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v3.5.0-ICCery.1.0
argyllcms/xicc/tiffgmts.c
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gronod 45bdf51201 Initial commit of v3.5.0
2026-08-20 20:28:40 +01:00

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/*
* Create a gamut mapping locus set from a TIFF file.
*
* Author: Graeme W. Gill
* Date: 08/10/14
* Version: 1.00
*
* Copyright 2000, 2008 Graeme W. Gill
* All rights reserved.
* This material is licenced under the GNU AFFERO GENERAL PUBLIC LICENSE Version 3 :-
* see the License.txt file for licencing details.
*
* Derived from tiffgamut.c
*
* This program creates a locus of test values that spans the
* volume of colors ocupied by the pixels of the TIFF file.
* The direction that spans the greatest distance is
* turned into a line of source test points, that can
* then be used by gammap to illustrate how the gamut mapping
* alters the locus.
*/
/*
* TTBD:
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <fcntl.h>
#include <string.h>
#include <math.h>
#include "copyright.h"
#include "aconfig.h"
#include "numlib.h"
#include "tiffio.h"
#include "icc.h"
#include "cgats.h"
#include "gamut.h"
#include "conv.h"
#include "xicc.h"
#include "vrml.h"
#include "sort.h"
#define DE_SPACE 3 /* Delta E of spacing for output points */
#undef DEBUG_PLOT
void usage(void) {
int i;
fprintf(stderr,"Create locus of test points that spans the range of colors a TIFF, Version %s\n",ARGYLL_VERSION_STR);
fprintf(stderr,"Author: Graeme W. Gill, licensed under the AGPL Version 3\n");
fprintf(stderr,"usage: tiffgmts [-v level] [profile.icm | embedded.tif] infile.tif\n");
fprintf(stderr," -v Verbose\n");
fprintf(stderr," -w emit %s %s file as well as CGATS .ts file\n",vrml_format(),vrml_ext());
fprintf(stderr," -n Don't add %s axes or white/black point\n",vrml_format());
fprintf(stderr," -i intent p = perceptual, r = relative colorimetric,\n");
fprintf(stderr," s = saturation, a = absolute (default), d = profile default\n");
// fprintf(stderr," P = absolute perceptual, S = absolute saturation\n");
fprintf(stderr," -p oride l = Lab_PCS (default), j = %s Appearance Jab\n",icxcam_description(cam_default));
fprintf(stderr," -o order n = normal (priority: lut > matrix > monochrome)\n");
fprintf(stderr," r = reverse (priority: monochrome > matrix > lut)\n");
fprintf(stderr," -c viewcond set appearance mode and viewing conditions for %s,\n",icxcam_description(cam_default));
fprintf(stderr," either an enumerated choice, or a parameter:value changes\n");
for (i = 0; ; i++) {
icxViewCond vc;
if (xicc_enum_viewcond(NULL, &vc, i, NULL, 1, NULL) == -999)
break;
fprintf(stderr," %s\n",vc.desc);
}
fprintf(stderr," s:surround a = average, m = dim, d = dark,\n");
fprintf(stderr," c = transparency (default average)\n");
fprintf(stderr," w:X:Y:Z Adapted white point as XYZ (default media white)\n");
fprintf(stderr," w:x:y Adapted white point as x, y\n");
fprintf(stderr," a:adaptation Adaptation luminance in cd.m^2 (default 50.0)\n");
fprintf(stderr," b:background Background %% of image luminance (default 20)\n");
fprintf(stderr," f:flare Flare light %% of image luminance (default 0)\n");
fprintf(stderr," g:glare Flare light %% of ambient (default 2)\n");
fprintf(stderr," g:X:Y:Z Flare color as XYZ (default media white, Abs: D50)\n");
fprintf(stderr," g:x:y Flare color as x, y\n");
fprintf(stderr," -V L,a,b Overide normal vector direction for span\n");
fprintf(stderr," -O outputfile Override the default output filename (locus.ts)\n");
fprintf(stderr," infile.tif File to create test value from\n");
