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;
}
/* 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;
char out_name[1000];
icmFile *wr_fp;
icc *wr_icco;
int rv = 0;
int verb = 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' || argv[fa][1] == 'V') {
verb = 1;
}
else
usage();
}
else
break;
}
if (fa >= argc || argv[fa][0] == '-') usage();
strcpy(out_name,argv[fa]);
/* ---------------------------------------- */
/* Create a matrix/shaper based XYZ profile */
/* ---------------------------------------- */
/* Open up the file for writing */
if ((wr_fp = new_icmFileStd_name(out_name,"w")) == NULL)
error ("Write: Can't open file '%s'",out_name);
if ((wr_icco = new_icc()) == NULL)
error ("Write: Creation of ICC object failed");
/* Add all the tags required */
/* The header: */
{
icmHeader *wh = wr_icco->header;
/* Values that must be set before writing */
wh->deviceClass = icSigDisplayClass;
wh->colorSpace = icSigRgbData; /* It's RGB space */
wh->pcs = icSigXYZData;
wh->renderingIntent = icPerceptual;
/* Values that should be set before writing */
wh->manufacturer = str2tag("????");
wh->model = str2tag("????");
}
/* Profile Description Tag: */
{
icmTextDescription *wo;
char *dst;
dst = "sRGB like Matrix Display profile";
if ((wo = (icmTextDescription *)wr_icco->add_tag(
wr_icco, icSigProfileDescriptionTag, icSigTextDescriptionType)) == NULL)
error("add_tag failed: %d, %s",wr_icco->errc,wr_icco->err);
wo->size = strlen(dst)+1; /* Allocated and used size of desc, inc null */
wo->scCode = 0;
wo->scSize = strlen(dst)+1;
if (wo->scSize > 67)
error("Description scriptCode string longer than 67");
wo->allocate((icmBase *)wo);/* Allocate space */
strcpy(wo->desc, dst); /* Copy the string in */
strcpy((char *)wo->scDesc, dst); /* Copy the string in */
}
/* Copyright Tag: */
{
icmText *wo;
char *crt = "Copyright tag goes here";
if ((wo = (icmText *)wr_icco->add_tag(
wr_icco, icSigCopyrightTag, icSigTextType)) == NULL)
error("add_tag failed: %d, %s",wr_icco->errc,wr_icco->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 */
}
/* Could add other relevant tags here, such as:
Device Manufacturers Description Tag
Device Model Description Tag
Device technology Tag
Viewing conditions Description Tag
Viewing conditions
Display Luminance Tag
Measurement information Tag
etc.
*/
/* Setup the primaries */
{
/* Compute primaries as XYZ */
double wrgb[4][3] = { /* Primaries in Yxy from the standard */
{ 1.0, 0.3127, 0.3290 }, /* White */
{ 1.0, 0.6400, 0.3300 }, /* Red */
{ 1.0, 0.3000, 0.6000 }, /* Green */
{ 1.0, 0.1500, 0.0600 } /* Blue */
};
double mat[3][3];
int i;
/* Convert yxy to normalised 3x3 matrix */
icmRGBYxyprim2matrix(wrgb[1], wrgb[2], wrgb[3], wrgb[0], mat, wrgb[0]);
icmTranspose3x3(mat, mat);
#ifdef NEVER /* Dump XYZ */
printf("sRGB: XYZ\n");
printf("{ %f, %f, %f }, /* Red */\n"
"{ %f, %f, %f }, /* Green */\n"
"{ %f, %f, %f }, /* Blue */\n"
"{ %f, %f, %f } /* White */\n",
mat[0][0], mat[0][1], mat[0][2],
mat[1][0], mat[1][1], mat[1][2],
mat[2][0], mat[2][1], mat[2][2],
wrgb[0][0], wrgb[0][1], wrgb[0][2]);
#endif
#ifdef NEVER /* Dump xyz */
{
double mat2[4][3];
double tt;
for (i = 0; i < 3; i++) {
tt = mat[i][0] + mat[i][1] + mat[i][2];
mat2[i][0] = mat[i][0] / tt;
mat2[i][1] = mat[i][1] / tt;
mat2[i][2] = mat[i][2] / tt;
}
tt = wrgb[0][0] + wrgb[0][1] + wrgb[0][2];
mat2[i][0] = wrgb[0][0] / tt;
