature,tcs));
printf("TIFF file photometric is %s\n",Photometric2str(photometric));
printf("\n");
}
/* - - - - - - - - - - - - - - - */
/* Process colors to translate */
/* (Should fix this to process a group of lines at a time ?) */
nipoints = width * height;
// if ((inp = malloc(sizeof(co) * nipoints)) == NULL)
// error("Unable to allocate co array");
inbuf = _TIFFmalloc(TIFFScanlineSize(rh));
for (i = y = 0; y < height; y++) {
/* Read in the next line */
if (TIFFReadScanline(rh, inbuf, y, 0) < 0)
error ("Failed to read TIFF line %d",y);
/* Do floating point conversion */
for (x = 0; x < width; x++) {
int e;
double in[MAX_CHAN], out[MAX_CHAN];
if (bitspersample == 8) {
for (e = 0; e < samplesperpixel; e++) {
int v = ((unsigned char *)inbuf)[x * samplesperpixel + e];
if (sign_mask & (1 << i)) /* Treat input as signed */
v = (v & 0x80) ? v - 0x80 : v + 0x80;
in[e] = v/255.0;
}
} else {
for (e = 0; e < samplesperpixel; e++) {
int v = ((unsigned short *)inbuf)[x * samplesperpixel + e];
if (sign_mask & (1 << i)) /* Treat input as signed */
v = (v & 0x8000) ? v - 0x8000 : v + 0x8000;
in[e] = v/65535.0;
}
}
if (cvt != NULL) { /* Undo TIFF encoding */
cvt(in, in);
}
if (luo != NULL) {
if ((rv = luo->lookup(luo, out, in)) > 1)
error ("%d, %s",icco->errc,icco->err);
if (outs == icSigXYZData) /* Convert to Lab */
icmXYZ2Lab(&icco->header->illuminant, out, out);
} else {
for (e = 0; e < samplesperpixel; e++)
out[e] = in[e];
}
//printf("~1 %f %f %f -> %f %f %f\n", in[0], in[1], in[2], out[0], out[1], out[2]);
add_fpixel(out);
#ifdef NEVER
/* Store PCS value in array */
inp[i].v[0] = out[0];
inp[i].v[1] = out[1];
inp[i].v[2] = out[2];
i++;
#endif
}
}
_TIFFfree(inbuf);
TIFFClose(rh); /* Close Input file */
/* Done with lookup object */
if (luo != NULL) {
luo->del(luo);
xicco->del(xicco); /* Expansion wrapper */
icco->del(icco); /* Icc */
}
nipoints = flush_filter(verb, 80.0);
if ((inp = malloc(sizeof(co) * nipoints)) == NULL)
error("Unable to allocate co array");
get_filter(inp);
printf("~1 There are %d points\n",nipoints);
//for (i = 0; i < nipoints; i++)
//printf("~1 point %d = %f %f %f\n", i, inp[i].v[0], inp[i].v[1], inp[i].v[2]);
del_filter();
/* Create the locus */
{
double s0[3], s1[3];
double t0[3], t1[3];
double mm[3][4];
double im[3][4];
int gres[MXDI] = { 256 } ;
if (usevec) {
double max = -1e6;
double min = 1e6;
double dist;
icmScale3(vec, vec, 1.0/icmNorm3(vec));
/* Locate the two furthest distant points measured along the vector */
for (i = 0; i < nipoints; i++) {
double tt;
tt = icmDot3(vec, inp[i].v);
if (tt > max) {
max = tt;
icmAry2Ary(s1, inp[i].v);
}
if (tt < min) {
min = tt;
icmAry2Ary(s0, inp[i].v);
}
}
dist = icmNorm33sq(s0, s1);
printf("~1 most distant in vector %f %f %f = %f %f %f -> %f %f %f dist %f\n",
vec[0], vec[1], vec[2], s0[0], s0[1], s0[2], s1[0], s1[1], s1[2], sqrt(dist));
t0[0] = 0.0;
t0[1] = 0.0;
t0[2] = 0.0;
t1[0] = sqrt(dist);
t1[1] = 0.0;
t1[2] = 0.0;
} else {
double dist = 0.0;
/* Locate the two furthest distant points (brute force) */
for (i = 0; i < (nipoints-1); i++) {
for (j = i+1; j < nipoints; j++) {
double tt;
if ((tt = icmNorm33sq(inp[i].v, inp[j].v)) > dist) {
dist = tt;
icmAry2Ary(s0, inp[i].v);
icmAry2Ary(s1, inp[j].v);
}
}
}
printf("~1 most distant = %f %f %f -> %f %f %f dist %f\n",
s0[0], s0[1], s0[2], s1[0], s1[1], s1[2], sqrt(dist));
t0[0] = 0.0;
t0[1] = 0.0;
t0[2] = 0.0;
t1[0] = sqrt(dist);
t1[1] = 0.0;
t1[2] = 0.0;
}
/* Transform our direction vector to the L* axis, and create inverse too */
icmVecRotMat(mm, s1, s0, t1, t0);
icmVecRotMat(im, t1, t0, s1, s0);
/* Setup for rspl to create smoothed locus */
for (i = 0; i < nipoints; i++) {
icmMul3By3x4(inp[i].v, mm, inp[i].v);
inp[i].p[0] = inp[i].v[0];
inp[i].v[0] = inp[i].v[1];
inp[i].v[1] = inp[i].v[2];
//printf("~1 point %d = %f -> %f %f\n", i, inp[i].p[0], inp[i].v[0], inp[i].v[1]);
}
/* Create rspl */
if ((rr = new_rspl(RSPL_NOFLAGS, 1, 2)) == NULL)
error("Creating rspl failed");
rr->fit_rspl(rr, RSPL_NOFLAGS,inp, nipoints, NULL, NULL, gres, NULL, NULL, 5.0, NULL, NULL);
#ifdef DEBUG_PLOT
{
#define XRES 100
double xx[XRES];
double y1[XRES];
double y2[XRES];
for (i = 0; i < XRES; i++) {
co pp;
double x;
x = i/(double)(XRES-1);
xx[i] = x * (t1[0] - t0[0]);
pp.p[0] = xx[i];
rr->interp(rr, &pp);
y1[i] = pp.v[0];
y2[i] = pp.v[1];
}
do_plot(xx,y1,y2,NULL,XRES);
}
#endif /* DEBUG_PLOT */
free(inp);
nopoints = t1[0] / DE_SPACE;
if (nopoints < 2)
nopoints = 2;
/* Create the output points */
if ((outp = malloc(sizeof(co) * nopoints)) == NULL)
error("Unable to allocate co array");
/* Setup initial division of locus */
for (i = 0; i < nopoints; i++) {
double xx;
xx = i/(double)(nopoints-1);
xx *= (t1[0] - t0[0]);
outp[i].p[0] = xx;
//printf("~1 div %d = %f\n",i,outp[i].p[0]);
}
for (i = 0; i < (nopoints-1); i++) {
outp[i].p[1] = outp[i+1].p[0] - outp[i].p[0];
//printf("~1 del div %d = %f\n",i,outp[i].p[1]);
}
/* Itterate until the delta between samples is even */
for (j = 0; j < 10; j++) {
double alen, minl, maxl;
double tdiv;
alen = 0.0;
minl = 1e38;
maxl = -1.0;
for (i = 0; i < nopoints; i++) {
