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/* Copyright (c) 1995 Regents of the University of California */ |
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/* Copyright (c) 1999 Regents of the University of California */ |
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#ifndef lint |
4 |
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static char SCCSid[] = "$SunId$ LBL"; |
4 |
> |
static char SCCSid[] = "$SunId$ SGI"; |
5 |
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#endif |
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|
7 |
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/* |
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* Calibrate a scanned MacBeth Color Checker Chart |
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* |
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* Produce a .cal file suitable for use with pcomb. |
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* Produce a .cal file suitable for use with pcomb, |
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* or .cwp file suitable for use with pcwarp. |
12 |
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* |
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* Warping code depends on conformance of COLOR and W3VEC types. |
14 |
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*/ |
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#include <stdio.h> |
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#include <math.h> |
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#ifdef MSDOS |
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#include <fcntl.h> |
20 |
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#endif |
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#include "color.h" |
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#include "resolu.h" |
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#include "pmap.h" |
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#include "warp3d.h" |
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|
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/* MacBeth colors */ |
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#define DarkSkin 0 |
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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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|
85 |
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#define NMBMOD 16 /* Number of MacBeth unsaturated colors */ |
86 |
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short mbmod[NMBMOD] = { |
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DarkSkin,LightSkin,BlueSky,Foliage,BlueFlower,BluishGreen, |
83 |
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PurplishBlue,ModerateRed,YellowGreen,OrangeYellow, |
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Black,Neutral35,Neutral5,Neutral65,Neutral8,White |
85 |
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}; |
85 |
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#define NEUFLGS (1L<<White|1L<<Neutral8|1L<<Neutral65| \ |
86 |
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1L<<Neutral5|1L<<Neutral35|1L<<Black) |
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|
88 |
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#define NMBSAT 8 /* Number of MacBeth saturated colors */ |
89 |
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short mbsat[NMBSAT] = { |
90 |
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Red,Green,Blue,Magenta,Yellow,Cyan, |
90 |
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Orange,Purple |
91 |
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}; |
88 |
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#define SATFLGS (1L<<Red|1L<<Green|1L<<Blue|1L<<Magenta|1L<<Yellow| \ |
89 |
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1L<<Cyan|1L<<Orange|1L<<Purple|1L<<PurplishBlue| \ |
90 |
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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| \ |
93 |
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1L<<Neutral5|1L<<Neutral35|1L<<Black) |
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#define UNSFLGS (1L<<DarkSkin|1L<<LightSkin|1L<<BlueSky|1L<<Foliage| \ |
93 |
