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-rw-r--r--profile/colverify.c1024
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diff --git a/profile/colverify.c b/profile/colverify.c
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+/*
+ * Argyll Color Correction System
+ * Verify two sets of PCS values.
+ *
+ * Author: Graeme W. Gill
+ * Date: 7/6/2005
+ *
+ * Copyright 2005 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.
+ */
+
+/*
+ * This program takes in two CGATS files (probably but not necesserily .ti3 files) of PCS
+ * values (either XYZ, L*a*b* or spectral), matches the values, and computes
+ * overall errors. This is useful for verifying proofing systems.
+ */
+
+/*
+ * TTBD:
+ */
+
+#undef DEBUG
+
+#define verbo stdout
+
+#include <stdio.h>
+#include <string.h>
+#if defined(__IBMC__)
+#include <float.h>
+#endif
+#include "copyright.h"
+#include "aconfig.h"
+#include "numlib.h"
+#include "vrml.h"
+#include "cgats.h"
+#include "xicc.h"
+#include "ccmx.h"
+#include "insttypes.h"
+#include "sort.h"
+
+void
+usage(void) {
+ fprintf(stderr,"Verify CIE values, Version %s\n",ARGYLL_VERSION_STR);
+ fprintf(stderr,"Author: Graeme W. Gill, licensed under the AGPL Version 3\n");
+ fprintf(stderr,"usage: verify [-options] target.ti3 measured.ti3\n");
+ fprintf(stderr," -v [n] Verbose mode, n >= 2 print each value\n");
+ fprintf(stderr," -n Normalise each files reading to its white Y\n");
+ fprintf(stderr," -N Normalise each files reading to its white XYZ\n");
+ fprintf(stderr," -m Normalise each files reading to its white X+Y+Z\n");
+ fprintf(stderr," -D Use D50 100.0 as L*a*b* white reference\n");
+ fprintf(stderr," -c Show CIE94 delta E values\n");
+ fprintf(stderr," -k Show CIEDE2000 delta E values\n");
+ fprintf(stderr," -s Sort patch values by error\n");
+ fprintf(stderr," -w create VRML vector visualisation (measured.wrl)\n");
+ fprintf(stderr," -W create VRML marker visualisation (measured.wrl)\n");
+ fprintf(stderr," -x Use VRML axes\n");
+ fprintf(stderr," -f [illum] Use Fluorescent Whitening Agent compensation [opt. simulated inst. illum.:\n");
+ fprintf(stderr," M0, M1, M2, A, C, D50 (def.), D50M2, D65, F5, F8, F10 or file.sp]\n");
+ fprintf(stderr," -i illum Choose illuminant for computation of CIE XYZ from spectral data & FWA:\n");
+ fprintf(stderr," A, C, D50 (def.), D50M2, D65, F5, F8, F10 or file.sp\n");
+ fprintf(stderr," -o observ Choose CIE Observer for spectral data:\n");
+ fprintf(stderr," 1931_2 (def), 1964_10, S&B 1955_2, shaw, J&V 1978_2\n");
+ fprintf(stderr," -L profile.%s Skip any first file out of profile gamut patches\n",ICC_FILE_EXT_ND);
+ fprintf(stderr," -X file.ccmx Apply Colorimeter Correction Matrix to second file\n");
+ fprintf(stderr," target.ti3 Target (reference) PCS or spectral values.\n");
+ fprintf(stderr," measured.ti3 Measured (actual) PCS or spectral values\n");
+ exit(1);
+ }
+
+/* Patch value type */
+typedef struct {
+ char sid[50]; /* sample id */