rr->interp(rr, &outp[i]);
outp[i].v[2] = outp[i].v[1];
outp[i].v[1] = outp[i].v[0];
outp[i].v[0] = outp[i].p[0];
icmMul3By3x4(outp[i].v, im, outp[i].v);
//printf("~1 locus pnt %d = %f %f %f\n", i,outp[i].v[0],outp[i].v[1],outp[i].v[1]);
if (i > 0) {
double tt[3], len;
icmSub3(tt, outp[i].v, outp[i-1].v);
len = icmNorm3(tt);
outp[i-1].p[2] = len;
if (len > maxl)
maxl = len;
if (len < minl)
minl = len;
alen += len;
}
}
alen /= (nopoints-1.0);
printf("~1 itter %d, alen = %f, minl = %f, maxl = %f\n",j,alen,minl,maxl);
/* Adjust spacing */
tdiv = 0.0;
for (i = 0; i < (nopoints-1); i++) {
outp[i].p[1] *= pow(alen/outp[i].p[2], 1.0);
tdiv += outp[i].p[1];
}
//printf("~1 tdiv = %f\n",tdiv);
for (i = 0; i < (nopoints-1); i++) {
outp[i].p[1] *= (t1[0] - t0[0])/tdiv;
//printf("~1 del div %d = %f\n",i,outp[i].p[1]);
}
tdiv = 0.0;
for (i = 0; i < (nopoints-1); i++) {
tdiv += outp[i].p[1];
}
//printf("~1 tdiv now = %f\n",tdiv);
for (i = 1; i < nopoints; i++) {
outp[i].p[0] = outp[i-1].p[0] + outp[i-1].p[1];
//printf("~1 div %d = %f\n",i,outp[i].p[0]);
}
}
/* Write the CGATS file */
{
time_t clk = time(0);
struct tm *tsp = localtime(&clk);
char *atm = asctime(tsp); /* Ascii time */
cgats *pp;
pp = new_cgats(); /* Create a CGATS structure */
pp->add_other(pp, "TS"); /* Test Set */
pp->add_table(pp, tt_other, 0); /* Add the first table for target points */
pp->add_kword(pp, 0, "DESCRIPTOR", "Argyll Test Point set",NULL);
pp->add_kword(pp, 0, "ORIGINATOR", "Argyll tiffgmts", NULL);
atm[strlen(atm)-1] = '\000'; /* Remove \n from end */
pp->add_kword(pp, 0, "CREATED",atm, NULL);
pp->add_field(pp, 0, "SAMPLE_ID", cs_t);
pp->add_field(pp, 0, "LAB_L", r_t);
pp->add_field(pp, 0, "LAB_A", r_t);
pp->add_field(pp, 0, "LAB_B", r_t);
for (i = 0; i < nopoints; i++) {
char buf[100];
cgats_set_elem ary[1 + 3];
sprintf(buf,"%d",i+1);
ary[0].c = buf;
ary[1 + 0].d = outp[i].v[0];
ary[1 + 1].d = outp[i].v[1];
ary[1 + 2].d = outp[i].v[2];
pp->add_setarr(pp, 0, ary);
}
if (pp->write_name(pp, out_name))
error("Write error : %s",pp->err);
}
/* Create the VRML file */
if (dovrml) {
vrml *vv;
strcpy(xl,".wrl");
printf("Output vrml file '%s'\n",out_name);
if ((vv = new_vrml(out_name, doaxes)) == NULL)
error ("Creating VRML object failed");
#ifdef NEVER
vv->start_line_set(vv);
for (i = 0; i < nopoints; i++) {
vv->add_vertex(vv, outp[i].v);
}
vv->make_lines(vv, nopoints);
#else
for (i = 1; i < nopoints; i++) {
vv->add_cone(vv, outp[i-1].v, outp[i].v, NULL, 0.5);
}
#endif
vv->del(vv);
}
free(outp);
}
rr->del(rr);
return 0;
}
/* Might be easier to close it and re-open it ? */
static icxLuBase *
set_icxLuMatrix(
xicc *xicp,
icmLuBase *plu, /* Pointer to Lu we are expanding (ours) */
int flags, /* white/black point flags */
int nodp, /* Number of points */
cow *ipoints, /* Array of input points in XYZ space */
double dispLuminance, /* > 0.0 if display luminance value and is known */
double wpscale, /* > 0.0 if input white point is to be scaled */
int quality /* Quality metric, 0..3 */
) {
icxLuMatrix *p; /* Object being created */
icc *icco = xicp->pp; /* Underlying icc object */
icmLuMatrix *pmlu = (icmLuMatrix *)plu; /* icc matrix lookup object */
int luflags = 0; /* icxLuMatrix alloc clip, merge flags */
int isLinear = 0; /* NZ if pure linear, gamma = 1.0 */
int isGamma = 0; /* NZ if gamma rather than shaper */
int isShTRC = 0; /* NZ if shared TRCs */
int inputChan = 3; /* Must be RGB like */
int outputChan = 3; /* Must be the PCS */
icmHeader *h = icco->header; /* Pointer to icc header */
int rsplflags = 0; /* Flags for scattered data rspl */
int e, f, i, j;
int maxits = 200; /* Optimisation stop params */
double stopon = 0.01; /* Absolute delta E change to stop on */
cow *points; /* Copy of ipoints */
mxopt os; /* Optimisation information */
double rerr;
#ifdef DEBUG_PLOT
#define XRES 100
double xx[XRES];
double y1[XRES];
#endif /* DEBUG_PLOT */
if (flags & ICX_VERBOSE)
rsplflags |= RSPL_VERBOSE;
luflags = flags; /* Transfer straight though ? */
/* Check out some things about the profile */
{
icmCurve *wor, *wog, *wob;
wor = pmlu->redCurve;
wog = pmlu->greenCurve;
wob = pmlu->blueCurve;
if (wor == wog) {
if (wog != wob) {
xicp->errc = 1;
sprintf(xicp->err,"icx_set_matrix: TRC sharing is inconsistent");
return NULL;
}
isShTRC = 1;
}
if (wor->flag != wog->flag || wog->flag != wob->flag) {
xicp->errc = 1;
sprintf(xicp->err,"icx_set_matrix: TRC type is inconsistent");
return NULL;
}
if (wor->flag == icmCurveGamma) {
isGamma = 1;
}
if (flags & ICX_NO_IN_SHP_LUTS) {
isLinear = 1;
}
}
/* Do basic icxLu creation and initialisation */
if ((p = alloc_icxLuMatrix(xicp, plu, 0, luflags)) == NULL)
return NULL;
p->func = icmFwd; /* Assumed by caller */
/* Get the effective spaces of underlying icm, and set icx the same */
plu->spaces(plu, &p->ins, NULL, &p->outs, NULL, NULL, &p->intent, NULL, &p->pcs, NULL);
/* For set_icx the effective pcs has to be the same as the native pcs */
/* Sanity check for matrix */
if (p->pcs != icSigXYZData) {
p->pp->errc = 1;
sprintf(p->pp->err,"Can't create matrix profile with PCS of Lab !");