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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 */ |
95 |
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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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|
98 |
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#define RG_BORD 0 /* patch border */ |
99 |
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#define RG_CENT 01 /* central region of patch */ |
100 |
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#define RG_ORIG 02 /* original color region */ |
101 |
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#define RG_CORR 04 /* corrected color region */ |
102 |
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|
103 |
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#ifndef DISPCOM |
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#define DISPCOM "ximage -op %s" |
105 |
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#endif |
106 |
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|
107 |
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int scanning = 1; /* scanned input (or recorded output)? */ |
108 |
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double irrad = 1.0; /* irradiance multiplication factor */ |
109 |
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int rawmap = 0; /* put out raw color mapping? */ |
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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 */ |
116 |
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long inpflags = 0; /* flags of which colors were input */ |
117 |
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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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COLORMAT solmat; /* color mapping matrix */ |
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COLOR colmin, colmax; /* gamut limits */ |
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|
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WARP3D *wcor = NULL; /* color space warp */ |
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|
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FILE *debugfp = NULL; /* debug output picture */ |
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char *progname; |
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|
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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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|
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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; |
167 |
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case 'P': /* pick position */ |
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scanning = 3; |
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break; |
170 |
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case 'i': /* irradiance factor */ |
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i++; |
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if (badarg(argc-i, argv+i, "f")) |
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goto userr; |
174 |
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irrad = atof(argv[i]); |
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break; |
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case 'm': /* raw map output */ |
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rawmap = 1; |
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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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} |
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/* open files */ |
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if (i < argc && freopen(argv[i], "r", stdin) == NULL) { |
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perror(argv[1]); |
187 |
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perror(argv[i]); |
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exit(1); |
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} |
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if (i+1 < argc && freopen(argv[i+1], "w", stdout) == NULL) { |
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perror(argv[2]); |
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perror(argv[i+1]); |