exit(1);
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
/* Conversion functions from direct binary 0..n^2-1 == 0.0 .. 1.0 range */
/* to ICC luo input range. */
/* It is assumed that the binary has been sign corrected to be */
/* contiguous (ie CIELab). */
/* TIFF 8 bit CIELAB to standard L*a*b* */
/* Assume that a & b have been converted from signed to offset */
static void cvt_CIELAB8_to_Lab(double *out, double *in) {
out[0] = in[0] * 100.0;
out[1] = in[1] * 255.0 - 128.0;
out[2] = in[2] * 255.0 - 128.0;
}
/* TIFF 16 bit CIELAB to standard L*a*b* */
/* Assume that a & b have been converted from signed to offset */
static void cvt_CIELAB16_to_Lab(double *out, double *in) {
out[0] = in[0] * 100.0;
out[1] = (in[1] - 32768.0/65535.0) * 256.0;
out[2] = (in[2] - 32768.0/65535.0) * 256.0;
}
/* TIFF 8 bit ICCLAB to standard L*a*b* */
static void cvt_ICCLAB8_to_Lab(double *out, double *in) {
out[0] = in[0] * 100.0;
out[1] = (in[1] * 255.0) - 128.0;
out[2] = (in[2] * 255.0) - 128.0;
}
/* TIFF 16 bit ICCLAB to standard L*a*b* */
static void cvt_ICCLAB16_to_Lab(double *out, double *in) {
out[0] = in[0] * (100.0 * 65535.0)/65280.0;
out[1] = (in[1] * (255.0 * 65535.0)/65280) - 128.0;
out[2] = (in[2] * (255.0 * 65535.0)/65280) - 128.0;
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
/* Convert a TIFF Photometric tag to an ICC colorspace. */
/* return 0 if not possible or applicable. */
icColorSpaceSignature
TiffPhotometric2ColorSpaceSignature(
void (**icvt)(double *out, double *in), /* Return read conversion function, NULL if none */
int *smsk, /* Return signed handling mask, 0x0 if none */
int pmtc, /* Input TIFF photometric */
int bps, /* Input Bits per sample */
int spp, /* Input Samples per pixel */
int extra /* Extra Samples per pixel, if any */
) {
if (icvt != NULL)
*icvt = NULL; /* Default return values */
if (smsk != NULL)
*smsk = 0x0;
switch (pmtc) {
case PHOTOMETRIC_MINISWHITE: /* Subtractive Gray */
return icSigGrayData;
case PHOTOMETRIC_MINISBLACK: /* Additive Gray */
return icSigGrayData;
case PHOTOMETRIC_RGB:
return icSigRgbData;
case PHOTOMETRIC_PALETTE:
return 0x0;
case PHOTOMETRIC_MASK:
return 0x0;
case PHOTOMETRIC_SEPARATED:
/* Should look at the colorant names to figure out if this is CMY, CMYK */
/* Should at least return both Cmy/3 or Cmyk/4 ! */
switch(spp) {
case 2:
return icSig2colorData;
case 3:
// return icSig3colorData;
return icSigCmyData;
case 4:
// return icSig4colorData;
return icSigCmykData;
case 5:
return icSig5colorData;
case 6:
return icSig6colorData;
case 7:
return icSig7colorData;
case 8:
return icSig8colorData;
case 9:
return icSig9colorData;
case 10:
return icSig10colorData;
case 11:
return icSig11colorData;
case 12:
return icSig12colorData;
case 13:
return icSig13colorData;
case 14:
return icSig14colorData;
case 15:
return icSig15colorData;
}
case PHOTOMETRIC_YCBCR:
return icSigYCbCrData;
case PHOTOMETRIC_CIELAB:
if (bps == 8) {
if (icvt != NULL)
*icvt = cvt_CIELAB8_to_Lab;
} else {
if (icvt != NULL)
*icvt = cvt_CIELAB16_to_Lab;
}
*smsk = 0x6; /* Treat a & b as signed */
return icSigLabData;
case PHOTOMETRIC_ICCLAB:
if (bps == 8) {
if (icvt != NULL)
*icvt = cvt_ICCLAB8_to_Lab;
} else {
if (icvt != NULL)
*icvt = cvt_ICCLAB16_to_Lab;
}
return icSigLabData;
case PHOTOMETRIC_ITULAB:
return 0x0; /* Could add this with a conversion function */
/* but have to allow for variable ITU gamut */
/* (Tag 433, "Decode") */
case PHOTOMETRIC_LOGL:
return 0x0; /* Could add this with a conversion function */
case PHOTOMETRIC_LOGLUV:
return 0x0; /* Could add this with a conversion function */
}
return 0x0;
