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/* Copyright (c) 1995 Regents of the University of California */ |
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/* Copyright (c) 1997 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#define NMBNEU 6 /* Number of MacBeth neutral colors */ |
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short mbneu[NMBNEU] = {Black,Neutral35,Neutral5,Neutral65,Neutral8,White}; |
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|
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#define NMBMOD 16 /* Number of MacBeth unsaturated colors */ |
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short mbmod[NMBMOD] = { |
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DarkSkin,LightSkin,BlueSky,Foliage,BlueFlower,BluishGreen, |
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PurplishBlue,ModerateRed,YellowGreen,OrangeYellow, |
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Black,Neutral35,Neutral5,Neutral65,Neutral8,White |
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}; |
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#define NEUFLGS (1L<<White|1L<<Neutral8|1L<<Neutral65| \ |
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1L<<Neutral5|1L<<Neutral35|1L<<Black) |
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|
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#define NMBSAT 8 /* Number of MacBeth saturated colors */ |
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short mbsat[NMBSAT] = { |
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Red,Green,Blue,Magenta,Yellow,Cyan, |
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Orange,Purple |
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}; |
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#define SATFLGS (1L<<Red|1L<<Green|1L<<Blue|1L<<Magenta|1L<<Yellow| \ |
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1L<<Cyan|1L<<Orange|1L<<Purple|1L<<PurplishBlue| \ |
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1L<<YellowGreen|1<<OrangeYellow|1L<<BlueFlower) |
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|
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#define REQFLGS (1L<<White|1L<<Neutral8|1L<<Neutral65| \ |
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1L<<Neutral5|1L<<Neutral35|1L<<Black) |
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#define UNSFLGS (1L<<DarkSkin|1L<<LightSkin|1L<<BlueSky|1L<<Foliage| \ |
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1L<<BluishGreen|1L<<ModerateRed) |
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|
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#define CENTCVG 0.3 /* measured coverage of square sample */ |
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#define FULLCVG 0.9 /* coverage of entire square */ |
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#define REQFLGS NEUFLGS /* need these colors */ |
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#define MODFLGS (NEUFLGS|UNSFLGS) /* should be in gamut */ |
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|
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#define RG_BORD 0 /* patch border */ |
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#define RG_CENT 01 /* central region of patch */ |
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#define RG_ORIG 02 /* original color region */ |
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#define RG_CORR 04 /* corrected color region */ |
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|
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int scanning = 1; /* scanned input (or recorded output)? */ |
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|
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int xmax, ymax; /* input image dimensions */ |
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int bounds[4][2]; /* image coordinates of chart corners */ |
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double imgxfm[3][3]; /* coordinate transformation matrix */ |
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|
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COLOR inpRGB[24]; /* measured or scanned input colors */ |
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long inpflags = 0; /* flags of which colors were input */ |
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long gmtflags = 0; /* flags of out-of-gamut colors */ |
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|