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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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fprintf(stderr, "%s: bad input picture\n", progname); |
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exit(1); |
202 |
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} |
203 |
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if (scanning == 3) { |
204 |
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if (i >= argc) |
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goto userr; |
206 |
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pickchartpos(argv[i]); |
207 |
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scanning = 2; |
208 |
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} |
209 |
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} else { /* else set default xmax and ymax */ |
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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 */ |
220 |
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if (inpispic) /* get picture colors */ |
220 |
> |
if (scanning) /* get picture colors */ |
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getpicture(); |
222 |
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else |
223 |
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getcolors(); |
224 |
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compute(); /* compute color mapping */ |
225 |
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/* print comment */ |
226 |
< |
printf("{ Color correction file computed by:\n\t"); |
227 |
< |
printargs(argc, argv, stdout); |
228 |
< |
printf("}\n"); |
229 |
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putmapping(); /* put out color mapping */ |
225 |
> |
if (rawmap) { /* print out raw correspondence */ |
226 |
> |
register int j; |
227 |
> |
|
228 |
> |
printf("# Color correspondence produced by:\n#\t\t"); |
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> |
printargs(argc, argv, stdout); |
230 |
> |
printf("#\tUsage: pcwarp %s uncorrected.pic > corrected.pic\n", |
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i+1 < argc ? argv[i+1] : "{this_file}"); |
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printf("#\t Or: pcond [options] -m %s orig.pic > output.pic\n", |
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i+1 < argc ? argv[i+1] : "{this_file}"); |
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for (j = 0; j < 24; j++) |
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printf("%f %f %f %f %f %f\n", |
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colval(inpRGB[j],RED), colval(inpRGB[j],GRN), |
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colval(inpRGB[j],BLU), colval(mbRGB[j],RED), |
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colval(mbRGB[j],GRN), colval(mbRGB[j],BLU)); |
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if (scanning && debugfp != NULL) |
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cwarp(); /* color warp for debugging */ |
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} else { /* print color mapping */ |
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/* print header */ |
243 |
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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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} |
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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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exit(0); |
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userr: |
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fprintf(stderr, |
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"Usage: %s [-d dbg.pic][-p xul yul xur yur xll yll xlr ylr] input.pic [output.cal]\n", |
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> |
"Usage: %s [-d dbg.pic][-P | -p xul yul xur yur xll yll xlr ylr][-i irrad][-m] input.pic [output.{cal|cwp}]\n", |
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progname); |
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< |
fprintf(stderr, " or: %s [-d dbg.pic] -c [xyY.dat [output.cal]]\n", |
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> |