+ char loc[100]; /* sample location (empty if none) */
+ int og; /* Out of gamut flag */
+ double xyz[3]; /* XYZ value */
+ double v[3]; /* Lab value */
+ double de; /* Delta E */
+ double ixde[3]; /* XYZ Component DE */
+ double ide[3]; /* Lab Component DE */
+} pval;
+
+int main(int argc, char *argv[])
+{
+ int fa,nfa,mfa; /* current argument we're looking at */
+ int verb = 0; /* Verbose level */
+ int norm = 0; /* 1 = norm to White Y, 2 = norm to White XYZ */
+ /* 3 = norm to White X+Y+Z */
+ int usestdd50 = 0; /* Use standard D50 instead of avg white as reference */
+ int cie94 = 0;
+ int cie2k = 0;
+ int dovrml = 0;
+ int doaxes = 0;
+ int dosort = 0;
+ char ccmxname[MAXNAMEL+1] = "\000"; /* Colorimeter Correction Matrix name */
+ ccmx *cmx = NULL; /* Colorimeter Correction Matrix */
+ char gprofname[MAXNAMEL+1] = "\000"; /* Gamut limit profile name */
+ icmFile *fp = NULL;
+ icc *icco = NULL;
+ xicc *xicco = NULL;
+ icxLuBase *luo = NULL;
+
+ struct {
+ char name[MAXNAMEL+1]; /* Patch filename */
+ int isdisp; /* nz if display */
+ int isdnormed; /* Has display data been normalised to 100 ? */
+ int npat; /* Number of patches */
+ int nig; /* Number of patches in gamut */
+ double w[3]; /* XYZ of "white" */
+ double nw[3]; /* Normalised XYZ of "white" */
+ pval *pat; /* patch values */
+ } cg[2]; /* Target and current patch file information */
+
+ int *match; /* Array mapping first list indexes to corresponding second */
+ int *sort; /* Array of first list indexes in sorted order */
+ int fwacomp = 0; /* FWA compensation */
+ int spec = 0; /* Use spectral data flag */
+ icxIllumeType tillum = icxIT_none; /* Target/simulated instrument illuminant */
+ xspect cust_tillum, *tillump = NULL; /* Custom target/simulated illumination spectrum */
+ icxIllumeType illum = icxIT_D50; /* Spectral defaults */
+ xspect cust_illum; /* Custom illumination spectrum */
+ icxObserverType observ = icxOT_CIE_1931_2;
+
+ icmXYZNumber labw = icmD50; /* The Lab white reference */
+
+ char out_name[MAXNAMEL+4+1]; /* VRML name */
+ vrml *wrl = NULL;
+
+ int i, j, n;
+
+#if defined(__IBMC__)
+ _control87(EM_UNDERFLOW, EM_UNDERFLOW);
+ _control87(EM_OVERFLOW, EM_OVERFLOW);
+#endif
+
+ if (argc <= 1)
+ usage();
+
+ /* Process the arguments */
+ mfa = 2; /* Minimum final 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+mfa) < argc) {
+ if (argv[fa+1][0] != '-') {
+ nfa = fa + 1;
+ na = argv[nfa]; /* next is seperate non-flag argument */
+ }
+ }
+ }
+
+ if (argv[fa][1] == '?')
+ usage();
+
+ /* Verbose */
+ else if (argv[fa][1] == 'v') {
+ verb = 1;
+
+ if (na != NULL && na[0] >= '0' && na[0] <= '9') {
+ verb = atoi(na);
+ fa = nfa;
+ }
+ }
+
+ /* normalize */
+ else if (argv[fa][1] == 'n'
+ || argv[fa][1] == 'N') {
+ norm = 1;
+ if (argv[fa][1] == 'N')
+ norm = 2;
+ }
+
+ else if (argv[fa][1] == 'm') {
+ norm = 3;
+ }
+
+ else if (argv[fa][1] == 'D')
+ usestdd50 = 1;
+
+ /* VRML */
+ else if (argv[fa][1] == 'w')
+ dovrml = 1;
+ else if (argv[fa][1] == 'W')