p->del((icxLuBase *)p);
return NULL;
}
/* In general the native and effective ranges of the icx will be the same as the */
/* underlying icm lookup object. */
p->plu->get_lutranges(p->plu, p->ninmin, p->ninmax, p->noutmin, p->noutmax);
p->plu->get_ranges(p->plu, p->inmin, p->inmax, p->outmin, p->outmax);
/* If we have a Jab PCS override, reflect this in the effective icx range. */
/* Note that the ab ranges are nominal. They will exceed this range */
/* for colors representable in L*a*b* PCS */
if (p->ins == icxSigJabData) {
p->inmin[0] = 0.0; p->inmax[0] = 100.0;
p->inmin[1] = -128.0; p->inmax[1] = 128.0;
p->inmin[2] = -128.0; p->inmax[2] = 128.0;
} else if (p->outs == icxSigJabData) {
p->outmin[0] = 0.0; p->outmax[0] = 100.0;
p->outmin[1] = -128.0; p->outmax[1] = 128.0;
p->outmin[2] = -128.0; p->outmax[2] = 128.0;
}
/* ------------------------------- */
/* Allocate the array passed to fit_rspl() */
if ((points = (cow *)malloc(sizeof(cow) * nodp)) == NULL) {
p->pp->errc = 2;
sprintf(p->pp->err,"Allocation of scattered coordinate array failed");
p->del((icxLuBase *)p);
return NULL;
}
/* Setup points ready for optimisation */
for (i = 0; i < nodp; i++) {
for (e = 0; e < inputChan; e++)
points[i].p[e] = ipoints[i].p[e];
for (f = 0; f < outputChan; f++)
points[i].v[f] = ipoints[i].v[f];
points[i].w = ipoints[i].w;
/* Make sure its Lab for delta E calculation */
icmXYZ2Lab(&icmD50, points[i].v, points[i].v);
}
/* Setup for optimising run */
if (flags & ICX_VERBOSE)
os.verb = 1;
else
os.verb = 0;
os.points = points;
os.nodp = nodp;
os.isShTRC = 0;
/* Set quality/effort factors */
if (quality >= 3) { /* Ultra high */
os.norders = 20;
maxits = 5000;
stopon = 0.000001;
} else if (quality == 2) { /* High */
os.norders = 15;
maxits = 2000;
stopon = 0.00001;
} else if (quality == 1) { /* Medium */
os.norders = 10;
maxits = 1000;
stopon = 0.0001;
} else { /* Low */
os.norders = 5;
maxits = 500;
stopon = 0.001;
}
if (os.norders > MXNORDERS)
os.norders = MXNORDERS;
/* Set initial optimisation values */
os.v[0] = 0.4; os.v[1] = 0.4; os.v[2] = 0.2; /* Matrix */
os.v[3] = 0.2; os.v[4] = 0.8; os.v[5] = 0.1;
os.v[6] = 0.02; os.v[7] = 0.15; os.v[8] = 1.3;
if (isLinear) { /* Just gamma curve */
os.isLinear = 1;
os.isGamma = 1;
os.optdim = 9;
os.v[9] = os.v[10] = os.v[11] = 1.0; /* Linear */
} else if (isGamma) { /* Just gamma curve */
os.isLinear = 0;
os.isGamma = 1;
os.optdim = 12;
os.v[9] = os.v[10] = os.v[11] = 2.4; /* Gamma */
} else { /* Creating input curves */
os.isLinear = 0;
os.isGamma = 0;
os.optdim = 12 + 3 * os.norders;
os.v[9] = os.v[10] = os.v[11] = 0.0; /* Offset */
os.v[12] = os.v[13] = os.v[14] = 2.0; /* 0th Harmonic */
for (i = 15; i < os.optdim; i++)
os.v[i] = 0.0; /* Higher orders */
}
/* Set search area to starting values */
for (j = 0; j < os.optdim; j++)
os.sa[j] = 0.2; /* Matrix, Gamma, Offsets, harmonics */
if (isShTRC) { /* Adjust things for shared */
os.isShTRC = 1;
if (os.optdim > 9) {
/* Pack red paramenters down */
for (i = 9; i < os.optdim; i++) {
os.v[i] = os.v[(i - 9) * 3 + 9];
os.sa[i] = os.sa[(i - 9) * 3 + 9];
}
os.optdim = ((os.optdim - 9)/3) + 9;
}
}
if (os.verb) {
if (os.isLinear)
printf("Creating matrix...\n");
else
printf("Creating matrix and curves...\n");
}
if (powell(&rerr, os.optdim, os.v, os.sa, stopon, maxits,
mxoptfunc, (void *)&os, mxprogfunc, (void *)&os) != 0)
warning("Powell failed to converge, residual error = %f",rerr);
#ifdef NEVER
printf("Matrix = %f %f %f\n",os.v[0], os.v[1], os.v[2]);
printf(" %f %f %f\n",os.v[3], os.v[4], os.v[5]);
printf(" %f %f %f\n",os.v[6], os.v[7], os.v[8]);
if (!isLinear) { /* Creating input curves */
if (isGamma) { /* Creating input curves */
if (isShTRC)
printf("Gamma = %f\n",os.v[9]);
else
printf("Gamma = %f %f %f\n",os.v[9], os.v[10], os.v[11]);
} else { /* Creating input curves */
if (isShTRC)
printf("Offset = %f\n",os.v[9]);
else
printf("Offset = %f %f %f\n",os.v[9], os.v[10], os.v[11]);
for (j = 0; j < os.norders; j++) {
if (isShTRC)
printf("%d harmonics = %f\n",j, os.v[10 + j]);
else
printf("%d harmonics = %f %f %f\n",j, os.v[12 + j * 3], os.v[13 + j * 3],
os.v[14 + j * 3]);
}
}
}
#endif /* NEVER */
/* Deal with white/black points */
if (flags & (ICX_SET_WHITE | ICX_SET_BLACK)) {
double wp[3]; /* Absolute White point in XYZ */
double bp[3]; /* Absolute Black point in XYZ */
if (flags & ICX_VERBOSE)
printf("Find white & black points\n");
icmXYZ2Ary(wp, icmD50); /* Set a default value - D50 */
icmXYZ2Ary(bp, icmBlack); /* Set a default value - absolute black */
/* Figure out the device values for white */
if (h->deviceClass == icSigInputClass) {
double dwhite[MXDI], dblack[MXDI]; /* Device white and black values */
double Lmax = -1e60;
double Lmin = 1e60;
/* We assume that the input target is well behaved, */
/* and that it includes a white and black point patch, */
/* and that they have the extreme L values */
/*
NOTE that this may not be the best approach !
It may be better to average the chromaticity
of all the neutral seeming patches, since
the whitest patch may have (for instance)
a blue tint.