fprintf(stderr, " or: %s [-d dbg.pic][-i irrad][-m] -c [xyY.dat [output.{cal|cwp}]]\n", |
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progname); |
265 |
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exit(1); |
266 |
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} |
285 |
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exit(1); |
286 |
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} |
287 |
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/* map MacBeth colors to RGB space */ |
288 |
< |
for (i = 0; i < 24; i++) |
288 |
> |
for (i = 0; i < 24; i++) { |
289 |
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xyY2RGB(mbRGB[i], mbxyY[i]); |
290 |
+ |
scalecolor(mbRGB[i], irrad); |
291 |
+ |
} |
292 |
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} |
293 |
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|
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int |
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< |
chartndx(x, y, cvg) /* find color number for position */ |
296 |
> |
chartndx(x, y, np) /* find color number for position */ |
297 |
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int x, y; |
298 |
< |
double cvg; |
298 |
> |
int *np; |
299 |
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{ |
300 |
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double ipos[3], cpos[3]; |
301 |
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int ix, iy; |
302 |
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double fx, fy; |
245 |
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double cmin, cmax; |
303 |
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|
304 |
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ipos[0] = x; |
305 |
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ipos[1] = y; |
308 |
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cpos[0] /= cpos[2]; |
309 |
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cpos[1] /= cpos[2]; |
310 |
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if (cpos[0] < 0. || cpos[0] >= 6. || cpos[1] < 0. || cpos[1] >= 4.) |
311 |
< |
return(-1); |
311 |
> |
return(RG_BORD); |
312 |
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ix = cpos[0]; |
313 |
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iy = cpos[1]; |
314 |
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fx = cpos[0] - ix; |
315 |
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fy = cpos[1] - iy; |
316 |
< |
cmin = .5*(1.-cvg); |
317 |
< |
cmax = 1. - cmin; |
318 |
< |
if (fx < cmin || fx >= cmax || fy < cmin || fy >= cmax) |
319 |
< |
return(-1); |
320 |
< |
return(iy*6 + ix); |
316 |
> |
*np = iy*6 + ix; |
317 |
> |
if (fx >= 0.35 && fx < 0.65 && fy >= 0.35 && fy < 0.65) |
318 |
> |
return(RG_CENT); |
319 |
> |
if (fx < 0.05 || fx >= 0.95 || fy < 0.05 || fy >= 0.95) |
320 |
> |
return(RG_BORD); |
321 |
> |
if (fx >= 0.5) /* right side is corrected */ |
322 |
> |
return(RG_CORR); |
323 |
> |
return(RG_ORIG); /* left side is original */ |
324 |
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} |
325 |
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|
326 |
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|
330 |
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COLOR pval; |
331 |
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int ccount[24]; |
332 |
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double d; |
333 |
< |
int y; |
334 |
< |
register int x, i; |
333 |
> |
int y, i; |
334 |
> |
register int x; |
335 |
|
|
336 |
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scanln = (COLR *)malloc(xmax*sizeof(COLR)); |
337 |
|
if (scanln == NULL) { |
348 |
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progname); |
349 |
|
exit(1); |
350 |
|
} |
351 |
< |
for (x = 0; x < xmax; x++) { |
352 |
< |
i = chartndx(x, y, CENTCVG); |
293 |
< |
if (i >= 0) { |
351 |
> |
for (x = 0; x < xmax; x++) |
352 |
> |
if (chartndx(x, y, &i) == RG_CENT) { |
353 |
|
colr_color(pval, scanln[x]); |
354 |
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addcolor(inpRGB[i], pval); |
355 |
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ccount[i]++; |
356 |
|
} |
298 |
– |
} |
357 |
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} |
358 |