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COLOR bramp[NMBNEU][2]; /* brightness ramp (per primary) */ |
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double solmat[3][3]; /* color mapping matrix */ |
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int argc; |
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char **argv; |
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{ |
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int inpispic = 1; |
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int i; |
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progname = argv[0]; |
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bounds[2][1] = atoi(argv[++i]); |
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bounds[3][0] = atoi(argv[++i]); |
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bounds[3][1] = atoi(argv[++i]); |
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inpispic = 2; |
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scanning = 2; |
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break; |
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case 'c': /* color input */ |
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inpispic = 0; |
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scanning = 0; |
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break; |
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default: |
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goto userr; |
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perror(argv[2]); |
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exit(1); |
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} |
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if (inpispic) { /* load input picture header */ |
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if (scanning) { /* load input picture header */ |
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#ifdef MSDOS |
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setmode(fileno(stdin), O_BINARY); |
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#endif |
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xmax = 512; |
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ymax = 2*512/3; |
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} |
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if (inpispic != 2) { /* use default boundaries */ |
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if (scanning != 2) { /* use default boundaries */ |
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bounds[0][0] = bounds[2][0] = .029*xmax + .5; |
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bounds[0][1] = bounds[1][1] = .956*ymax + .5; |
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bounds[1][0] = bounds[3][0] = .971*xmax + .5; |
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bounds[2][1] = bounds[3][1] = .056*ymax + .5; |
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} |
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init(); /* initialize */ |
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if (inpispic) /* get picture colors */ |
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if (scanning) /* get picture colors */ |
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getpicture(); |
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else |
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getcolors(); |
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compute(); /* compute color mapping */ |
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/* print comment */ |
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printf("{ Color correction file computed by:\n\t"); |
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printf("{\n\tColor correction file computed by:\n\t\t"); |
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printargs(argc, argv, stdout); |
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printf("\n\tUsage: pcomb -f %s uncorrected.pic > corrected.pic\n", |
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i+1 < argc ? argv[i+1] : "{this_file}"); |
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if (!scanning) |
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printf("\t Or: pcond [options] -f %s orig.pic > output.pic\n", |
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i+1 < argc ? argv[i+1] : "{this_file}"); |
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printf("}\n"); |