+ dovrml = 2;
+
+ /* Axes */
+ else if (argv[fa][1] == 'x')
+ doaxes = 1;
+
+ /* CIE94 delta E */
+ else if (argv[fa][1] == 'c') {
+ cie94 = 1;
+ cie2k = 0;
+ }
+
+ else if (argv[fa][1] == 'k') {
+ cie94 = 0;
+ cie2k = 1;
+ }
+
+ /* Sort */
+ else if (argv[fa][1] == 's')
+ dosort = 1;
+
+ /* FWA compensation */
+ else if (argv[fa][1] == 'f') {
+ fwacomp = 1;
+
+ if (na != NULL) { /* Argument is present - target/simulated instr. illum. */
+ fa = nfa;
+ if (strcmp(na, "A") == 0
+ || strcmp(na, "M0") == 0) {
+ spec = 1;
+ tillum = icxIT_A;
+ } else if (strcmp(na, "C") == 0) {
+ spec = 1;
+ tillum = icxIT_C;
+ } else if (strcmp(na, "D50") == 0
+ || strcmp(na, "M1") == 0) {
+ spec = 1;
+ tillum = icxIT_D50;
+ } else if (strcmp(na, "D50M2") == 0
+ || strcmp(na, "M2") == 0) {
+ spec = 1;
+ tillum = icxIT_D50M2;
+ } else if (strcmp(na, "D65") == 0) {
+ spec = 1;
+ tillum = icxIT_D65;
+ } else if (strcmp(na, "F5") == 0) {
+ spec = 1;
+ tillum = icxIT_F5;
+ } else if (strcmp(na, "F8") == 0) {
+ spec = 1;
+ tillum = icxIT_F8;
+ } else if (strcmp(na, "F10") == 0) {
+ spec = 1;
+ tillum = icxIT_F10;
+ } else { /* Assume it's a filename */
+ spec = 1;
+ tillum = icxIT_custom;
+ if (read_xspect(&cust_tillum, na) != 0)
+ usage();
+ }
+ }
+ }
+
+ /* Spectral to CIE Illuminant type */
+ else if (argv[fa][1] == 'i') {
+ fa = nfa;
+ if (na == NULL) usage();
+ 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, "D50M2") == 0) {
+ spec = 1;
+ illum = icxIT_D50M2;
+ } 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();
+ }
+ }
+
+ /* Spectral Observer type */
+ else if (argv[fa][1] == 'o') {
+ fa = nfa;
+ if (na == NULL) usage();
+ 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();
+ }
+
+ /* Gamut limit profile for first file */
+ else if (argv[fa][1] == 'L') {
+ fa = nfa;
+ if (na == NULL) usage();
+ strncpy(gprofname,na,MAXNAMEL-1); gprofname[MAXNAMEL-1] = '\000';
+ }
+
+ /* Colorimeter Correction Matrix for second file */
+ else if (argv[fa][1] == 'X') {
+ fa = nfa;
+ if (na == NULL) usage();
+ strncpy(ccmxname,na,MAXNAMEL-1); ccmxname[MAXNAMEL-1] = '\000';
+
+ } else
+ usage();
+ } else
+ break;
+ }
+
+ /* Get the file name arguments */
+ if (fa >= argc || argv[fa][0] == '-') usage();
+ strncpy(cg[0].name,argv[fa++],MAXNAMEL); cg[0].name[MAXNAMEL] = '\000';
+
+ if (fa >= argc || argv[fa][0] == '-') usage();
+ strncpy(cg[1].name,argv[fa],MAXNAMEL); cg[1].name[MAXNAMEL] = '\000';
+
+ /* Create VRML name */
+ {
+ char *xl;
+ strcpy(out_name, cg[1].name);
+ if ((xl = strrchr(out_name, '.')) == NULL) /* Figure where extention is */
+ xl = out_name + strlen(out_name);
+ strcpy(xl,".wrl");
+ }
+
+ if (fwacomp && spec == 0)
+ error ("FWA compensation only works when viewer and/or illuminant selected");
+
+ /* Gamut limit profile */
+ if (gprofname[0] != '\000') {
+ int rv;
+
+ if ((fp = new_icmFileStd_name(gprofname,"r")) == NULL)
+ error ("Can't open file '%s'",gprofname);
+
+ if ((icco = new_icc()) == NULL)
+ error ("Creation of ICC object failed");