*/
/* Discover the white and black points */
for (i = 0; i < nodp; i++) {
if (points[i].v[0] > Lmax) {
Lmax =
wp[0] = points[i].v[0];
wp[1] = points[i].v[1];
wp[2] = points[i].v[2];
dwhite[0] = points[i].p[0];
dwhite[1] = points[i].p[1];
dwhite[2] = points[i].p[2];
}
if (points[i].v[0] < Lmin) {
Lmin =
bp[0] = points[i].v[0];
bp[1] = points[i].v[1];
bp[2] = points[i].v[2];
dblack[0] = points[i].p[0];
dblack[1] = points[i].p[1];
dblack[2] = points[i].p[2];
}
}
/* Lookup device white/black values in model */
mxmfunc(&os, os.v, wp, dwhite);
mxmfunc(&os, os.v, bp, dblack);
/* If we were given an input white point scale factor, apply it */
if (wpscale >= 0.0) {
wp[0] *= wpscale;
wp[1] *= wpscale;
wp[2] *= wpscale;
}
} else { /* Assume Monitor class */
switch(h->colorSpace) {
case icSigCmyData: {
double cmy[3];
/* Lookup white value */
for (e = 0; e < inputChan; e++)
cmy[e] = 0.0;
mxmfunc(&os, os.v, wp, cmy);
if (flags & ICX_VERBOSE)
printf("Initial white point = %f %f %f\n",wp[0],wp[1],wp[2]);
/* Lookup black value */
for (e = 0; e < inputChan; e++)
cmy[e] = 1.0;
mxmfunc(&os, os.v, bp, cmy);
if (flags & ICX_VERBOSE)
printf("Initial black point = %f %f %f\n",bp[0],bp[1],bp[2]);
break;
}
case icSigRgbData: {
double rgb[3];
/* Lookup white value */
for (e = 0; e < inputChan; e++)
rgb[e] = 1.0;
mxmfunc(&os, os.v, wp, rgb);
if (flags & ICX_VERBOSE)
printf("Initial white point = %f %f %f\n",wp[0],wp[1],wp[2]);
/* Lookup black value */
for (e = 0; e < inputChan; e++)
rgb[e] = 0.0;
mxmfunc(&os, os.v, bp, rgb);
if (flags & ICX_VERBOSE)
printf("Initial black point = %f %f %f\n",bp[0],bp[1],bp[2]);
break;
}
default: {
xicp->errc = 1;
sprintf(xicp->err,"set_icxLuMatrix: can't handle color space %s",
icm2str(icmColorSpaceSignature, h->colorSpace));
p->del((icxLuBase *)p);
return NULL;
break;
}
}
}
/* If this is a display, adjust the white point to be */
/* exactly Y = 1.0, and compensate the matrix, dispLuminance */
/* and black point accordingly. */
if (h->deviceClass == icSigDisplayClass) {
double scale = 1.0/wp[1];
int i;
for (i = 0; i < 9; i++) {
os.v[i] *= scale;
}
dispLuminance *= wp[1];
for (i = 0; i < 3; i++) {
wp[i] *= scale;
bp[i] *= scale;
}
}
/* Absolute luminance tag */
if (flags & ICX_WRITE_WBL
&& h->deviceClass == icSigDisplayClass
&& dispLuminance > 0.0) {
icmXYZArray *wo;
if ((wo = (icmXYZArray *)icco->read_tag(
icco, icSigLuminanceTag)) == NULL) {
xicp->errc = 1;
sprintf(xicp->err,"icx_set_luminance: couldn't find luminance tag");
p->del((icxLuBase *)p);
return NULL;
}
if (wo->ttype != icSigXYZArrayType) {
xicp->errc = 1;
sprintf(xicp->err,"luminance: tag has wrong type");
p->del((icxLuBase *)p);
return NULL;
}
wo->size = 1;
wo->allocate((icmBase *)wo); /* Allocate space */
wo->data[0].X = 0.0;
wo->data[0].Y = dispLuminance;
wo->data[0].Z = 0.0;
if (flags & ICX_VERBOSE)
printf("Display Luminance = %f\n", wo->data[0].Y);
}
/* Write white and black tags */
if ((flags & ICX_WRITE_WBL)
&& (flags & ICX_SET_WHITE)) { /* White Point Tag: */
icmXYZArray *wo;
if ((wo = (icmXYZArray *)icco->read_tag(
icco, icSigMediaWhitePointTag)) == NULL) {
xicp->errc = 1;
sprintf(xicp->err,"icx_set_white_black: couldn't find white tag");
p->del((icxLuBase *)p);
return NULL;
}
if (wo->ttype != icSigXYZArrayType) {
xicp->errc = 1;
sprintf(xicp->err,"icx_set_white_black: white tag has wrong type");
p->del((icxLuBase *)p);
return NULL;
}
wo->size = 1;
wo->allocate((icmBase *)wo); /* Allocate space */
wo->data[0].X = wp[0];
wo->data[0].Y = wp[1];
wo->data[0].Z = wp[2];
if (flags & ICX_VERBOSE)
printf("White point XYZ = %f %f %f\n",wp[0],wp[1],wp[2]);
}
if ((flags & ICX_WRITE_WBL)
&& (flags & ICX_SET_BLACK)) { /* Black Point Tag: */
icmXYZArray *wo;
if ((wo = (icmXYZArray *)icco->read_tag(
icco, icSigMediaBlackPointTag)) == NULL) {
xicp->errc = 1;
sprintf(xicp->err,"icx_set_white_black: couldn't find black tag");
p->del((icxLuBase *)p);
return NULL;
}
if (wo->ttype != icSigXYZArrayType) {
xicp->errc = 1;
sprintf(xicp->err,"icx_set_white_black: black tag has wrong type");
p->del((icxLuBase *)p);
return NULL;
}
wo->size = 1;
wo->allocate((icmBase *)wo); /* Allocate space */
wo->data[0].X = bp[0];
wo->data[0].Y = bp[1];
wo->data[0].Z = bp[2];
if (flags & ICX_VERBOSE)
printf("Black point XYZ = %f %f %f\n",bp[0],bp[1],bp[2]);
}
/* Fix matrix to be relative to D50 white point, rather than absolute */
if (flags & ICX_SET_WHITE) {
icmXYZNumber swp;
double mat[3][3];
if (flags & ICX_VERBOSE)
printf("Fixup matrix for white point\n");
icmAry2XYZ(swp, wp);
/* Transfer from parameter to matrix */
mat[0][0] = os.v[0]; mat[0][1] = os.v[1]; mat[0][2] = os.v[2];
mat[1][0] = os.v[3]; mat[1][1] = os.v[4]; mat[1][2] = os.v[5];
mat[2][0] = os.v[6]; mat[2][1] = os.v[7]; mat[2][2] = os.v[8];
/* Adapt matrix */
icmChromAdaptMatrix(ICM_CAM_MULMATRIX | ICM_CAM_BRADFORD, icmD50, swp, mat);
/* Transfer back to parameters */
os.v[0] = mat[0][0]; os.v[1] = mat[0][1]; os.v[2] = mat[0][2];
os.v[3] = mat[1][0]; os.v[4] = mat[1][1]; os.v[5] = mat[1][2];
os.v[6] = mat[2][0]; os.v[7] = mat[2][1]; os.v[8] = mat[2][2];
if (flags & ICX_VERBOSE) {
printf("After white point adjust:\n");
printf("Matrix = %f %f %f\n",os.v[0], os.v[1], os.v[2]);
printf(" %f %f %f\n",os.v[3], os.v[4], os.v[5]);
printf(" %f %f %f\n",os.v[6], os.v[7], os.v[8]);
}
}
}
if (flags & ICX_VERBOSE)
printf("Done gamma/shaper and matrix creation\n");
/* Write the gamma/shaper and matrix to the icc memory structures */
if (!isGamma) { /* Creating input curves */
unsigned int ui;
icmCurve *wor, *wog, *wob;
wor = pmlu->redCurve;
wog = pmlu->greenCurve;
wob = pmlu->blueCurve;
for (ui = 0; ui < wor->size; ui++) {
double in, rgb[3];
for (j = 0; j < 3; j++) {
in = (double)ui / (wor->size - 1.0);
mxmfunc1(&os, j, os.v, &rgb[j], &in);
}
wor->data[ui] = rgb[0]; /* Curve values 0.0 - 1.0 */
if (!isShTRC) {
wog->data[ui] = rgb[1];
wob->data[ui] = rgb[2];
}
}
#ifdef DEBUG_PLOT
/* Display the result fit */
for (j = 0; j < 3; j++) {
for (i = 0; i < XRES; i++) {
double x, y;
xx[i] = x = i/(double)(XRES-1);
mxmfunc1(&os, j, os.v, &y, &x);
y1[i] = y;
}
do_plot(xx,y1,NULL,NULL,XRES);
}
#endif /* DEBUG_PLOT */
} else { /* Gamma */
icmCurve *wor, *wog, *wob;
wor = pmlu->redCurve;
wog = pmlu->greenCurve;
wob = pmlu->blueCurve;
wor->data[0] = os.v[9]; /* Gamma values */
if (!isShTRC) {
wog->data[0] = os.v[10];
wob->data[0] = os.v[11];
}
}
/* Matrix values */
{
icmXYZArray *wor, *wog, *wob;
wor = pmlu->redColrnt;
wog = pmlu->greenColrnt;
wob = pmlu->blueColrnt;
wor->data[0].X = os.v[0]; wor->data[0].Y = os.v[3]; wor->data[0].Z = os.v[6];
wog->data[0].X = os.v[1]; wog->data[0].Y = os.v[4]; wog->data[0].Z = os.v[7];
wob->data[0].X = os.v[2]; wob->data[0].Y = os.v[5]; wob->data[0].Z = os.v[8];
/* Load into pmlu matrix and inverse ??? */
}
/* Free the coordinate lists */
free(points);
if (flags & ICX_VERBOSE)
printf("Profile done\n");
return (icxLuBase *)p;
}
int
main(
int argc,
char *argv[]
) {
int fa,nfa; /* argument we're looking at */
int verb = 0;
int chan = 0; /* Chosen channel to plot against */
char in_name[100];
char *buf, *outc;
int ti;
cgats *cgf = NULL; /* cgats file data */
int isLab = 0; /* cgats output is Lab, else XYZ */
char *xyzfname[3] = { "XYZ_X", "XYZ_Y", "XYZ_Z" };
char *labfname[3] = { "LAB_L", "LAB_A", "LAB_B" };
int npat; /* Number of patches */
inkmask nmask; /* Device inkmask */
int nchan; /* Number of input chanels */
char *bident; /* Base ident */
int chix[ICX_MXINKS]; /* Device chanel indexes */
int pcsix[3]; /* Device chanel indexes */
pval *pat; /* patch values */
int i, j;
error_program = argv[0];
if (argc < 2)
usage();
/* Process the arguments */
for(fa = 1;fa < argc;fa++) {
nfa = fa; /* skip to nfa if next argument is used */
if (argv[fa][0] == '-') { /* Look for any flags */
char *na = NULL; /* next argument after flag, null if none */
if (argv[fa][2] != '\000')
na = &argv[fa][2]; /* next is directly after flag */
else {
if ((fa+1) < argc) {
if (argv[fa+1][0] != '-') {
nfa = fa + 1;
na = argv[nfa]; /* next is seperate non-flag argument */
}
}
}
/* Verbosity */
if (argv[fa][1] == 'v' || argv[fa][1] == 'V') {
verb = 1;
}
else if (argv[fa][1] >= '0' && argv[fa][1] <= '9') {
chan = argv[fa][1] - '0';
}
else if (argv[fa][1] == '?')