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putmapping(); /* put out color mapping */ |
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if (debugfp != NULL) /* put out debug picture */ |
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if (inpispic) |
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if (scanning) |
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picdebug(); |
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else |
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clrdebug(); |
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int |
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chartndx(x, y, cvg) /* find color number for position */ |
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chartndx(x, y, np) /* find color number for position */ |
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int x, y; |
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double cvg; |
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int *np; |
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{ |
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double ipos[3], cpos[3]; |
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int ix, iy; |
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double fx, fy; |
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double cmin, cmax; |
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ipos[0] = x; |
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ipos[1] = y; |
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cpos[0] /= cpos[2]; |
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cpos[1] /= cpos[2]; |
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if (cpos[0] < 0. || cpos[0] >= 6. || cpos[1] < 0. || cpos[1] >= 4.) |
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return(-1); |
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return(RG_BORD); |
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ix = cpos[0]; |
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iy = cpos[1]; |
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fx = cpos[0] - ix; |
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fy = cpos[1] - iy; |
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cmin = .5*(1.-cvg); |
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cmax = 1. - cmin; |
| 266 |
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if (fx < cmin || fx >= cmax || fy < cmin || fy >= cmax) |
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return(-1); |
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return(iy*6 + ix); |
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*np = iy*6 + ix; |
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> |
if (fx >= 0.35 && fx < 0.65 && fy >= 0.35 && fy < 0.65) |
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> |
return(RG_CENT); |
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> |
if (fx < 0.05 || fx >= 0.95 || fy < 0.05 || fy >= 0.95) |
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> |
return(RG_BORD); |
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if (fx >= 0.5) /* right side is corrected */ |
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> |
return(RG_CORR); |
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> |
return(RG_ORIG); /* left side is original */ |
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} |
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|
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COLOR pval; |
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int ccount[24]; |
| 280 |
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double d; |
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int y; |
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register int x, i; |
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> |
int y, i; |
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> |
register int x; |
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|
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scanln = (COLR *)malloc(xmax*sizeof(COLR)); |
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if (scanln == NULL) { |
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progname); |
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exit(1); |
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} |
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< |
for (x = 0; x < xmax; x++) { |
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i = chartndx(x, y, CENTCVG); |
