int main (int argc, char *argv[]) {
FILE *anafp;
char in1root[MAXL];
char in2root[MAXL];
char outroot[MAXL];
char imgfile[MAXL];
char program[MAXL], string[MAXL], *ptr;
struct dsr hdr;
short *img1, *img2, *imgo;
int xdim, ydim, zdim, dimension;
int img1max = 0, img2max = 0;
int img1min = 0, img2min = 0;
int swab_img1 = 0, swab_img2 = 0, swab_imgo = 0;
char orient, control = '\0';
int nbin = NBIN;
int *hist, *mrg1, *mrg2;
int histmax = 0;
int range1, range2;
int binwid1, binwid2;
int grid1, grid2;
short valmax = 0;
float ftmp;
int c, i, j, k;
/*********/
/* flags */
/*********/
int status = 0;
int debug = 0;
int do_grid = 1;
if (ptr = strrchr (argv[0], '/')) ptr++; else ptr = argv[0];
strcpy (program, ptr);
printf ("%s\n", rcsid);
/************************/
/* process command line */
/************************/
for (k = 0, i = 1; i < argc; i++) if (*argv[i] == '-') {
strcpy (string, argv[i]); ptr = string;
while (c = *ptr++) switch (c) {
case 'd': debug++; break;
case 'g': do_grid = 0; break;
case '@': control = *ptr++; *ptr = '\0'; break;
case 'r': j = atoi (ptr++);
ptr++; /* skip over ":" */
switch (j) {
case 1: getrangei (ptr, &img1min, &img1max); break;
case 2: getrangei (ptr, &img2min, &img2max); break;
default: usage (program); break;
} *ptr = '\0'; break;
}
} else switch (k) {
case 0: getroot (argv[i], in1root); k++; break;
case 1: getroot (argv[i], in2root); k++; break;
case 2: getroot (argv[i], outroot); k++; break;
}
if (k < 3) usage (program);
fprintf (stdout, "img1: %s\nimg2: %s\n", in1root, in2root);
sprintf (imgfile, "%s.hdr", in1root);
if (!(anafp = fopen (imgfile, "rb")) || fread (&hdr, sizeof (struct dsr), 1, anafp) != 1
|| fclose (anafp)) errr (program, imgfile);
if (hdr.hk.sizeof_hdr != sizeof (struct dsr)) {
printf ("converting %s byte order\n", in1root);
swab_hdr (&hdr);
swab_img1++;
}
if (hdr.dime.bitpix != 16) erri (program, imgfile);
xdim = hdr.dime.dim[1];
ydim = hdr.dime.dim[2];
zdim = hdr.dime.dim[3];
orient = hdr.hist.orient;
dimension = xdim * ydim * zdim;
sprintf (imgfile, "%s.hdr", in2root);
if (!(anafp = fopen (imgfile, "rb")) || fread (&hdr, sizeof (struct dsr), 1, anafp) != 1
|| fclose (anafp)) errr (program, imgfile);
if (hdr.hk.sizeof_hdr != sizeof (struct dsr)) {
printf ("converting %s byte order\n", in2root);
swab_hdr (&hdr);
swab_img2++;
}
if (hdr.dime.bitpix != 16) erri (program, imgfile);
if (xdim != hdr.dime.dim[1] || ydim != hdr.dime.dim[2] || zdim != hdr.dime.dim[3] || orient != hdr.hist.orient) {
fprintf (stderr, "%s: %s %s dimension/orientation mismatch\n", program, in1root, in2root);
exit (-1);
}
img1 = (short *) malloc (dimension * sizeof (short));
img2 = (short *) malloc (dimension * sizeof (short));
mrg1 = (int *) calloc (nbin, sizeof (int));
mrg2 = (int *) calloc (nbin, sizeof (int));
hist = (int *) calloc (nbin*nbin, sizeof (int));
imgo = (short *) malloc (nbin*nbin * sizeof (short));
if (!img1 || !img2 || !hist || !mrg1 || !mrg2 || !imgo) errm (program);
sprintf (imgfile, "%s.img", outroot); startrece (imgfile, argc, argv, rcsid, control);
sprintf (imgfile, "%s.img", in1root); catrec (imgfile);
printf ("Reading: %s\n", imgfile);
if (!(anafp = fopen (imgfile, "rb"))
|| fread (img1, sizeof (short), dimension, anafp) != dimension || fclose (anafp)) errr (program, imgfile);
if (swab_img1) for (i = 0; i < dimension; i++) swab2 ((char *) &img1[i]);
sprintf (imgfile, "%s.img", in2root); catrec (imgfile);
printf ("Reading: %s\n", imgfile);
if (!(anafp = fopen (imgfile, "rb"))
|| fread (img2, sizeof (short), dimension, anafp) != dimension || fclose (anafp)) errr (program, imgfile);