usage();
else
usage();
}
else
break;
}
if (fa >= argc || argv[fa][0] == '-') usage();
strcpy(in_name,argv[fa]);
/* Open CIE target values */
cgf = new_cgats(); /* Create a CGATS structure */
cgf->add_other(cgf, "CTI3");/* our special input type is Calibration Target Information 3 */
if (cgf->read_name(cgf, in_name))
error("CGATS file read error %s on file '%s'",cgf->err, in_name);
if (cgf->ntables == 0 || cgf->t[0].tt != tt_other || cgf->t[0].oi != 0)
error ("Profile file '%s' isn't a CTI3 format file",in_name);
if (cgf->ntables < 1)
error ("Input file '%s' doesn't contain at least one table",in_name);
if ((ti = cgf->find_kword(cgf, 0, "COLOR_REP")) < 0)
error("Input file doesn't contain keyword COLOR_REPS");
if ((buf = strdup(cgf->t[0].kdata[ti])) == NULL)
error("Malloc failed");
/* Split COLOR_REP into device and PCS space */
if ((outc = strchr(buf, '_')) == NULL)
error("COLOR_REP '%s' invalid", cgf->t[0].kdata[ti]);
*outc++ = '\000';
if (strcmp(outc, "XYZ") == 0) {
isLab = 0;
} else if (strcmp(outc, "LAB") == 0) {
isLab = 1;
} else
error("COLOR_REP '%s' invalid (Neither XYZ nor LAB)", cgf->t[0].kdata[ti]);
if ((nmask = icx_char2inkmask(buf)) == 0) {
error ("File '%s' keyword COLOR_REPS has unknown device value '%s'",in_name,buf);
}
free(buf);
nchan = icx_noofinks(nmask);
bident = icx_inkmask2char(nmask, 0); /* Base ident (No possible 'i') */
/* Find device fields */
for (j = 0; j < nchan; j++) {
int ii, imask;
char fname[100];
imask = icx_index2ink(nmask, j);
sprintf(fname,"%s_%s",nmask == ICX_W || nmask == ICX_K ? "GRAY" : bident,
icx_ink2char(imask));
if ((ii = cgf->find_field(cgf, 0, fname)) < 0)
error ("Input file doesn't contain field %s",fname);
if (cgf->t[0].ftype[ii] != r_t)
error ("Field %s is wrong type",fname);
chix[j] = ii;
}
/* Find PCS fields */
for (j = 0; j < 3; j++) {
int ii;
if ((ii = cgf->find_field(cgf, 0, isLab ? labfname[j] : xyzfname[j])) < 0)
error ("Input file doesn't contain field %s",isLab ? labfname[j] : xyzfname[j]);
if (cgf->t[0].ftype[ii] != r_t)
error ("Field %s is wrong type",isLab ? labfname[j] : xyzfname[j]);
pcsix[j] = ii;
}
npat = cgf->t[0].nsets; /* Number of patches */
if (npat <= 0)
error("No sets of data in file '%s'",in_name);
/* Allocate arrays to hold test patch input and output values */
if ((pat = (pval *)malloc(sizeof(pval) * npat)) == NULL)
error("Malloc failed - pat[]");
/* Grab all the values */
for (i = 0; i < npat; i++) {
pat[i].v[0] = *((double *)cgf->t[0].fdata[i][pcsix[0]]);
pat[i].v[1] = *((double *)cgf->t[0].fdata[i][pcsix[1]]);
pat[i].v[2] = *((double *)cgf->t[0].fdata[i][pcsix[2]]);
if (!isLab) {
pat[i].v[0] /= 100.0; /* Normalise XYZ to range 0.0 - 1.0 */
pat[i].v[1] /= 100.0;
pat[i].v[2] /= 100.0;
}
if (!isLab) { /* Convert test patch result XYZ to PCS (D50 Lab) */
icmXYZ2Lab(&icmD50, pat[i].v, pat[i].v);
}
for (j = 0; j < nchan; j++) {
pat[i].d[j] = *((double *)cgf->t[0].fdata[i][chix[j]]);
}
}
/* Sort by the selected channel */
#define HEAP_COMPARE(A,B) (A.d[chan] < B.d[chan])
HEAPSORT(pval, pat, npat);
#undef HEAP_COMPARE
/* Create the plot */
{
int i;
double *xx;
double *y0;
double *y1;
double *y2;
if ((xx = (double *)malloc(sizeof(double) * npat)) == NULL)
error("Malloc failed - xx[]");
if ((y0 = (double *)malloc(sizeof(double) * npat)) == NULL)
error("Malloc failed - y0[]");
if ((y1 = (double *)malloc(sizeof(double) * npat)) == NULL)
error("Malloc failed - y1[]");
if ((y2 = (double *)malloc(sizeof(double) * npat)) == NULL)
error("Malloc failed - y2[]");
for (i = 0; i < npat; i++) {
xx[i] = pat[i].d[chan];
y0[i] = pat[i].v[0];
y1[i] = 50 + pat[i].v[1]/2.0;
y2[i] = 50 + pat[i].v[2]/2.0;
// printf("~1 %d: xx = %f, y = %f %f %f\n",i,xx[i],y0[i],y1[i],y2[i]);
}
do_plot6(xx,y0,y1,NULL,NULL,y2,NULL,npat);
free(y2);
free(y1);
free(y0);
free(xx);
}
free(pat);
cgf->del(cgf);
return 0;
}
/* Create a ccmx from measurements. return nz on error. */
static int create_ccmx(ccmx *p,
char *desc, /* General description (optional) */
char *inst, /* Instrument description to copy from */
char *disp, /* Display make and model (optional) */
disptech dtech, /* Display technology enum */
int refrmode, /* Display refresh mode, -1 = unknown, 0 = n, 1 = yes */
int cbid, /* Display type calibration base index, 0 = unknown */
char *sel, /* UI selector characters - NULL for none */
char *refd, /* Reference spectrometer description (optional) */
int oem, /* NZ if OEM source */
int npat, /* Number of samples in following arrays */
double (*refs)[3], /* Array of XYZ values from spectrometer */
double (*cols)[3] /* Array of XYZ values from colorimeter */
) {
int i, mxix;
double maxy = -1e6;
cntx cx;