mat2[i][1] = wrgb[0][1] / tt;
mat2[i][2] = wrgb[0][2] / tt;
printf("sRGB: xyz\n");
printf("{ %f, %f, %f }, /* Red */\n"
"{ %f, %f, %f }, /* Green */\n"
"{ %f, %f, %f }, /* Blue */\n"
"{ %f, %f, %f } /* White */\n",
mat2[0][0], mat2[0][1], mat2[0][2],
mat2[1][0], mat2[1][1], mat2[1][2],
mat2[2][0], mat2[2][1], mat2[2][2],
mat2[3][0], mat2[3][1], mat2[3][2]);
}
#endif
/* White Point Tag: */
{
icmXYZArray *wo;
if ((wo = (icmXYZArray *)wr_icco->add_tag(
wr_icco, icSigMediaWhitePointTag, icSigXYZArrayType)) == NULL)
error("add_tag failed: %d, %s",wr_icco->errc,wr_icco->err);
wo->size = 1;
wo->allocate((icmBase *)wo); /* Allocate space */
wo->data[0].X = wrgb[0][0];
wo->data[0].Y = wrgb[0][1];
wo->data[0].Z = wrgb[0][2];
}
/* Black Point Tag: */
{
icmXYZArray *wo;
if ((wo = (icmXYZArray *)wr_icco->add_tag(
wr_icco, icSigMediaBlackPointTag, icSigXYZArrayType)) == NULL)
error("add_tag failed: %d, %s",wr_icco->errc,wr_icco->err);
wo->size = 1;
wo->allocate((icmBase *)wo); /* Allocate space */
wo->data[0].X = 0.00;
wo->data[0].Y = 0.00;
wo->data[0].Z = 0.00;
}
/* Red, Green and Blue Colorant Tags: */
{
icmXYZNumber white;
icmXYZArray *wor, *wog, *wob;
double fromAbs[3][3];
double d50m[3][3];
/* Convert to D50 adapated */
icmAry2XYZ(white, wrgb[0]);
wr_icco->chromAdaptMatrix(wr_icco, ICM_CAM_NONE, icmD50, white, fromAbs);
icmMulBy3x3(d50m[0], fromAbs, mat[0]);
icmMulBy3x3(d50m[1], fromAbs, mat[1]);
icmMulBy3x3(d50m[2], fromAbs, mat[2]);
/* Make sure rounding doesn't wreck white point */
quantizeRGBprimsS15Fixed16(d50m);
if ((wor = (icmXYZArray *)wr_icco->add_tag(
wr_icco, icSigRedColorantTag, icSigXYZArrayType)) == NULL)
error("add_tag failed: %d, %s",rv,wr_icco->err);
if ((wog = (icmXYZArray *)wr_icco->add_tag(
wr_icco, icSigGreenColorantTag, icSigXYZArrayType)) == NULL)
error("add_tag failed: %d, %s",rv,wr_icco->err);
if ((wob = (icmXYZArray *)wr_icco->add_tag(
wr_icco, icSigBlueColorantTag, icSigXYZArrayType)) == NULL)
error("add_tag failed: %d, %s",rv,wr_icco->err);
wor->size = wog->size = wob->size = 1;
wor->allocate((icmBase *)wor); /* Allocate space */
wog->allocate((icmBase *)wog);
wob->allocate((icmBase *)wob);
wor->data[0].X = d50m[0][0]; wor->data[0].Y = d50m[0][1]; wor->data[0].Z = d50m[0][2];
wog->data[0].X = d50m[1][0]; wog->data[0].Y = d50m[1][1]; wog->data[0].Z = d50m[1][2];
wob->data[0].X = d50m[2][0]; wob->data[0].Y = d50m[2][1]; wob->data[0].Z = d50m[2][2];
}
}
/* Red, Green and Blue Gamma Curve Tags: */
{
icmCurve *wor, *wog, *wob;
int i;
if ((wor = (icmCurve *)wr_icco->add_tag(
wr_icco, icSigRedTRCTag, icSigCurveType)) == NULL)
error("add_tag failed: %d, %s",rv,wr_icco->err);
wor->flag = icmCurveSpec;
wor->size = 1024;
wor->allocate((icmBase *)wor); /* Allocate space */
for (i = 0; i < wor->size; i++)
wor->data[i] = gdv2dv(i/(wor->size-1.0));
/* Link other channels to the red */
if ((wog = (icmCurve *)wr_icco->link_tag(
wr_icco, icSigGreenTRCTag, icSigRedTRCTag)) == NULL)
error("link_tag failed: %d, %s",rv,wr_icco->err);
if ((wob = (icmCurve *)wr_icco->link_tag(
wr_icco, icSigBlueTRCTag, icSigRedTRCTag)) == NULL)
error("link_tag failed: %d, %s",rv,wr_icco->err);
}
/* Write the file out */
if ((rv = wr_icco->write(wr_icco,wr_fp,0)) != 0)
error ("Write file: %d, %s",rv,wr_icco->err);
wr_icco->del(wr_icco);
wr_fp->del(wr_fp);
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;
}