+
+ if ((rv = icco->read(icco,fp,0)) != 0)
+ error("Reading profile '%s' failed failed with error %d:'%s'\n",
+ gprofname, icco->errc, icco->err);
+
+ if (icco->header->deviceClass != icSigInputClass
+ && icco->header->deviceClass != icSigDisplayClass
+ && icco->header->deviceClass != icSigOutputClass)
+ error("Profile '%s' must be a device profile to filter by gamut",gprofname);
+
+ /* Wrap with an expanded icc */
+ if ((xicco = new_xicc(icco)) == NULL)
+ error ("Creation of xicc failed");
+
+ /* Get a expanded color conversion object */
+ if ((luo = xicco->get_luobj(xicco, ICX_CLIP_NEAREST | ICX_FAST_SETUP,
+ icmFwd, icRelativeColorimetric, icSigXYZData, icmLuOrdNorm, NULL, NULL)) == NULL)
+ error ("%d, %s",xicco->errc, xicco->err);
+ }
+
+ /* Colorimeter Correction Matrix */
+ if (ccmxname[0] != '\000') {
+ if ((cmx = new_ccmx()) == NULL)
+ error("new_ccmx failed\n");
+ if (cmx->read_ccmx(cmx,ccmxname))
+ error("Reading Colorimeter Correction Matrix file '%s' failed with error %d:'%s'\n",
+ ccmxname, cmx->errc, cmx->err);
+ }
+
+
+ /* Open up each 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 sldx = -1; /* Sample location index, < 0 if invalid */
+ 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].nig = cg[n].npat = cgf->t[0].nsets; /* Number of patches */
+
+ /* Figure out what sort of device it is */
+ {
+ int ti;
+
+ cg[n].isdisp = 0;
+ cg[n].isdnormed = 0;
+ cg[n].w[0] = cg[n].w[1] = cg[n].w[2] = 0.0;
+
+ 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) {
+ cg[n].isdisp = 1;
+ cg[n].isdnormed = 1; /* Assume display type is normalised to 100 */
+ illum = icxIT_none; /* Displays are assumed to be self luminous */
+ /* ?? What if two files are different ?? */
+ }
+
+ if (cg[n].isdisp) {
+
+ if ((ti = cgf->find_kword(cgf, 0, "LUMINANCE_XYZ_CDM2")) >= 0) {
+ if (sscanf(cgf->t[0].kdata[ti], " %lf %lf %lf ",&cg[n].w[0], &cg[n].w[1], &cg[n].w[2]) != 3)
+ cg[n].w[0] = cg[n].w[1] = cg[n].w[2] = 0.0;
+ }
+
+ /* See if there is an explicit tag indicating data has been normalised to Y = 100 */
+ if ((ti = cgf->find_kword(cgf, 0, "NORMALIZED_TO_Y_100")) >= 0) {
+ if (strcmp(cgf->t[0].kdata[ti],"NO") == 0) {
+ cg[n].isdnormed = 0;
+ } else {
+ cg[n].isdnormed = 1;
+ }
+ }
+ }
+ }
+
+ /* 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 ((sldx = cgf->find_field(cgf, 0, "SAMPLE_LOC")) < 0
+ || cgf->t[0].ftype[sldx] != cs_t)
+ sldx = -1;
+
+ 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]);
+ if (sldx >= 0)
+ strcpy(cg[n].pat[i].loc, (char *)cgf->t[0].fdata[i][sldx]);
+ else
+ cg[n].pat[i].loc[0] = '\000';
+ cg[n].pat[i].og = 0;
+ cg[n].pat[i].xyz[0] = *((double *)cgf->t[0].fdata[i][xix]);
+ cg[n].pat[i].xyz[1] = *((double *)cgf->t[0].fdata[i][yix]);
+ cg[n].pat[i].xyz[2] = *((double *)cgf->t[0].fdata[i][zix]);
+
+ if (isLab) { /* Convert to XYZ */
+ icmLab2XYZ(&icmD50, cg[n].pat[i].xyz, cg[n].pat[i].xyz);
+ }
+//printf("~1 file %d patch %d = XYZ %f %f %f\n", n,i,cg[n].pat[i].xyz[0],cg[n].pat[i].xyz[1],cg[n].pat[i].xyz[2]);