double cp[9], sa[9];
if ((p->desc = desc) != NULL && (p->desc = strdup(desc)) == NULL) {
sprintf(p->err, "create_ccmx: malloc failed");
return 2;
}
if ((p->inst = inst) != NULL && (p->inst = strdup(inst)) == NULL) {
sprintf(p->err, "create_ccmx: malloc failed");
return 2;
}
if ((p->disp = disp) != NULL && (p->disp = strdup(disp)) == NULL) {
sprintf(p->err, "create_ccmx: malloc failed");
return 2;
}
p->dtech = dtech;
p->refrmode = refrmode;
p->cc_cbid = cbid;
if (sel != NULL) {
if ((p->sel = strdup(sel)) == NULL) {
sprintf(p->err, "create_ccmx: malloc sel failed");
return 2;
}
}
if ((p->ref = refd) != NULL && (p->ref = strdup(refd)) == NULL) {
sprintf(p->err, "create_ccmx: malloc failed");
return 2;
}
p->oem = oem;
/* Find the white patch */
cx.npat = npat;
cx.refs = refs;
cx.cols = cols;
for (i = 0; i < npat; i++) {
if (refs[i][1] > maxy) {
maxy = refs[i][1];
cx.wix = i;
}
}
#ifdef DEBUG
printf("white = %f %f %f\n",refs[cx.wix][0],refs[cx.wix][1],refs[cx.wix][1]);
#endif
cx.wh.X = refs[cx.wix][0];
cx.wh.Y = refs[cx.wix][1];
cx.wh.Z = refs[cx.wix][2];
/* Starting matrix */
cp[0] = 1.0; cp[1] = 0.0; cp[2] = 0.0;
cp[3] = 0.0; cp[4] = 1.0; cp[5] = 0.0;
cp[6] = 0.0; cp[7] = 0.0; cp[8] = 1.0;
for (i = 0; i < 9; i++)
sa[i] = 0.1;
if (powell(NULL, 9, cp, sa, 1e-6, 2000, optf, &cx, NULL, NULL) < 0.0) {
sprintf(p->err, "create_ccmx: powell() failed");
return 1;
}
p->matrix[0][0] = cp[0];
p->matrix[0][1] = cp[1];
p->matrix[0][2] = cp[2];
p->matrix[1][0] = cp[3];
p->matrix[1][1] = cp[4];
p->matrix[1][2] = cp[5];
p->matrix[2][0] = cp[6];
p->matrix[2][1] = cp[7];
p->matrix[2][2] = cp[8];
/* Compute the average and max errors */
p->av_err = p->mx_err = 0.0;
for (i = 0; i < npat; i++) {
double tlab[3], xyz[3], lab[3], de;
icmXYZ2Lab(&cx.wh, tlab, cx.refs[i]);
icmMulBy3x3(xyz, p->matrix, cx.cols[i]);
icmXYZ2Lab(&cx.wh, lab, xyz);
de = icmCIE94(tlab, lab);
p->av_err += de;
if (de > p->mx_err) {
p->mx_err = de;
mxix = i;
}
//printf("~1 %d: de %f, tlab %f %f %f, lab %f %f %f\n",i,de,tlab[0], tlab[1], tlab[2], lab[0], lab[1], lab[2]);
}
p->av_err /= (double)npat;
//printf("~1 max error is index %d\n",mxix);
#ifdef DEBUG
printf("Average error %f, max %f\n",p->av_err,p->mx_err);
printf("Correction matrix is:\n");
printf(" %f %f %f\n", cp[0], cp[1], cp[2]);
printf(" %f %f %f\n", cp[3], cp[4], cp[5]);
printf(" %f %f %f\n", cp[6], cp[7], cp[8]);
#endif
return 0;
}
static int do_spec(char *name, xspect *sp) {
int i;
double xyz[3]; /* Color temperature */
double Yxy[3];
double Lab[3]; /* D50 Lab value */
double xx[XRES];
double y1[XRES];
double cct, vct;
double cct_xyz[3], vct_xyz[3];
double cct_lab[3], vct_lab[3];
icmXYZNumber wp;
double de;
printf("\n");
/* Compute XYZ of illuminant */
if (icx_ill_sp2XYZ(xyz, icxOT_CIE_1931_2, NULL, icxIT_custom, 0, sp) != 0)
error ("icx_sp_temp2XYZ returned error");
icmXYZ2Yxy(Yxy, xyz);
icmXYZ2Lab(&icmD50, Lab, xyz);
printf("Type = %s\n",name);
printf("XYZ = %f %f %f, x,y = %f %f\n", xyz[0], xyz[1], xyz[2], Yxy[1], Yxy[2]);
printf("D50 L*a*b* = %f %f %f\n", Lab[0], Lab[1], Lab[2]);
/* Compute CCT */
if ((cct = icx_XYZ2ill_ct(cct_xyz, BBTYPE, icxOT_CIE_1931_2, NULL, xyz, NULL, 0)) < 0)
error ("Got bad cct\n");
/* Compute VCT */
if ((vct = icx_XYZ2ill_ct(vct_xyz, BBTYPE, icxOT_CIE_1931_2, NULL, xyz, NULL, 1)) < 0)
error ("Got bad vct\n");
#ifdef PLANKIAN
printf("CCT = %f, VCT = %f\n",cct, vct);
#else
printf("CDT = %f, VDT = %f\n",cct, vct);
#endif
{
int invalid = 0;
double cri;
cri = icx_CIE1995_CRI(&invalid, sp);
printf("CRI = %.1f%s\n",cri,invalid ? " (Invalid)" : "");
}
/* Use modern color difference - gives a better visual match */
icmAry2XYZ(wp, vct_xyz);
icmXYZ2Lab(&wp, cct_lab, cct_xyz);
icmXYZ2Lab(&wp, vct_lab, vct_xyz);
de = icmCIE2K(cct_lab, vct_lab);
printf("CIEDE2000 Delta E = %f\n",de);
/* Plot spectrum out */
for (i = 0; i < XRES; i++) {
double ww;
ww = (sp->spec_wl_long - sp->spec_wl_short)
* ((double)i/(XRES-1.0)) + sp->spec_wl_short;
xx[i] = ww;
y1[i] = value_xspect(sp, ww);
}
do_plot(xx,y1,NULL,NULL,i);
return 0;
}
int
main(
int argc,
char *argv[]
) {
int fa,nfa; /* argument we're looking at */
int k;
int verb = 0;
char in_name[100] = { '\000' }; /* Spectrum name */
double temp;
xspect sp; /* Spectra */
icxIllumeType ilType;
char buf[200];
error_program = argv[0];
/* Process the arguments */
for(fa = 1;fa < argc;fa++) {
nfa = fa; /* skip to nfa if next argument is used */
if (argv[fa][0] == '-') { /* Look for any flags */
char *na = NULL; /* next argument after flag, null if none */
if (argv[fa][2] != '\000')
na = &argv[fa][2]; /* next is directly after flag */
else {
if ((fa+1) < argc) {
if (argv[fa+1][0] != '-') {