if (swab_img2) for (i = 0; i < dimension; i++) swab2 ((char *) &img2[i]);
if (!img1max && !img1min) {
img1max -32768; img1min = 32767;
for (i = 0; i < dimension; i++) {
if (img1[i] > img1max) img1max = img1[i];
if (img1[i] < img1min) img1min = img1[i];
}
} else {
for (i = 0; i < dimension; i++) {
if (img1[i] > img1max) img1[i] = img1max;
if (img1[i] < img1min) img1[i] = img1min;
}
}
range1 = img1max - img1min;
if (!img2max && !img2min) {
img2max -32768; img2min = 32767;
for (i = 0; i < dimension; i++) {
if (img2[i] > img2max) img2max = img2[i];
if (img2[i] < img2min) img2min = img2[i];
}
} else {
for (i = 0; i < dimension; i++) {
if (img2[i] > img2max) img2[i] = img2max;
if (img2[i] < img2min) img2[i] = img2min;
}
}
range2 = img2max - img2min;
fprintf (stdout, "img1: min=%6d\tmax=%6d\trange=%6d\n", img1min, img1max, range1);
fprintf (stdout, "img2: min=%6d\tmax=%6d\trange=%6d\n", img2min, img2max, range2);
sprintf (string, "before auto range adjust\n"); printrec (string);
sprintf (string, "img1: min=%6d\tmax=%6d\trange=%6d\n", img1min, img1max, range1); printrec (string);
sprintf (string, "img2: min=%6d\tmax=%6d\trange=%6d\n", img2min, img2max, range2); printrec (string);
for (i = 0; i < dimension; i++) {
k = (nbin * (img1[i] - img1min)) / range1;
if (k < nbin && k > 0) mrg1[k]++;
k = (nbin * (img2[i] - img2min)) / range2;
if (k < nbin && k > 0) mrg2[k]++;
}
for (k = 2; k < nbin; k++) {
mrg1[k] += mrg1[k - 1];
mrg2[k] += mrg2[k - 1];
}
if (debug) for (k = 0; k < nbin; k++) {
printf ("%6d %10.6f %10.6f\n", k,
(float) mrg1[k] / (float) mrg1[nbin - 1], (float) mrg2[k] / (float) mrg2[nbin - 1]);
}
for (i = 1; i < nbin; i++) if (((float) mrg1[i] / (float) mrg1[nbin - 1]) > CUM_D) break;
for (j = 1; j < nbin; j++) if (((float) mrg1[j] / (float) mrg1[nbin - 1]) > 1.0-CUM_D) break;
if (debug) printf ("img1: first_bin=%d\tlast_bin=%d\n", i, j);
img1min += (float) (range1 * i) / nbin;
range1 *= (float) (j - i) / nbin;
binwid1 = (float) range1 / nbin;
if (!binwid1) binwid1++;
range1 = binwid1 * nbin;
img1min += binwid1 - (img1min + range1) % binwid1;
for (i = 1; i < nbin; i++) if (((float) mrg2[i] / (float) mrg2[nbin - 1]) > CUM_D) break;
for (j = 1; j < nbin; j++) if (((float) mrg2[j] / (float) mrg2[nbin - 1]) > 1.0-CUM_D) break;
if (debug) printf ("img2: first_bin=%d\tlast_bin=%d\n", i, j);
img2min += (float) (range2 * i) / nbin;
range2 *= (float) (j - i) / nbin;
binwid2 = (float) range2 / nbin;
if (!binwid2) binwid2++;
range2 = binwid2 * nbin;
img2min += binwid2 - (img2min + range2) % binwid2;
fprintf (stdout, "img1: min=%6d\tmax=%6d\trange=%6d\tbinwidth=%d\n", img1min, img1min + range1, range1, binwid1);
fprintf (stdout, "img2: min=%6d\tmax=%6d\trange=%6d\tbinwidth=%d\n", img2min, img2min + range2, range2, binwid2);
sprintf (string, "after auto range adjust\n");
printrec (string);
sprintf (string, "img1: min=%6d\tmax=%6d\trange=%6d\tbinwidth=%d\n", img1min, img1min + range1, range1, binwid1);
printrec (string);
sprintf (string, "img2: min=%6d\tmax=%6d\trange=%6d\tbinwidth=%d\n", img2min, img2min + range2, range2, binwid2);
printrec (string);
if (!range1 || !range2) exit (-1);
for (k = 0; k < dimension; k++) {
i = (img1[k] - img1min) / binwid1;
j = (img2[k] - img2min) / binwid2;
if (i < 0 || i >= nbin || j < 0 || j >= nbin) continue;
hist[nbin * j + i]++;
if (!hist[nbin * j + i]) {
fprintf (stderr, "2Dhist: histogram bin overflow\n");
exit (-1);
}
if (hist[nbin * j + i] > histmax) histmax = hist[nbin * j + i];
}
fprintf (stdout, "maximum bin count=%d\n", histmax);
/***************************/
/* write histogram to imgo */
/***************************/