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if (i >= 0) { |
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> |
for (x = 0; x < xmax; x++) |
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if (chartndx(x, y, &i) == RG_CENT) { |
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colr_color(pval, scanln[x]); |
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addcolor(inpRGB[i], pval); |
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ccount[i]++; |
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} |
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} |
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} |
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for (i = 0; i < 24; i++) { /* compute averages */ |
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if (ccount[i] == 0) |
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fgetval(stdin, 'f', &xyYin[0]) != 1 || |
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fgetval(stdin, 'f', &xyYin[1]) != 1 || |
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fgetval(stdin, 'f', &xyYin[2]) != 1 || |
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xyYin[0] < 0. | xyYin[0] > 1. | |
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xyYin[1] < 0. | xyYin[1] > 1.) { |
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> |
xyYin[0] < 0. | xyYin[1] < 0. || |
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> |
xyYin[0] + xyYin[1] > 1.) { |
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fprintf(stderr, "%s: bad color input data\n", |
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progname); |
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exit(1); |
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bresp(y, x) /* piecewise linear interpolation of primaries */ |
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COLOR y, x; |
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{ |
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double cv[3]; |
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register int i, n; |
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|
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for (i = 0; i < 3; i++) { |
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for (n = 0; n < NMBNEU-2; n++) |
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if (colval(x,i) < colval(bramp[n+1][0],i)) |
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break; |
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< |
cv[i] = ((colval(bramp[n+1][0],i) - colval(x,i)) * |
| 374 |
> |
colval(y,i) = ((colval(bramp[n+1][0],i) - colval(x,i)) * |
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colval(bramp[n][1],i) + |
| 376 |
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(colval(x,i) - colval(bramp[n][0],i)) * |
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colval(bramp[n+1][1],i)) / |
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(colval(bramp[n+1][0],i) - colval(bramp[n][0],i)); |
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if (cv[i] < 0.) cv[i] = 0.; |
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} |
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setcolor(y, cv[0], cv[1], cv[2]); |
| 380 |
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} |
| 381 |
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|
| 382 |
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|
| 383 |
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compute() /* compute color mapping */ |
| 384 |
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{ |
| 385 |
< |
COLOR clrin[NMBMOD], clrout[NMBMOD]; |
| 386 |
< |
register int i, n; |
| 385 |
> |
COLOR clrin[24], clrout[24]; |
| 386 |
> |
long cflags; |
| 387 |
> |
COLOR ctmp; |
| 388 |
> |
register int i, j, n; |
| 389 |
|
/* did we get what we need? */ |
| 390 |
|
if ((inpflags & REQFLGS) != REQFLGS) { |
| 391 |
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fprintf(stderr, "%s: missing required input colors\n", |
| 397 |
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copycolor(bramp[i][0], inpRGB[mbneu[i]]); |
| 398 |
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copycolor(bramp[i][1], mbRGB[mbneu[i]]); |
| 399 |
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} |
| 400 |
< |
/* compute color matrix */ |
| 401 |
< |
for (n = 0, i = 0; i < NMBMOD; i++) |
| 402 |
< |
if (inpflags & 1L<<mbmod[i]) { |
| 403 |
< |
bresp(clrin[n], inpRGB[mbmod[i]]); |