nfa = fa + 1;
na = argv[nfa]; /* next is seperate non-flag argument */
}
}
}
/* Verbosity */
if (argv[fa][1] == 'v' || argv[fa][1] == 'V') {
verb = 1;
} else {
usage();
}
}
else
break;
}
if (fa < argc && argv[fa][0] != '-')
strcpy(in_name,argv[fa]);
#ifdef NEVER /* hack test */
{
#define NTESTS 5
int i;
double cct, vct;
double de1, de2;
double xyz[NTESTS][3] = {
{ 92.250000, 97.750000, 89.650000 }, /* Rogers spotread verification result */
{ 94.197915, 97.686362, 80.560411, }, /* Rogers target */
{ 93.51, 97.12, 80.86 }, /* Rogers test ? */
{ 75.31, 78.20, 64.59 }, /* Mac LCD test */
{ 42.98, 44.62, 36.95 } /* Hitachie CRT test */
};
double axyz[3];
double lab[3], alab[3];
for (i = 0; i < NTESTS; i++) {
/* Compute CCT */
if ((cct = icx_XYZ2ill_ct(axyz, icxIT_Ptemp, icxOT_CIE_1931_2, NULL, xyz[i], NULL, 0)) < 0)
error ("Got bad cct\n");
axyz[0] /= axyz[1];
axyz[2] /= axyz[1];
axyz[1] /= axyz[1];
icmXYZ2Lab(&icmD50, alab, axyz);
axyz[0] = xyz[i][0] / xyz[i][1];
axyz[2] = xyz[i][2] / xyz[i][1];
axyz[1] = xyz[i][1] / xyz[i][1];
icmXYZ2Lab(&icmD50, lab, axyz);
de1 = icmCIE2K(lab, alab);
/* Compute VCT */
if ((vct = icx_XYZ2ill_ct(axyz, icxIT_Ptemp, icxOT_CIE_1931_2, NULL, xyz[i], NULL, 1)) < 0)
error ("Got bad vct\n");
axyz[0] /= axyz[1];
axyz[2] /= axyz[1];
axyz[1] /= axyz[1];
icmXYZ2Lab(&icmD50, alab, axyz);
axyz[0] = xyz[i][0] / xyz[i][1];
axyz[2] = xyz[i][2] / xyz[i][1];
axyz[1] = xyz[i][1] / xyz[i][1];
icmXYZ2Lab(&icmD50, lab, axyz);
de2 = icmCIE2K(lab, alab);
printf("XYZ %f %f %f, CCT = %f de %f, VCT = %f de %f\n",xyz[i][0], xyz[i][1], xyz[i][2], cct, de1, vct, de1);
/* Compute CCT */
if ((cct = icx_XYZ2ill_ct(axyz, icxIT_Dtemp, icxOT_CIE_1931_2, NULL, xyz[i], NULL, 0)) < 0)
error ("Got bad cct\n");
axyz[0] /= axyz[1];
axyz[2] /= axyz[1];
axyz[1] /= axyz[1];
icmXYZ2Lab(&icmD50, alab, axyz);
axyz[0] = xyz[i][0] / xyz[i][1];
axyz[2] = xyz[i][2] / xyz[i][1];
axyz[1] = xyz[i][1] / xyz[i][1];
icmXYZ2Lab(&icmD50, lab, axyz);
de1 = icmCIE2K(lab, alab);
/* Compute VCT */
if ((vct = icx_XYZ2ill_ct(axyz, icxIT_Dtemp, icxOT_CIE_1931_2, NULL, xyz[i], NULL, 1)) < 0)
error ("Got bad vct\n");
axyz[0] /= axyz[1];
axyz[2] /= axyz[1];
axyz[1] /= axyz[1];
icmXYZ2Lab(&icmD50, alab, axyz);
axyz[0] = xyz[i][0] / xyz[i][1];
axyz[2] = xyz[i][2] / xyz[i][1];
axyz[1] = xyz[i][1] / xyz[i][1];
icmXYZ2Lab(&icmD50, lab, axyz);
de2 = icmCIE2K(lab, alab);
printf("XYZ %f %f %f, CDT = %f de %f, VDT = %f de %f\n",xyz[i][0], xyz[i][1], xyz[i][2], cct, de1, vct, de2);
}
}
#endif
if (in_name[0] != '\000') {
if (read_xspect(&sp, in_name) != 0)
error ("Unable to read custom spectrum '%s'",in_name);
sprintf(buf, "File '%s'",in_name);
do_spec(buf, &sp);
} else {
/* For each standard illuminant */
for (ilType = icxIT_A; ilType <= icxIT_F10; ilType++) {
char *inm = NULL;
switch (ilType) {
case icxIT_A:
inm = "A"; break;
case icxIT_C:
inm = "C"; break;
case icxIT_D50:
inm = "D50"; break;
case icxIT_D65:
inm = "D65"; break;
case icxIT_F5:
inm = "F5"; break;
case icxIT_F8:
inm = "F8"; break;
case icxIT_F10:
inm = "F10"; break;
default:
inm = "Unknown"; break;
break;
}
if (standardIlluminant(&sp, ilType, 0) != 0)
error ("standardIlluminant returned error");
do_spec(inm, &sp);
}
/* For each material and illuminant */
for (temp = 2500; temp <= 9000; temp += 500) {
for (k = 0; k < 2; k++) {
ilType = k == 0 ? icxIT_Dtemp : icxIT_Ptemp;
if (standardIlluminant(&sp, ilType, temp) != 0)
error ("standardIlluminant returned error");
sprintf(buf, "%s at %f", k == 0 ? "Daylight" : "Black body", temp);
do_spec(buf, &sp);
}
}
}
return 0;
}
int main(int argc, char *argv[])
{
int i,j,k;
int fa,nfa; /* current argument we're looking at */
int verb = 0;
static char inname[200] = { 0 }; /* Input cgats file base name */
static char outname[200] = { 0 }; /* Output cgats file base name */
cgats *icg; /* input cgats structure */
cgats *ocg; /* output cgats structure */
time_t clk = time(0);
struct tm *tsp = localtime(&clk);
char *atm = asctime(tsp); /* Ascii time */
int ti; /* Temporary index */
edatas ed; /* Optimising function data structure */
double resid[4];
double presid,dresid;
double sarea;
error_program = argv[0];
if (argc <= 1)
usage();
/* Process the arguments */
for(fa = 1;fa < argc;fa++)
{
nfa = fa; /* skip to nfa if next argument is used */
if (argv[fa][0] == '-') /* Look for any flags */
{
char *na = NULL; /* next argument after flag, null if none */
if (argv[fa][2] != '\000')
na = &argv[fa][2]; /* next is directly after flag */
else
{
if ((fa+1) < argc)
{
if (argv[fa+1][0] != '-')
{
nfa = fa + 1;
na = argv[nfa]; /* next is seperate non-flag argument */
}
}
}
if (argv[fa][1] == '?')