for (k = 0; k < nbin*nbin; k++) {
if (hist[k]) {
ftmp = 100 * log ((double) hist[k]);
imgo[k] = (short) ftmp;
} else imgo[k] = 0;
if (imgo[k] > valmax) valmax = imgo[k];
}
if (do_grid) {
grid1 = range1 / 10; grid1 /= 10; grid1 *= 10;
for (i = k = 0; i < nbin; k += grid1) {
i = (k - img1min) / binwid1;
if (i >= 0 && i < nbin) for (j = 0; j < nbin; j++) imgo[nbin * j + i] = valmax / 2;
}
sprintf (string, "img1: grid interval=%d\n", grid1); printrec (string);
grid2 = range2 / 10; grid2 /= 10; grid2 *= 10;
for (j = k = 0; j < nbin; k += grid2) {
j = (k - img2min) / binwid2;
if (j >= 0 && j < nbin) for (i = 0; i < nbin; i++) imgo[nbin * j + i] = valmax / 2;
}
sprintf (string, "img2: grid interval=%d\n", grid2); printrec (string);
}
swab_imgo = ((CPU_is_bigendian() != 0) && (control == 'l' || control == 'L'))
|| ((CPU_is_bigendian() == 0) && (control == 'b' || control == 'B'));
if (swab_imgo) for (i = 0; i < nbin*nbin; i++) swab2 ((char *) &imgo[i]);
sprintf (imgfile, "%s.img", outroot); fprintf (stdout, "Writing: %s\n", imgfile);
if (!(anafp = fopen (imgfile, "wb")) || fwrite (imgo, sizeof (short), nbin*nbin, anafp) != nbin*nbin
|| fclose (anafp)) errw (program, imgfile);
hdr.dime.dim[0] = 2;
hdr.dime.dim[1] = nbin;
hdr.dime.dim[2] = nbin;
hdr.dime.dim[3] = 1;
hdr.dime.datatype = 4;
hdr.dime.pixdim[1] = 1;
hdr.dime.pixdim[2] = 1;
hdr.dime.pixdim[3] = 1;
hdr.dime.glmax = valmax;
hdr.dime.glmin = 0;
hdr.hist.orient = 0;
if (swab_imgo) swab_hdr (&hdr);
sprintf (imgfile, "%s.hdr", outroot);
fprintf (stdout, "Writing: %s\n", imgfile);
if (!(anafp = fopen (imgfile, "wb"))
|| fwrite (&hdr, sizeof (struct dsr), 1, anafp) != 1 || fclose (anafp)) errw (program, imgfile);
free (img1); free (img2); free (imgo);
free (mrg1); free (mrg2);
free (hist);
endrec ();
exit (status);
}
int main (int argc, char *argv[]) {
/*******/
/* i/o */
/*******/
FILE *fpimg, *fpout;
IFH ifh;
struct dsr hdr; /* ANALYZE hdr */
char imgroot[MAXL], imgfile[MAXL], outfile[MAXL];
char trailer[8] = ".4dint";
/****************/
/* image arrays */
/****************/
float *imgf, cscale = 1.0;
short int *imgi=NULL;
unsigned char *imgu=NULL;
float voxsiz[3];
int imgdim[4], vdim, orient, isbig;
int imin = 32767, imax = -32768;
char control = '\0';
short int origin[3]; /* used in SPM99 conversions */
/***********/
/* utility */
/***********/
int c, i, j, k;
char *str, command[MAXL], program[MAXL];
/*********/
/* flags */
/*********/
int uchar = 0;
int debug = 0;
int spm99 = 0;
int swab_flag = 0;
fprintf (stdout, "%s\n", rcsid);
setprog (program, argv);
/************************/
/* process command line */
/************************/
for (k = 0, i = 1; i < argc; i++) {
if (*argv[i] == '-') {
strcpy (command, argv[i]); str = command;
while ((c = *str++)) switch (c) {
case '8': uchar++; strcpy (trailer, "_8bit"); break;
case 'd': debug++; break;
case 'c': cscale = atof (str); *str = '\0'; break;
case 'S': if (!strcmp (str, "PM99")) spm99++; *str = '\0'; break;
case '@': control = *str++; *str = '\0'; break;
}
} else switch (k) {
case 0: getroot (argv[i], imgroot); k++; break;
}
}
if (k < 1) {
printf ("Usage:\t%s <(4dfp) filename>\n", program);
printf ("\toption\n");
printf ("\t-c<flt>\tscale output values by specified factor\n");
printf ("\t-8\toutput 8 bit unsigned char\n");
printf ("\t-SPM99\tinclude origin and scale in hdr (http:/wideman-one.com/gw/brain/analyze/format.doc)\n");
printf ("\t-@<b|l>\toutput big or little endian (default CPU endian)\n");
exit (1);
}
/*****************************/
/* get input 4dfp dimensions */
/*****************************/