| 404 |
< |
copycolor(clrout[n], mbRGB[mbmod[i]]); |
| 405 |
< |
n++; |
| 406 |
< |
} |
| 407 |
< |
compsoln(clrin, clrout, n); |
| 400 |
> |
/* compute color mapping */ |
| 401 |
> |
do { |
| 402 |
> |
cflags = inpflags & ~gmtflags; |
| 403 |
> |
n = 0; /* compute transform matrix */ |
| 404 |
> |
for (i = 0; i < 24; i++) |
| 405 |
> |
if (cflags & 1L<<i) { |
| 406 |
> |
bresp(clrin[n], inpRGB[i]); |
| 407 |
> |
copycolor(clrout[n], mbRGB[i]); |
| 408 |
> |
n++; |
| 409 |
> |
} |
| 410 |
> |
compsoln(clrin, clrout, n); |
| 411 |
> |
/* check out-of-gamut colors */ |
| 412 |
> |
for (i = 0; i < 24; i++) |
| 413 |
> |
if (cflags & 1L<<i) { |
| 414 |
> |
cvtcolor(ctmp, mbRGB[i]); |
| 415 |
> |
for (j = 0; j < 3; j++) |
| 416 |
> |
if (colval(ctmp,j) <= 1e-6 || |
| 417 |
> |
colval(ctmp,j) >= 1.-1e-6) { |
| 418 |
> |
gmtflags |= 1L<<i; |
| 419 |
> |
break; |
| 420 |
> |
} |
| 421 |
> |
} |
| 422 |
> |
} while (cflags & gmtflags); |
| 423 |
> |
if (gmtflags & MODFLGS) |
| 424 |
> |
fprintf(stderr, |
| 425 |
> |
"%s: warning - some moderate colors are out of gamut\n", |
| 426 |
> |
progname); |
| 427 |
|
} |
| 428 |
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|
| 429 |
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|
| 441 |
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for (i = 0; i < NMBNEU; i++) |
| 442 |
|
printf(",%g", colval(bramp[i][1],j)); |
| 443 |
|
printf(");\n"); |
| 420 |
– |
printf("%c = %ci(1);\n", cchar[j], cchar[j]); |
| 444 |
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printf("%cfi(n) = if(n-%g, %d, if(%cxa(n+1)-%c, n, %cfi(n+1)));\n", |
| 445 |
|
cchar[j], NMBNEU-1.5, NMBNEU-1, cchar[j], |
| 446 |
|
cchar[j], cchar[j]); |
| 447 |
|
printf("%cndx = %cfi(1);\n", cchar[j], cchar[j]); |
| 448 |
< |
printf("%cn = ((%cxa(%cndx+1)-%c)*%cya(%cndx) + ", |
| 449 |
< |
cchar[j], cchar[j], cchar[j], |
| 450 |
< |
cchar[j], cchar[j], cchar[j]); |
| 448 |
> |
printf("%c%c = ((%cxa(%cndx+1)-%c)*%cya(%cndx) + ", |
| 449 |
> |
cchar[j], scanning?'n':'o', cchar[j], |
| 450 |
> |
cchar[j], cchar[j], cchar[j], cchar[j]); |
| 451 |
|
printf("(%c-%cxa(%cndx))*%cya(%cndx+1)) /\n", |
| 452 |
|
cchar[j], cchar[j], cchar[j], |
| 453 |
|
cchar[j], cchar[j]); |
| 455 |
|
cchar[j], cchar[j], cchar[j], cchar[j]); |
| 456 |
|
} |
| 457 |
|
/* print color mapping */ |
| 458 |
< |
printf("ro = %g*rn + %g*gn + %g*bn ;\n", |
| 459 |
< |
solmat[0][0], solmat[0][1], solmat[0][2]); |
| 460 |
< |
printf("go = %g*rn + %g*gn + %g*bn ;\n", |
| 461 |
< |
solmat[1][0], solmat[1][1], solmat[1][2]); |
| 462 |
< |
printf("bo = %g*rn + %g*gn + %g*bn ;\n", |
| 463 |
< |
solmat[2][0], solmat[2][1], solmat[2][2]); |
| 458 |
> |
if (scanning) { |
| 459 |
> |
printf("r = ri(1); g = gi(1); b = bi(1);\n"); |
| 460 |
> |
printf("ro = %g*rn + %g*gn + %g*bn ;\n", |
| 461 |
> |
solmat[0][0], solmat[0][1], solmat[0][2]); |
| 462 |
> |
printf("go = %g*rn + %g*gn + %g*bn ;\n", |
| 463 |
> |
solmat[1][0], solmat[1][1], solmat[1][2]); |
| 464 |
> |
printf("bo = %g*rn + %g*gn + %g*bn ;\n", |
| 465 |
> |
solmat[2][0], solmat[2][1], solmat[2][2]); |
| 466 |
> |
} else { |
| 467 |
> |
printf("r1 = ri(1); g1 = gi(1); b1 = bi(1);\n"); |
| 468 |
> |
printf("r = %g*r1 + %g*g1 + %g*b1 ;\n", |
| 469 |
> |
solmat[0][0], solmat[0][1], solmat[0][2]); |
| 470 |
> |
printf("g = %g*r1 + %g*g1 + %g*b1 ;\n", |
| 471 |
> |
solmat[1][0], solmat[1][1], solmat[1][2]); |
| 472 |
> |
printf("b = %g*r1 + %g*g1 + %g*b1 ;\n", |
| 473 |
> |
solmat[2][0], solmat[2][1], solmat[2][2]); |
| 474 |
> |
} |
| 475 |
|
} |
| 476 |
|
|
| 477 |
|
|
| 485 |
|
double colv[3], rowv[3]; |
| 486 |
|
register int i, j, k; |
| 487 |
|
|
| 488 |
< |
if (n < 3 | n > NMBMOD) { |
| 489 |
< |
fprintf(stderr, "%s: bad number of colors to match\n", progname); |
| 488 |
> |
if (n < 3) { |
| 489 |
> |
fprintf(stderr, "%s: too few colors to match!\n", progname); |
| 490 |
|
exit(1); |
| 491 |
|
} |
| 492 |
|
if (n == 3) |
| 538 |
|
cvtcolor(cout, cin) /* convert color according to our mapping */ |
| 539 |
|
COLOR cout, cin; |
| 540 |
|
{ |
| 541 |
+ |
COLOR ctmp; |
| 542 |
+ |
|
| 543 |
+ |
if (scanning) { |
| 544 |
+ |
bresp(ctmp, cin); |
| 545 |
+ |
cresp(cout, ctmp); |
| 546 |
+ |
} else { |
| 547 |
+ |
cresp(ctmp, cin); |
| 548 |
+ |
bresp(cout, ctmp); |
| 549 |
+ |
} |
| 550 |
+ |
if (colval(cout,RED) < 0.) |
| 551 |
+ |
colval(cout,RED) = 0.; |
| 552 |
+ |
if (colval(cout,GRN) < 0.) |
| 553 |
+ |
colval(cout,GRN) = 0.; |
| 554 |
+ |
if (colval(cout,BLU) < 0.) |
| 555 |