usage();
else if (argv[fa][1] == 'v' || argv[fa][1] == 'V')
verb = 1;
else
usage();
}
else
break;
}
/* Get the file name argument */
if (fa >= argc || argv[fa][0] == '-') usage();
strcpy(inname,argv[fa]);
strcat(inname,".ti3");
strcpy(outname,argv[fa]);
strcat(outname,".pr1");
icg = new_cgats(); /* Create a CGATS structure */
icg->add_other(icg, "CTI3"); /* our special input type is Calibration Target Information 3 */
if (icg->read_name(icg, inname))
error("CGATS file read error : %s",icg->err);
if (icg->ntables == 0 || icg->t[0].tt != tt_other || icg->t[0].oi != 0)
error ("Input file isn't a CTI3 format file");
if (icg->ntables != 1)
error ("Input file doesn't contain exactly one table");
if ((ed.npat = icg->t[0].nsets) <= 0)
error ("No sets of data");
if (verb) {
printf("No of test patches = %d\n",ed.npat);
}
if ((ed.cols = (col *)malloc(sizeof(col) * ed.npat)) == NULL)
error("Malloc failed!");
/* Setup output cgats file */
/* This is a simple interpolation CMYK -> XYZ device profile */
ocg = new_cgats(); /* Create a CGATS structure */
ocg->add_other(ocg, "PROF1"); /* our special type is Profile type 1 */
ocg->add_table(ocg, tt_other, 0); /* Start the first table */
ocg->add_kword(ocg, 0, "DESCRIPTOR", "Argyll Calibration Device Profile Type 1",NULL);
ocg->add_kword(ocg, 0, "ORIGINATOR", "Argyll sprof", NULL);
atm[strlen(atm)-1] = '\000'; /* Remove \n from end */
ocg->add_kword(ocg, 0, "CREATED",atm, NULL);
/* Figure out the color space */
if ((ti = icg->find_kword(icg, 0, "COLOR_REP")) < 0)
error ("Input file doesn't contain keyword COLOR_REPS");
if (strcmp(icg->t[0].kdata[ti],"CMYK_XYZ") == 0) {
int ci, mi, yi, ki;
int Xi, Yi, Zi;
if ((ci = icg->find_field(icg, 0, "CMYK_C")) < 0)
error ("Input file doesn't contain field CMYK_C");
if (icg->t[0].ftype[ci] != r_t)
error ("Field CMYK_C is wrong type");
if ((mi = icg->find_field(icg, 0, "CMYK_M")) < 0)
error ("Input file doesn't contain field CMYK_M");
if (icg->t[0].ftype[mi] != r_t)
error ("Field CMYK_M is wrong type");
if ((yi = icg->find_field(icg, 0, "CMYK_Y")) < 0)
error ("Input file doesn't contain field CMYK_Y");
if (icg->t[0].ftype[yi] != r_t)
error ("Field CMYK_Y is wrong type");
if ((ki = icg->find_field(icg, 0, "CMYK_K")) < 0)
error ("Input file doesn't contain field CMYK_K");
if (icg->t[0].ftype[ki] != r_t)
error ("Field CMYK_K is wrong type");
if ((Xi = icg->find_field(icg, 0, "XYZ_X")) < 0)
error ("Input file doesn't contain field XYZ_X");
if (icg->t[0].ftype[Xi] != r_t)
error ("Field XYZ_X is wrong type");
if ((Yi = icg->find_field(icg, 0, "XYZ_Y")) < 0)
error ("Input file doesn't contain field XYZ_Y");
if (icg->t[0].ftype[Yi] != r_t)
error ("Field XYZ_Y is wrong type");
if ((Zi = icg->find_field(icg, 0, "XYZ_Z")) < 0)
error ("Input file doesn't contain field XYZ_Z");
if (icg->t[0].ftype[Zi] != r_t)
error ("Field XYZ_Z is wrong type");
for (i = 0; i < ed.npat; i++) {
double XYZ[3];
ed.cols[i].c = *((double *)icg->t[0].fdata[i][ci]) / 100.0;
ed.cols[i].m = *((double *)icg->t[0].fdata[i][mi]) / 100.0;
ed.cols[i].y = *((double *)icg->t[0].fdata[i][yi]) / 100.0;
ed.cols[i].k = *((double *)icg->t[0].fdata[i][ki]) / 100.0;
XYZ[0] = *((double *)icg->t[0].fdata[i][Xi]) / 100.0;
XYZ[1] = *((double *)icg->t[0].fdata[i][Yi]) / 100.0;
XYZ[2] = *((double *)icg->t[0].fdata[i][Zi]) / 100.0;
icmXYZ2Lab(&icmD50, ed.cols[i].Lab, XYZ);
}
/* Initialise the model */
ed.gam[0] = 1.0; /* First four are CMYK gamma values */
ed.gam[1] = 1.0;
ed.gam[2] = 1.0;
ed.gam[3] = 1.0;
/* Initialise interpolation end points for each combination of primary, */
/* with all combinations close to black being represented by param[7]. */
ed.k[0][0] = .82; ed.k[1][0] = .83; ed.k[2][0] = .75; /* White */
ed.k[0][1] = .66; ed.k[1][1] = .72; ed.k[2][1] = .05; /* Y */
ed.k[0][2] = .27; ed.k[1][2] = .12; ed.k[2][2] = .06; /* M */
ed.k[0][3] = .27; ed.k[1][3] = .12; ed.k[2][3] = .00; /* MY */
ed.k[0][4] = .09; ed.k[1][4] = .13; ed.k[2][4] = .44; /* C */
ed.k[0][5] = .03; ed.k[1][5] = .10; ed.k[2][5] = .04; /* C Y */
ed.k[0][6] = .02; ed.k[1][6] = .01; ed.k[2][6] = .05; /* CM */
ed.k[0][7] = .01; ed.k[1][7] = .01; ed.k[2][7] = .01; /* Black */
sarea = 0.3;
presid = dresid = 100.0;
for (k=0; /* dresid > 0.0001 && */ k < 40; k++) { /* Untill we're done */
double sresid;
double sr[8];
double p[8];
/* Adjust the gamma */
for (i = 0; i < 4; i++)
sr[i] = 0.1; /* Device space search radius */
if (powell(&resid[3], 4, &ed.gam[0], sr, 0.1, 1000, efunc1, (void *)&ed, NULL, NULL) != 0)
error ("Powell failed");
/* Adjust the primaries */
calc_bc(&ed); /* Calculate blend coefficients */
for (i = 0; i < 8; i++)
sr[i] = 0.2; /* Device space search radius */
sresid = 99.0;
for (j = 0; j < 3; j++) { /* For each of X, Y and Z */
ed.xyzi = j;
for (i = 0; i < 8; i++)
p[i] = ed.k[j][i];
printf("##############\n");
printf("XYZ = %d\n",j);
if (powell(&resid[j], 8, p, sr, 0.1, 1000, efunc2, (void *)&ed, NULL, NULL) != 0)
error ("Powell failed");
for (i = 0; i < 8; i++)
ed.k[j][i] = p[i];
if (sresid > resid[j])
sresid = resid[j];
}
dresid = presid - sresid;
if (dresid < 0.0)
dresid = 100.0;
presid = sresid;
printf("~1 presid = %f, sresid = %f, dresid = %f\n",presid, sresid, dresid);
}
/* Fields we want */
ocg->add_kword(ocg, 0, "DSPACE","CMYK", NULL);
ocg->add_kword(ocg, 0, "DTYPE","PRINTER", NULL);
ocg->add_field(ocg, 0, "PARAM_ID", i_t);
ocg->add_field(ocg, 0, "PARAM", r_t);
/* Output model parameters */
for (j = 0; j < 4; j++)
ocg->add_set(ocg, 0, j, ed.gam[j]);
for (j = 0; j < 3; j++) {
for (i = 0; i < 8; i++)
ocg->add_set(ocg, 0, 10 * (j + 1) + i, 100.0 * ed.k[j][i]);
}
if (verb) {
double aver = 0.0;
double maxer = 0.0;
for (i = 0; i < ed.npat; i++) {
double err = sqrt(ed.cols[i].err);
if (err > maxer)
maxer = err;
aver += err;
}
aver = aver/((double)i);
printf("Average fit error = %f, maximum = %f\n",aver,maxer);
}
} else if (strcmp(icg->t[0].kdata[ti],"RGB") == 0) {
error ("We can't handle RGB !");
} else if (strcmp(icg->t[0].kdata[ti],"W") == 0) {
error ("We can't handle Grey !");
} else
error ("Input file keyword COLOR_REPS has unknown value");
if (ocg->write_name(ocg, outname))
error("Write error : %s",ocg->err);
free(ed.cols);
ocg->del(ocg); /* Clean up */
icg->del(icg); /* Clean up */
return 0;
}