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for (i = 0; i < 24; i++) { /* compute averages */ |
359 |
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if (ccount[i] == 0) |
378 |
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fgetval(stdin, 'f', &xyYin[0]) != 1 || |
379 |
|
fgetval(stdin, 'f', &xyYin[1]) != 1 || |
380 |
|
fgetval(stdin, 'f', &xyYin[2]) != 1 || |
381 |
< |
xyYin[0] < 0. | xyYin[0] > 1. | |
382 |
< |
xyYin[1] < 0. | xyYin[1] > 1.) { |
381 |
> |
xyYin[0] < 0. | xyYin[1] < 0. || |
382 |
> |
xyYin[0] + xyYin[1] > 1.) { |
383 |
|
fprintf(stderr, "%s: bad color input data\n", |
384 |
|
progname); |
385 |
|
exit(1); |
417 |
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bresp(y, x) /* piecewise linear interpolation of primaries */ |
418 |
|
COLOR y, x; |
419 |
|
{ |
362 |
– |
double cv[3]; |
420 |
|
register int i, n; |
421 |
|
|
422 |
|
for (i = 0; i < 3; i++) { |
423 |
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for (n = 0; n < NMBNEU-2; n++) |
424 |
|
if (colval(x,i) < colval(bramp[n+1][0],i)) |
425 |
|
break; |
426 |
< |
cv[i] = ((colval(bramp[n+1][0],i) - colval(x,i)) * |
426 |
> |
colval(y,i) = ((colval(bramp[n+1][0],i) - colval(x,i)) * |
427 |
|
colval(bramp[n][1],i) + |
428 |
|
(colval(x,i) - colval(bramp[n][0],i)) * |
429 |
|
colval(bramp[n+1][1],i)) / |
430 |
|
(colval(bramp[n+1][0],i) - colval(bramp[n][0],i)); |
374 |
– |
if (cv[i] < 0.) cv[i] = 0.; |
431 |
|
} |
376 |
– |
setcolor(y, cv[0], cv[1], cv[2]); |
432 |
|
} |
433 |
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|
434 |
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|
435 |
|
compute() /* compute color mapping */ |
436 |
|
{ |
437 |
< |
COLOR clrin[NMBMOD], clrout[NMBMOD]; |
437 |
> |
COLOR clrin[24], clrout[24]; |
438 |
> |
long cflags; |
439 |
> |
COLOR ctmp; |
440 |
|
register int i, n; |
441 |
|
/* did we get what we need? */ |
442 |
|
if ((inpflags & REQFLGS) != REQFLGS) { |
449 |
|
copycolor(bramp[i][0], inpRGB[mbneu[i]]); |
450 |
|
copycolor(bramp[i][1], mbRGB[mbneu[i]]); |
451 |
|
} |
452 |
< |
/* compute color matrix */ |
453 |
< |
for (n = 0, i = 0; i < NMBMOD; i++) |
454 |
< |
if (inpflags & 1L<<mbmod[i]) { |
455 |
< |
bresp(clrin[n], inpRGB[mbmod[i]]); |
456 |
< |
copycolor(clrout[n], mbRGB[mbmod[i]]); |
457 |
< |
n++; |
452 |
> |
/* compute color space gamut */ |
453 |
> |
if (scanning) { |
454 |
> |
copycolor(colmin, cblack); |
455 |
> |
copycolor(colmax, cwhite); |
456 |
> |
scalecolor(colmax, irrad); |
457 |
> |
} else |
458 |
> |
for (i = 0; i < 3; i++) { |
459 |
> |
colval(colmin,i) = colval(bramp[0][0],i) - |
460 |
> |
colval(bramp[0][1],i) * |
461 |
> |
(colval(bramp[1][0],i)-colval(bramp[0][0],i)) / |
462 |
> |
(colval(bramp[1][1],i)-colval(bramp[1][0],i)); |
463 |
> |
colval(colmax,i) = colval(bramp[NMBNEU-2][0],i) + |
464 |
> |
(1.-colval(bramp[NMBNEU-2][1],i)) * |
465 |
> |
(colval(bramp[NMBNEU-1][0],i) - |
466 |
> |
colval(bramp[NMBNEU-2][0],i)) / |
467 |
> |
(colval(bramp[NMBNEU-1][1],i) - |
468 |
> |
colval(bramp[NMBNEU-2][1],i)); |
469 |
|
} |
470 |
< |
compsoln(clrin, clrout, n); |
470 |
> |
/* compute color mapping */ |
471 |
> |
do { |
472 |
> |
cflags = inpflags & ~gmtflags; |
473 |
> |
n = 0; /* compute transform matrix */ |
474 |
> |
for (i = 0; i < 24; i++) |
475 |
> |
if (cflags & 1L<<i) { |
476 |
> |
bresp(clrin[n], inpRGB[i]); |
477 |
> |
copycolor(clrout[n], mbRGB[i]); |
478 |
> |
n++; |
479 |
> |
} |
480 |
> |
compsoln(clrin, clrout, n); |
481 |
> |
if (irrad > 0.99 && irrad < 1.01) /* check gamut */ |
482 |
> |
for (i = 0; i < 24; i++) |
483 |
> |
if (cflags & 1L<<i && cvtcolor(ctmp, mbRGB[i])) |
484 |
> |
gmtflags |= 1L<<i; |
485 |
> |
} while (cflags & gmtflags); |
486 |
> |
if (gmtflags & MODFLGS) |
487 |
> |
fprintf(stderr, |
488 |
> |
"%s: warning - some moderate colors are out of gamut\n", |
489 |
> |
progname); |
490 |
|
} |
491 |
|
|
492 |
|
|
493 |
< |
putmapping() /* put out color mapping for pcomb -f */ |
493 |
> |
putmapping() /* put out color mapping */ |
494 |
|
{ |
495 |
|
static char cchar[3] = {'r', 'g', 'b'}; |
496 |
|
register int i, j; |
504 |
|
for (i = 0; i < NMBNEU; i++) |
505 |
|
printf(",%g", colval(bramp[i][1],j)); |
506 |
|
printf(");\n"); |
420 |
– |
printf("%c = %ci(1);\n", cchar[j], cchar[j]); |
507 |
|
printf("%cfi(n) = if(n-%g, %d, if(%cxa(n+1)-%c, n, %cfi(n+1)));\n", |