+
+ /* restore normalised display values to absolute */
+ if (cg[n].isdnormed) {
+ if (cg[n].w[1] > 0.0) {
+ cg[n].pat[i].xyz[0] *= cg[n].w[1]/100.0;
+ cg[n].pat[i].xyz[1] *= cg[n].w[1]/100.0;
+ cg[n].pat[i].xyz[2] *= cg[n].w[1]/100.0;
+ }
+
+ } else if (!cg[n].isdisp) {
+ /* If reflective or transmissive that are 0..100%, */
+ /* scale back to 0.. 1 */
+ cg[n].pat[i].xyz[0] /= 100.0; /* scale back to XYZ 1.0 */
+ cg[n].pat[i].xyz[1] /= 100.0;
+ cg[n].pat[i].xyz[2] /= 100.0;
+ }
+
+ /* Apply ccmx */
+ if (n == 1 && cmx != NULL) {
+ cmx->xform(cmx, cg[n].pat[i].xyz, cg[n].pat[i].xyz);
+ }
+ }
+
+ } 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]);
+ if (!cg[n].isdisp || cg[n].isdnormed != 0)
+ sp.norm = 100.0;
+ else
+ sp.norm = 1.0;
+
+ /* 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);
+ }
+
+ /* Create a spectral conversion object */
+ if ((sp2cie = new_xsp2cie(illum, illum == icxIT_none ? NULL : &cust_illum,
+ observ, NULL, icSigXYZData, icxClamp)) == 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;
+
+ /* Since we don't want to assume that there are any associated device */
+ /* values present in each file, we can't use this as means of */
+ /* determining the media color. Use an alternative approach here, */
+ /* which may give slightly different results to profile. */
+
+ /* Track the maximum reflectance for any band to determine white. */
+ /* This might silently fail, if there isn't white in the sample 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 we are setting a specific simulated instrument illuminant */
+ if (tillum != icxIT_none) {
+ tillump = &cust_tillum;
+ if (tillum != icxIT_custom) {
+ if (standardIlluminant(tillump, tillum, 0.0)) {
+ error("simulated inst. illum. not recognised");
+ }
+ }
+ }
+
+ if (sp2cie->set_fwa(sp2cie, &insp, tillump, &mwsp))
+ error ("Set FWA on sp2cie failed");
+
+ if (verb) {
+ double FWAc;
+ sp2cie->get_fwa_info(sp2cie, &FWAc);
+ fprintf(verbo,"FWA content = %f\n",FWAc);
+ }
+ }
+
+ for (i = 0; i < cg[0].npat; i++) {
+
+ strcpy(cg[n].pat[i].sid, (char *)cgf->t[0].fdata[i][sidx]);
+ if (sldx >= 0)
+ strcpy(cg[n].pat[i].loc, (char *)cgf->t[0].fdata[i][sldx]);
+ else
+ cg[n].pat[i].loc[0] = '\000';
+ cg[n].pat[i].og = 0;
+
+ /* 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 XYZ space */
+ sp2cie->convert(sp2cie, cg[n].pat[i].xyz, &sp);
+
+ /* restore normalised display values to absolute */
+ if (cg[n].isdnormed) {
+ if (cg[n].w[1] > 0.0) {
+ cg[n].pat[i].xyz[0] *= cg[n].w[1];
+ cg[n].pat[i].xyz[1] *= cg[n].w[1];
+ cg[n].pat[i].xyz[2] *= cg[n].w[1];
+ }
+
+ }
+
+ /* Apply ccmx */
+ if (n == 1 && cmx != NULL) {
+ cmx->xform(cmx, cg[n].pat[i].xyz, cg[n].pat[i].xyz);
+ }
+ }
+
+ sp2cie->del(sp2cie); /* Done with this */
+
+ } /* End of reading in CGATs file */
+
+
+ /* Locate the patch with maximum Y, a possible white patch */
+ if (norm) {
+ int ii;
+
+ if (cg[n].w[1] == 0.0) { /* No white patch */
+