}
char *
Photometric2str(
int pmtc
) {
static char buf[80];
switch (pmtc) {
case PHOTOMETRIC_MINISWHITE:
return "Subtractive Gray";
case PHOTOMETRIC_MINISBLACK:
return "Additive Gray";
case PHOTOMETRIC_RGB:
return "RGB";
case PHOTOMETRIC_PALETTE:
return "Indexed";
case PHOTOMETRIC_MASK:
return "Transparency Mask";
case PHOTOMETRIC_SEPARATED:
return "Separated";
case PHOTOMETRIC_YCBCR:
return "YCbCr";
case PHOTOMETRIC_CIELAB:
return "CIELab";
case PHOTOMETRIC_ICCLAB:
return "ICCLab";
case PHOTOMETRIC_ITULAB:
return "ITULab";
case PHOTOMETRIC_LOGL:
return "CIELog2L";
case PHOTOMETRIC_LOGLUV:
return "CIELog2Luv";
}
sprintf(buf,"Unknown Photometric Tag %d",pmtc);
return buf;
}
void set_fminmax(double min[3], double max[3]);
void reset_filter();
void add_fpixel(double val[3]);
int flush_filter(int verb, double filtperc);
void get_filter(co *inp);
void del_filter();
int
main(int argc, char *argv[]) {
int fa,nfa; /* argument we're looking at */
static char prof_name[MAXNAMEL+1] = { '\000' }; /* ICC profile name, "" if none */
static char in_name[MAXNAMEL+1]; /* TIFF input file */
static 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;
icmErr err = { 0, { '\000'} };
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 % overide */
double vc_g = -1.0; /* Glare % overide */
double vc_gXYZ[3] = {-1.0, -1.0, -1.0}; /* Glare color override in XYZ */
double vc_gxy[2] = {-1.0, -1.0}; /* Glare 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') {
vc_f = atof(na+2);
usage();
} else if (na[0] == 'g' || na[0] == 'G') {
double x, y, z;
if (sscanf(na+1,":%lf:%lf:%lf",&x,&y,&z) == 3) {
vc_gXYZ[0] = x; vc_gXYZ[1] = y; vc_gXYZ[2] = z;
} else if (sscanf(na+1,":%lf:%lf",&x,&y) == 2) {
vc_gxy[0] = x; vc_gxy[1] = y;
} else if (sscanf(na+1,":%lf",&x) == 1) {
vc_g = x;
} else
usage();
} else
usage();
}
/* VRML/X3D 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(&err, stdout)) == NULL)
error ("Can't open stdout (0x%x, '%s')",err.c,err.m);
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->e.c, xicco->e.m);
if (vc_e != -1)
if (xicc_enum_viewcond(xicco, &vc, vc_e, NULL, 0, NULL) == -999)
error ("%d, %s",xicco->e.c, xicco->e.m);
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_g >= 0.0)
vc.Yg = vc_g/100.0;
if (vc_gXYZ[1] > 0.0) {
/* Normalise it to current media white */
vc.Gxyz[0] = vc_gXYZ[0]/vc_gXYZ[1] * vc.Gxyz[1];
vc.Gxyz[2] = vc_gXYZ[2]/vc_gXYZ[1] * vc.Gxyz[1];
}
if (vc_gxy[0] >= 0.0) {
double x = vc_gxy[0];
double y = vc_gxy[1]; /* If Y == 1.0, then X+Y+Z = 1/y */
double z = 1.0 - x - y;
vc.Gxyz[0] = x/y * vc.Gxyz[1];
vc.Gxyz[2] = z/y * vc.Gxyz[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->e.c, xicco->e.m);
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(icmColorSpaceSig, 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(icmColorSpaceSig,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(icmColorSpaceSig,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->e.c,icco->e.m);
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->e.m);
}
/* Create the VRML/X3D file */
if (dovrml) {
vrml *vv;
xl[0] = '\000'; /* remove extension */
printf("Output %s file '%s%s'\n",vrml_format(),out_name,vrml_ext());
if ((vv = new_vrml(out_name, doaxes, 0)) == NULL)
error ("Creating %s object %s%s failed",vrml_format(),out_name,vrml_ext());
#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); /* Write file */
}
free(outp);
}
rr->del(rr);
return 0;
}
/* ------------------------------------------ */
/* A pixel value filter module. We quantize the pixel values and keep statistics */
/* on them, so as to filter out low frequency colors. */