if (get_4dfp_dimoe (imgroot, imgdim, voxsiz, &orient, &isbig)) errr (program, imgroot);
vdim = imgdim[0] * imgdim[1] * imgdim[2];
if (uchar) {
if (!(imgu = (unsigned char *) malloc (vdim * sizeof (char)))) errm (program);
} else {
if (!(imgi = (short *) malloc (vdim * sizeof (short)))) errm (program);
}
if (!(imgf = (float *) malloc (vdim * sizeof (float)))) errm (program);
/*************************/
/* open input and output */
/*************************/
sprintf (imgfile, "%s.4dfp.img", imgroot);
printf ("Reading: %s\n", imgfile);
if (!(fpimg = fopen (imgfile, "rb"))) errr (program, imgfile);
sprintf (outfile, "%s%s.img", imgroot, trailer);
if (!(fpout = fopen (outfile, "wb"))) errw (program, outfile);
printf ("Writing: %s\n", outfile);
/**********************/
/* process all frames */
/**********************/
for (k = 0; k < imgdim[3]; k++) {
if (eread (imgf, vdim, isbig, fpimg)) errr (program, imgfile);
switch (orient) {
case 4: flipx (imgf, imgdim + 0, imgdim + 1, imgdim + 2); /* sagittal */
case 3: flipz (imgf, imgdim + 0, imgdim + 1, imgdim + 2); /* coronal */
case 2: flipy (imgf, imgdim + 0, imgdim + 1, imgdim + 2); /* transverse */
break;
default:
fprintf (stderr, "%s: %s image orientation not recognized\n", program, imgfile);
exit (-1);
break;
}
for (i = 0; i < vdim; i++) {
j = nint (cscale*imgf[i]);
if (debug) printf ("%10.6f%10d\n", imgf[i], j);
if (uchar) {
if (j < 0) j = 0;
if (j > 255) j = 255;
imgu[i] = j;
} else {
imgi[i] = j;
}
if (j > imax) imax = j;
if (j < imin) imin = j;
}
if (uchar) {
if (fwrite ( imgu, sizeof (char), vdim, fpout) != vdim) errw (program, outfile);
} else {
if (gwrite ((char *) imgi, sizeof (short), vdim, fpout, control)) errw (program, outfile);
}
}
fclose (fpimg);
fclose (fpout);
/**************************/
/* create ANALYZE 7.5 hdr */
/**************************/
Inithdr (&hdr, imgdim, voxsiz, "");
if (uchar) {
hdr.dime.datatype = 2; /* unsigned char */
hdr.dime.bitpix = 8;
} else {
hdr.dime.datatype = 4; /* signed integer */
hdr.dime.bitpix = 16;
}
hdr.dime.glmax = imax;
hdr.dime.glmin = imin;
hdr.hist.orient = orient - 2;
swab_flag = ((CPU_is_bigendian() != 0) && (control == 'l' || control == 'L'))
|| ((CPU_is_bigendian() == 0) && (control == 'b' || control == 'B'));
if (spm99) {
if (Getifh (imgroot, &ifh)) errr (program, imgroot);
for (i = 0; i < 3; i++) origin[i] = 0.4999 + ifh.center[i]/ifh.mmppix[i];
/*************************************************/
/* flip 4dfp->analyze assuming transverse orient */
/*************************************************/
origin[1] = imgdim[1] + 1 - origin[1];
/*******************************************************************/
/* origin field officially text and so not affected by swab_hdr () */
/*******************************************************************/
if (swab_flag) for (i = 0; i < 3; i++) swab2 ((char *) (origin + i));
memcpy ((char *) &hdr + 253, (char *) origin, 3*sizeof (short int));
memcpy ((char *) &hdr + 112, (char *) &cscale, sizeof (float));
hdr.hk.extents = 0;
}
if (swab_flag) swab_hdr (&hdr);
sprintf (outfile, "%s%s.hdr", imgroot, trailer);
printf ("Writing: %s\n", outfile);
if (!(fpout = fopen (outfile, "wb")) || fwrite (&hdr, sizeof (struct dsr), 1, fpout) != 1
|| fclose (fpout)) errw (program, outfile);
/*******************/
/* create rec file */
/*******************/
sprintf (outfile, "%s%s.img", imgroot, trailer);
startrece (outfile, argc, argv, rcsid, control);
sprintf (command, "Voxel values scaled by %f\n", cscale); printrec (command);
catrec (imgfile);
endrec ();
free (imgf);
if (uchar) {
free (imgu);
} else {
free (imgi);
}
exit (0);
}