+ /* Locate patch with biggest Y, assume it is white... */
+ for (i = 0; i < cg[n].npat; i++) {
+ if (cg[n].pat[i].xyz[1] > cg[n].w[1]) {
+ icmCpy3(cg[n].w, cg[n].pat[i].xyz);
+ ii = i;
+ }
+ }
+ if (verb) printf("File %d Chose patch %d as white, xyz %f %f %f\n",
+ n, ii+1,cg[n].w[0],cg[n].w[1],cg[n].w[2]);
+ } else {
+ if (verb) printf("File %d White is from display luminance ref. xyz %f %f %f\n",
+ n, cg[n].w[0],cg[n].w[1],cg[n].w[2]);
+ }
+ icmCpy3(cg[n].nw, cg[n].w);
+ }
+
+
+ /* Normalise this file to white = 1.0 or D50 */
+ if (norm) {
+ int ii;
+
+ double chmat[3][3]; /* Chromatic adapation matrix */
+
+ if (norm == 2) { /* Norm to white XYZ */
+ icmXYZNumber s_wp;
+ icmAry2XYZ(s_wp, cg[n].w);
+ icmChromAdaptMatrix(ICM_CAM_BRADFORD, icmD50, s_wp, chmat);
+ }
+
+ for (i = 0; i < cg[n].npat; i++) {
+ if (norm == 1) {
+ cg[n].pat[i].xyz[0] *= 100.0 / cg[n].w[1];
+ cg[n].pat[i].xyz[1] *= 100.0 / cg[n].w[1];
+ cg[n].pat[i].xyz[2] *= 100.0 / cg[n].w[1];
+ } else if (norm == 2) {
+ icmMulBy3x3(cg[n].pat[i].xyz, chmat, cg[n].pat[i].xyz);
+ } else {
+ cg[n].pat[i].xyz[0] *= 100.0 / (cg[n].w[0] + cg[n].w[1] + cg[n].w[2]);
+ cg[n].pat[i].xyz[1] *= 100.0 / (cg[n].w[0] + cg[n].w[1] + cg[n].w[2]);
+ cg[n].pat[i].xyz[2] *= 100.0 / (cg[n].w[0] + cg[n].w[1] + cg[n].w[2]);
+ }
+//printf("~1 file %d patch %d = norm XYZ %f %f %f\n", n,i,cg[n].pat[i].xyz[0],cg[n].pat[i].xyz[1],cg[n].pat[i].xyz[2]);
+ }
+ /* Compute normalised white too */
+ if (norm == 1) {
+ cg[n].nw[0] *= 100.0 / cg[n].w[1];
+ cg[n].nw[1] *= 100.0 / cg[n].w[1];
+ cg[n].nw[2] *= 100.0 / cg[n].w[1];
+ } else if (norm == 2) {
+ icmMulBy3x3(cg[n].nw, chmat, cg[n].w);
+ } else {
+ cg[n].nw[0] *= 100.0 / (cg[n].w[0] + cg[n].w[1] + cg[n].w[2]);
+ cg[n].nw[1] *= 100.0 / (cg[n].w[0] + cg[n].w[1] + cg[n].w[2]);
+ cg[n].nw[2] *= 100.0 / (cg[n].w[0] + cg[n].w[1] + cg[n].w[2]);
+ }
+//printf("~1 file %d norm white XYZ %f %f %f\n", n,cg[n].nw[0], cg[n].nw[1], cg[n].nw[2]);
+ }
+ cgf->del(cgf); /* Clean up */
+ }
+ if (cmx != NULL)
+ cmx->del(cmx);
+ cmx = NULL;
+
+ /* 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 of patches to the first */
+ 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);
+ }
+ }
+
+ /* Figure out which patches to skip because they are out of gamut */
+ if (luo != NULL) {
+ double chmat[3][3]; /* Chromatic adapation matrix */
+ double out[MAX_CHAN], in[3], check[3];
+ icmXYZNumber s_wp;
+ int rv;
+
+ /* Convert sample PCS to relative */
+ icmAry2XYZ(s_wp, cg[0].nw);
+ icmChromAdaptMatrix(ICM_CAM_BRADFORD, icmD50, s_wp, chmat);
+
+ for (i = 0; i < cg[0].npat; i++) {
+ icmMulBy3x3(in, chmat, cg[0].pat[i].xyz);
+//printf("~1 %d: xyz %f %f %f, rel %f %f %f\n", i+1, cg[0].pat[i].xyz[0], cg[0].pat[i].xyz[1], cg[0].pat[i].xyz[2], in[0], in[1], in[2]);
+
+ if ((rv = luo->inv_lookup(luo, out, in)) > 0 || 1) {
+ double de;
+
+ luo->lookup(luo, check, out);
+ de = icmXYZLabDE(&icmD50,check, in);
+//printf("~1 %d: rv %d, de %f, check XYZ %f %f %f\n",i+1,rv, de, check[0],check[1],check[2]);