#define FILTBITS 5 /* Total = 2 ^ (3 * FILTBITS) entries = 33Mbytes*/
#define FILTSIZE (1 << FILTBITS)
/* A filtered cell entry */
typedef struct {
int count; /* Count of pixels that fall in this cell */
float pcs[3]; /* Sum of PCS value that fall in this cell */
} fent;
struct _ffilter {
double min[3], max[3]; /* PCS range */
double filtperc;
int used;
fent cells[FILTSIZE][FILTSIZE][FILTSIZE]; /* Quantized pixels stats */
fent *scells[FILTSIZE * FILTSIZE * FILTSIZE]; /* Sorted order */
}; typedef struct _ffilter ffilter;
/* Use a global object */
ffilter *ff = NULL;
/* Set the min and max values and init the filter */
void set_fminmax(double min[3], double max[3]) {
if (ff == NULL) {
if ((ff = (ffilter *) calloc(1,sizeof(ffilter))) == NULL)
error("ffilter: calloc failed");
}
ff->min[0] = min[0];
ff->min[1] = min[1];
ff->min[2] = min[2];
ff->max[0] = max[0];
ff->max[1] = max[1];
ff->max[2] = max[2];
}
/* Add another pixel to the filter */
void add_fpixel(double val[3]) {
int j;
int qv[3];
fent *fe;
double cent[3] = { 50.0, 0.0, 0.0 }; /* Assumed center */
double tt, cdist, ndist;
if (ff == NULL)
error("ffilter not initialized");
/* Quantize the values */
for (j = 0; j < 3; j++) {
double vv;
vv = (val[j] - ff->min[j])/(ff->max[j] - ff->min[j]);
qv[j] = (int)(vv * (FILTSIZE - 1) + 0.5);
}
//printf("~1 color %f %f %f -> Cell %d %d %d\n", val[0], val[1], val[2], qv[0], qv[1], qv[2]);
/* Find the appropriate cell */
fe = &ff->cells[qv[0]][qv[1]][qv[2]];
fe->pcs[0] += val[0];
fe->pcs[1] += val[1];
fe->pcs[2] += val[2];
//printf("Updated pcs to %f %f %f\n", val[0],val[1],val[2]);
fe->count++;
//printf("Cell count = %d\n",fe->count);
}
/* Flush the filter contents, and return the number of filtered values */
int flush_filter(int verb, double filtperc) {
int i, j;
int totcells = FILTSIZE * FILTSIZE * FILTSIZE;
int used, hasone;
double cuml, avgcnt;
if (ff == NULL)
error("ffilter not initialized");
/* Sort the cells by popularity from most to least */
for (used = hasone = avgcnt = i = 0; i < totcells; i++) {
ff->scells[i] = (fent *)ff->cells + i;
if (ff->scells[i]->count > 0) {
used++;
if (ff->scells[i]->count == 1)
hasone++;
avgcnt += ff->scells[i]->count;
}
}
avgcnt /= used;
#define HEAP_COMPARE(A,B) A->count > B->count
HEAPSORT(fent *,ff->scells, totcells)
if (verb) {
printf("Total of %d cells out of %d were hit (%.1f%%)\n",used,totcells,used * 100.0/totcells);
printf("%.1f%% have a count of 1\n",hasone * 100.0/used);
printf("Average cell count = %f\n",avgcnt);
printf("\n");
}
/* Add the populated cells in order */
filtperc /= 100.0;
for (cuml = 0.0, i = j = 0; cuml < filtperc && i < totcells; i++) {
if (ff->scells[i]->count > 0) {
double val[3];
ff->scells[i]->pcs[0] /= ff->scells[i]->count;
ff->scells[i]->pcs[1] /= ff->scells[i]->count;
ff->scells[i]->pcs[2] /= ff->scells[i]->count;
j++;
cuml = j/(used-1.0);
}
}
ff->used = used;
ff->filtperc = filtperc;
return j;
}
/* Add the points to the array */
void get_filter(co *inp) {
int i, j;
int totcells = FILTSIZE * FILTSIZE * FILTSIZE;
double cuml, filtperc;
int used;
used = ff->used;
filtperc = ff->filtperc;
for (cuml = 0.0, i = j = 0; cuml < filtperc && i < totcells; i++) {
if (ff->scells[i]->count > 0) {
double val[3];
inp[j].v[0] = ff->scells[i]->pcs[0]; /* float -> double */
inp[j].v[1] = ff->scells[i]->pcs[1];
inp[j].v[2] = ff->scells[i]->pcs[2];
//printf("~1 adding %f %f %f to gamut\n", val[0], val[1], val[2]);
j++;
cuml = j/(used-1.0);
}
}
}
/* Free up the filter structure */
void del_filter() {
free(ff);
}
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