+ |
colval(cout,BLU) = 0.; |
| 556 |
+ |
} |
| 557 |
+ |
|
| 558 |
+ |
|
| 559 |
+ |
cresp(cout, cin) /* transform color according to matrix */ |
| 560 |
+ |
COLOR cout, cin; |
| 561 |
+ |
{ |
| 562 |
|
double r, g, b; |
| 563 |
|
|
| 564 |
< |
bresp(cout, cin); |
| 565 |
< |
r = colval(cout,0)*solmat[0][0] + colval(cout,1)*solmat[0][1] |
| 566 |
< |
+ colval(cout,2)*solmat[0][2]; |
| 567 |
< |
if (r < 0) r = 0; |
| 568 |
< |
g = colval(cout,0)*solmat[1][0] + colval(cout,1)*solmat[1][1] |
| 569 |
< |
+ colval(cout,2)*solmat[1][2]; |
| 515 |
< |
if (g < 0) g = 0; |
| 516 |
< |
b = colval(cout,0)*solmat[2][0] + colval(cout,1)*solmat[2][1] |
| 517 |
< |
+ colval(cout,2)*solmat[2][2]; |
| 518 |
< |
if (b < 0) b = 0; |
| 564 |
> |
r = colval(cin,0)*solmat[0][0] + colval(cin,1)*solmat[0][1] |
| 565 |
> |
+ colval(cin,2)*solmat[0][2]; |
| 566 |
> |
g = colval(cin,0)*solmat[1][0] + colval(cin,1)*solmat[1][1] |
| 567 |
> |
+ colval(cin,2)*solmat[1][2]; |
| 568 |
> |
b = colval(cin,0)*solmat[2][0] + colval(cin,1)*solmat[2][1] |
| 569 |
> |
+ colval(cin,2)*solmat[2][2]; |
| 570 |
|
setcolor(cout, r, g, b); |
| 571 |
|
} |
| 572 |
|
|
| 583 |
|
ctmp[1] = xyYin[2]; |
| 584 |
|
ctmp[2] = (1. - xyYin[0] - xyYin[1]) * d; |
| 585 |
|
cie_rgb(rgbout, ctmp); |
| 586 |
+ |
/* allow negative values */ |
| 587 |
+ |
colortrans(rgbout, xyz2rgbmat, ctmp, 0); |
| 588 |
|
} |
| 589 |
|
|
| 590 |
|
|
| 591 |
|
picdebug() /* put out debugging picture */ |
| 592 |
|
{ |
| 593 |
+ |
static COLOR blkcol = BLKCOLOR; |
| 594 |
|
COLOR *scan; |
| 595 |
< |
int y; |
| 596 |
< |
register int x, i; |
| 595 |
> |
int y, i; |
| 596 |
> |
register int x, rg; |
| 597 |
|
|
| 598 |
|
if (fseek(stdin, 0L, 0) == EOF) { |
| 599 |
|
fprintf(stderr, "%s: cannot seek on input picture\n", progname); |
| 619 |
|
exit(1); |
| 620 |
|
} |
| 621 |
|
for (x = 0; x < xmax; x++) { |
| 622 |
< |
i = chartndx(x, y, CENTCVG); |
| 623 |
< |
if (i < 0) |
| 622 |
> |
rg = chartndx(x, y, &i); |
| 623 |
> |
if (rg == RG_CENT) { |
| 624 |
> |
if (!(1L<<i & gmtflags) || (x+y)&07) |
| 625 |
> |
copycolor(scan[x], mbRGB[i]); |
| 626 |
> |
else |
| 627 |
> |
copycolor(scan[x], blkcol); |
| 628 |
> |
} else if (rg == RG_CORR) |
| 629 |
|
cvtcolor(scan[x], scan[x]); |
| 630 |
< |
else |
| 631 |
< |
copycolor(scan[x], mbRGB[i]); |
| 630 |
> |
else if (rg != RG_ORIG) |
| 631 |
> |
copycolor(scan[x], blkcol); |
| 632 |
|
} |
| 633 |
|
if (fwritescan(scan, xmax, debugfp) < 0) { |
| 634 |
|
fprintf(stderr, "%s: error writing debugging picture\n", |
| 645 |
|
clrdebug() /* put out debug picture from color input */ |
| 646 |
|
{ |
| 647 |
|
static COLR blkclr = BLKCOLR; |
| 648 |
< |
COLR mbclr[24], cvclr[24]; |
| 648 |
> |
COLR mbclr[24], cvclr[24], orclr[24]; |
| 649 |
|
COLR *scan; |
| 650 |
|
COLOR ctmp; |
| 651 |
< |
int y; |
| 652 |
< |
register int i, x; |
| 651 |
> |
int y, i; |
| 652 |
> |
register int x, rg; |
| 653 |
|
/* convert colors */ |
| 654 |
|
for (i = 0; i < 24; i++) { |
| 655 |
|
setcolr(mbclr[i], colval(mbRGB[i],RED), |
| 656 |
|
colval(mbRGB[i],GRN), colval(mbRGB[i],BLU)); |
| 657 |
|
if (inpflags & 1L<<i) { |
| 658 |
+ |
setcolr(orclr[i], colval(inpRGB[i],RED), |
| 659 |
+ |
colval(inpRGB[i],GRN), |
| 660 |
+ |
colval(inpRGB[i],BLU)); |
| 661 |
|
cvtcolor(ctmp, inpRGB[i]); |
| 662 |
|
setcolr(cvclr[i], colval(ctmp,RED), |
| 663 |
|
colval(ctmp,GRN), colval(ctmp,BLU)); |
| 675 |
|
fprtresolu(xmax, ymax, debugfp); |
| 676 |
|
/* write debug picture */ |
| 677 |
|
for (y = ymax-1; y >= 0; y--) { |
| 678 |
< |
for (x = 0; x < xmax; x++) |
| 679 |
< |
if ((i = chartndx(x, y, CENTCVG)) >= 0) |
| 680 |
< |
copycolr(scan[x], mbclr[i]); |
| 681 |
< |
else if ((i = chartndx(x, y, FULLCVG)) >= 0 && |
| 682 |
< |
inpflags & 1L<<i) |
| 683 |
< |
copycolr(scan[x], cvclr[i]); |
| 684 |
< |
else |
| 678 |
> |
for (x = 0; x < xmax; x++) { |
| 679 |
> |
rg = chartndx(x, y, &i); |
| 680 |
> |
if (rg == RG_CENT) { |
| 681 |
> |
if (!(1L<<i & gmtflags) || (x+y)&07) |
| 682 |
> |
copycolr(scan[x], mbclr[i]); |
| 683 |
> |
else |
| 684 |
> |
copycolr(scan[x], blkclr); |
| 685 |
> |
} else if (rg == RG_BORD || !(1L<<i & inpflags)) |
| 686 |
|
copycolr(scan[x], blkclr); |
| 687 |
+ |
else if (rg == RG_ORIG) |
| 688 |
+ |
copycolr(scan[x], orclr[i]); |
| 689 |
+ |
else /* rg == RG_CORR */ |
| 690 |
+ |
copycolr(scan[x], cvclr[i]); |
| 691 |
+ |
} |
| 692 |
|
if (fwritecolrs(scan, xmax, debugfp) < 0) { |
| 693 |
|
fprintf(stderr, "%s: error writing debugging picture\n", |
| 694 |
|
progname); |