+
+ if (de >= 0.01) {
+ cg[0].pat[i].og = 1;
+//printf("~1 Patch %d is out of gamut by DE %f RGB %f %f %f\n",i+1,de,out[0],out[1],out[2]);
+ if (verb >= 3)
+ printf("Patch %d is out of gamut by DE %f\n",i+1,de);
+ cg[0].nig--;
+ }
+ }
+ }
+ if (verb)
+ fprintf(verbo,"No of test patches in gamut = %d/%d\n",cg[0].npat - cg[0].nig,cg[0].npat);
+ }
+
+ /* Adjust the Lab reference white to be the mean of the white of the two files */
+ if (norm != 0 && !usestdd50) {
+ labw.X = 0.5 * (cg[0].nw[0] + cg[1].nw[0]);
+ labw.Y = 0.5 * (cg[0].nw[1] + cg[1].nw[1]);
+ labw.Z = 0.5 * (cg[0].nw[2] + cg[1].nw[2]);
+
+ if (verb)
+ printf("L*a*b* white reference = XYZ %f %f %f\n",labw.X,labw.Y,labw.Z);
+ }
+
+ /* Convert XYZ to Lab */
+ for (n = 0; n < 2; n++) {
+ for (i = 0; i < cg[n].npat; i++) {
+ icmXYZ2Lab(&labw, cg[n].pat[i].v, cg[n].pat[i].xyz);
+ }
+ }
+
+ /* Compute the delta E's */
+ for (i = 0; i < cg[0].npat; i++) {
+
+ if (cg[0].pat[i].og) /* Skip out of gamut patches */
+ continue;
+
+ cg[0].pat[i].ixde[0] = fabs(cg[0].pat[i].xyz[0] - cg[1].pat[match[i]].xyz[0]);
+ cg[0].pat[i].ixde[1] = fabs(cg[0].pat[i].xyz[1] - cg[1].pat[match[i]].xyz[1]);
+ cg[0].pat[i].ixde[2] = fabs(cg[0].pat[i].xyz[2] - cg[1].pat[match[i]].xyz[2]);
+
+ if (cie2k)
+ cg[0].pat[i].de = icmCIE2K(cg[0].pat[i].v, cg[1].pat[match[i]].v);
+ else if (cie94)
+ cg[0].pat[i].de = icmCIE94(cg[0].pat[i].v, cg[1].pat[match[i]].v);
+ else
+ cg[0].pat[i].de = icmLabDE(cg[0].pat[i].v, cg[1].pat[match[i]].v);
+
+ cg[0].pat[i].ide[0] = fabs(cg[0].pat[i].v[0] - cg[1].pat[match[i]].v[0]);
+ cg[0].pat[i].ide[1] = fabs(cg[0].pat[i].v[1] - cg[1].pat[match[i]].v[1]);
+ cg[0].pat[i].ide[2] = fabs(cg[0].pat[i].v[2] - cg[1].pat[match[i]].v[2]);
+ }
+
+ /* Create sorted list, from worst to best. */
+ if ((sort = (int *)malloc(sizeof(int) * cg[0].npat)) == NULL)
+ error("Malloc failed - sort[]");
+ for (i = 0; i < cg[0].npat; i++)
+ sort[i] = i;
+
+#define HEAP_COMPARE(A,B) (cg[0].pat[A].de > cg[0].pat[B].de)
+ HEAPSORT(int, sort, cg[0].npat);
+#undef HEAP_COMPARE
+
+ /* - - - - - - - - - - */
+ /* Figure out the report */
+ {
+ double merr = 0.0, aerr = 0.0;
+ int n90;
+ double merr90 = 0.0, aerr90 = 0.0;
+ int n10;
+ double merr10 = 0.0, aerr10 = 0.0;
+ double rad;
+ double aierr[3] = { 0.0, 0.0, 0.0 };
+ double aixerr[3] = { 0.0, 0.0, 0.0 };
+
+ if (dovrml) {
+ wrl = new_vrml(out_name, doaxes, 0);
+ wrl->start_line_set(wrl, 0);
+
+ /* Fudge sphere diameter */
+ rad = 10.0/pow(cg[0].npat, 1.0/3.0);
+ }
+
+ /* Do overall results */
+ for (i = 0; i < cg[0].npat; i++) {
+ double de;
+
+ if (cg[0].pat[i].og) /* Skip out of gamut patches */
+ continue;
+
+ if (dosort)
+ j = sort[i];
+ else
+ j = i;
+
+ de = cg[0].pat[j].de;
+ aerr += de;
+
+ aierr[0] += cg[0].pat[j].ide[0];
+ aierr[1] += cg[0].pat[j].ide[1];
+ aierr[2] += cg[0].pat[j].ide[2];
+
+ aixerr[0] += cg[0].pat[j].ixde[0];
+ aixerr[1] += cg[0].pat[j].ixde[1];
+ aixerr[2] += cg[0].pat[j].ixde[2];
+
+ if (verb >= 2) {
+
+ printf("%s%s%s: %f %f %f <=> %f %f %f de %f\n",
+ cg[0].pat[j].sid,
+ cg[0].pat[j].loc[0] != '\000' ? " " : "",
+ cg[0].pat[j].loc,
+ cg[0].pat[j].v[0], cg[0].pat[j].v[1], cg[0].pat[j].v[2],
+ cg[1].pat[match[j]].v[0], cg[1].pat[match[j]].v[1], cg[1].pat[match[j]].v[2],
+ de);
+
+#ifdef NEVER /* Print XYZ as well */
+ printf(" %f %f %f <=> %f %f %f\n",
+ cg[0].pat[j].xyz[0], cg[0].pat[j].xyz[1], cg[0].pat[j].xyz[2],
+ cg[1].pat[match[j]].xyz[0], cg[1].pat[match[j]].xyz[1], cg[1].pat[match[j]].xyz[2]);
+#endif
+ }
+
+ if (de > merr)
+ merr = de;
+
+ if (dovrml) {
+ if (de > 1e-6) {
+ wrl->add_vertex(wrl, 0, cg[0].pat[j].v);
+ wrl->add_vertex(wrl, 0, cg[1].pat[j].v);
+ }
+ if (dovrml == 2) {
+ wrl->add_marker(wrl, cg[0].pat[j].v, NULL, rad);
+ wrl->add_marker(wrl, cg[1].pat[j].v, NULL, rad);
+ }
+ }
+
+ }
+ if (cg[0].nig > 0) {
+ aerr /= (double)cg[0].nig;
+ aierr[0] /= (double)cg[0].nig;
+ aierr[1] /= (double)cg[0].nig;
+ aierr[2] /= (double)cg[0].nig;
+
+ aixerr[0] /= (double)cg[0].nig;
+ aixerr[1] /= (double)cg[0].nig;
+ aixerr[2] /= (double)cg[0].nig;
+ }
+
+ if (dovrml) {
+ wrl->make_lines(wrl, 0, 2);
+ wrl->del(wrl);
+ wrl = NULL;
+ }
+
+ /* Do best 90% */
+ n90 = (int)(cg[0].nig * 9.0/10.0 + 0.5);
+ for (i = j = 0; i < cg[0].npat; i++) {
+ double de = cg[0].pat[sort[i]].de;
+ if (cg[0].pat[i].og) /* Skip out of gamut */
+ continue;
+ if (j >= (cg[0].nig-n90)) { /* If in top 90% of in gamut patches */
+ aerr90 += de;
+ if (de > merr90)
+ merr90 = de;
+ }
+ j++; /* Index of within gamut patches */
+ }
+ if (n90 > 0)
+ aerr90 /= (double)n90;
+
+ /* Do worst 10% */
+ n10 = (int)(cg[0].nig * 1.0/10.0 + 0.5);
+ for (i = j = 0; i < cg[0].npat; i++) {
+ double de = cg[0].pat[sort[i]].de;
+ if (cg[0].pat[i].og) /* Skip out of gamut */
+ continue;
+ if (j <= n10) { /* If in worst 10% of in gamut patches */
+ aerr10 += de;
+ if (de > merr10)
+ merr10 = de;
+ }
+ j++;
+ }
+ if (n10 > 0)
+ aerr10 /= (double)n10;
+
+ if (verb) {
+ fprintf(verbo,"No of test patches in worst 10%% are = %d\n",n10);
+ fprintf(verbo,"No of test patches in best 90%% are = %d\n",n90);
+ }
+ printf("Verify results:\n");
+ printf(" Total errors%s: peak = %f, avg = %f\n", cie2k ? " (CIEDE2000)" : cie94 ? " (CIE94)" : "", merr, aerr);
+ printf(" Worst 10%% errors%s: peak = %f, avg = %f\n", cie2k ? " (CIEDE2000)" : cie94 ? " (CIE94)" : "", merr10, aerr10);
+ printf(" Best 90%% errors%s: peak = %f, avg = %f\n", cie2k ? " (CIEDE2000)" : cie94 ? " (CIE94)" : "", merr90, aerr90);
+ printf(" avg err X %f, Y %f, Z %f\n", aixerr[0], aixerr[1], aixerr[2]);
+ printf(" avg err L* %f, a* %f, b* %f\n", aierr[0], aierr[1], aierr[2]);
+
+ free(sort);
+ free(match);
+ free(cg[0].pat);
+ free(cg[1].pat);
+ }
+
+ if (luo != NULL)
+ luo->del(luo);
+ if (xicco != NULL)
+ xicco->del(xicco); /* Expansion wrapper */
+ if (icco != NULL)
+ icco->del(icco); /* Icc */
+ if (fp != NULL)
+ fp->del(fp);
+
+ return 0;
+}
+
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 00:17:00 +0000