508 |
|
cchar[j], NMBNEU-1.5, NMBNEU-1, cchar[j], |
509 |
|
cchar[j], cchar[j]); |
510 |
|
printf("%cndx = %cfi(1);\n", cchar[j], cchar[j]); |
511 |
< |
printf("%cn = ((%cxa(%cndx+1)-%c)*%cya(%cndx) + ", |
512 |
< |
cchar[j], cchar[j], cchar[j], |
513 |
< |
cchar[j], cchar[j], cchar[j]); |
511 |
> |
printf("%c%c = ((%cxa(%cndx+1)-%c)*%cya(%cndx) + ", |
512 |
> |
cchar[j], scanning?'n':'o', cchar[j], |
513 |
> |
cchar[j], cchar[j], cchar[j], cchar[j]); |
514 |
|
printf("(%c-%cxa(%cndx))*%cya(%cndx+1)) /\n", |
515 |
|
cchar[j], cchar[j], cchar[j], |
516 |
|
cchar[j], cchar[j]); |
518 |
|
cchar[j], cchar[j], cchar[j], cchar[j]); |
519 |
|
} |
520 |
|
/* print color mapping */ |
521 |
< |
printf("ro = %g*rn + %g*gn + %g*bn ;\n", |
522 |
< |
solmat[0][0], solmat[0][1], solmat[0][2]); |
523 |
< |
printf("go = %g*rn + %g*gn + %g*bn ;\n", |
524 |
< |
solmat[1][0], solmat[1][1], solmat[1][2]); |
525 |
< |
printf("bo = %g*rn + %g*gn + %g*bn ;\n", |
526 |
< |
solmat[2][0], solmat[2][1], solmat[2][2]); |
521 |
> |
if (scanning) { |
522 |
> |
printf("r = ri(1); g = gi(1); b = bi(1);\n"); |
523 |
> |
printf("ro = %g*rn + %g*gn + %g*bn ;\n", |
524 |
> |
solmat[0][0], solmat[0][1], solmat[0][2]); |
525 |
> |
printf("go = %g*rn + %g*gn + %g*bn ;\n", |
526 |
> |
solmat[1][0], solmat[1][1], solmat[1][2]); |
527 |
> |
printf("bo = %g*rn + %g*gn + %g*bn ;\n", |
528 |
> |
solmat[2][0], solmat[2][1], solmat[2][2]); |
529 |
> |
} else { |
530 |
> |
printf("r1 = ri(1); g1 = gi(1); b1 = bi(1);\n"); |
531 |
> |
printf("r = %g*r1 + %g*g1 + %g*b1 ;\n", |
532 |
> |
solmat[0][0], solmat[0][1], solmat[0][2]); |
533 |
> |
printf("g = %g*r1 + %g*g1 + %g*b1 ;\n", |
534 |
> |
solmat[1][0], solmat[1][1], solmat[1][2]); |
535 |
> |
printf("b = %g*r1 + %g*g1 + %g*b1 ;\n", |
536 |
> |
solmat[2][0], solmat[2][1], solmat[2][2]); |
537 |
> |
} |
538 |
|
} |
539 |
|
|
540 |
|
|
548 |
|
double colv[3], rowv[3]; |
549 |
|
register int i, j, k; |
550 |
|
|
551 |
< |
if (n < 3 | n > NMBMOD) { |
552 |
< |
fprintf(stderr, "%s: bad number of colors to match\n", progname); |
551 |
> |
if (n < 3) { |
552 |
> |
fprintf(stderr, "%s: too few colors to match!\n", progname); |
553 |
|
exit(1); |
554 |
|
} |
555 |
|
if (n == 3) |
598 |
|
} |
599 |
|
|
600 |
|
|
601 |
+ |
cwarp() /* compute color warp map */ |
602 |
+ |
{ |
603 |
+ |
register int i; |
604 |
+ |
|
605 |
+ |
if ((wcor = new3dw(W3EXACT)) == NULL) |
606 |
+ |
goto memerr; |
607 |
+ |
for (i = 0; i < 24; i++) |
608 |
+ |
if (!add3dpt(wcor, inpRGB[i], mbRGB[i])) |
609 |
+ |
goto memerr; |
610 |
+ |
return; |
611 |
+ |
memerr: |
612 |
+ |
perror(progname); |
613 |
+ |
exit(1); |
614 |
+ |
} |
615 |
+ |
|
616 |
+ |
|
617 |
+ |
int |
618 |
|
cvtcolor(cout, cin) /* convert color according to our mapping */ |
619 |
|
COLOR cout, cin; |
620 |
|
{ |
621 |
< |
double r, g, b; |
621 |
> |
COLOR ctmp; |
622 |
> |
int clipped; |
623 |
|
|
624 |
< |
bresp(cout, cin); |
625 |
< |
r = colval(cout,0)*solmat[0][0] + colval(cout,1)*solmat[0][1] |
626 |
< |
+ colval(cout,2)*solmat[0][2]; |
627 |
< |
if (r < 0) r = 0; |
628 |
< |
g = colval(cout,0)*solmat[1][0] + colval(cout,1)*solmat[1][1] |
629 |
< |
+ colval(cout,2)*solmat[1][2]; |
630 |
< |
if (g < 0) g = 0; |
631 |
< |
b = colval(cout,0)*solmat[2][0] + colval(cout,1)*solmat[2][1] |
632 |
< |
+ colval(cout,2)*solmat[2][2]; |
633 |
< |
if (b < 0) b = 0; |
634 |
< |
setcolor(cout, r, g, b); |
624 |
> |
if (wcor != NULL) { |
625 |
> |
clipped = warp3d(cout, cin, wcor); |
626 |
> |
clipped |= clipgamut(cout,bright(cout),CGAMUT,colmin,colmax); |
627 |
> |
} else if (scanning) { |
628 |
> |
bresp(ctmp, cin); |
629 |
> |
clipped = cresp(cout, ctmp); |
630 |
> |
} else { |
631 |
> |
clipped = cresp(ctmp, cin); |
632 |
> |
bresp(cout, ctmp); |
633 |
> |
} |
634 |
> |
return(clipped); |
635 |
|
} |
636 |
|
|
637 |
|
|
638 |
+ |
int |
639 |
+ |
cresp(cout, cin) /* transform color according to matrix */ |
640 |
+ |
COLOR cout, cin; |
641 |
+ |
{ |
642 |
+ |
colortrans(cout, solmat, cin); |
643 |
+ |
return(clipgamut(cout, bright(cout), CGAMUT, colmin, colmax)); |
644 |
+ |
} |
645 |
+ |
|
646 |
+ |
|
647 |
|
xyY2RGB(rgbout, xyYin) /* convert xyY to RGB */ |
648 |
|
COLOR rgbout; |
649 |
|
register float xyYin[3]; |
655 |
|
ctmp[0] = xyYin[0] * d; |
656 |
|
ctmp[1] = xyYin[2]; |
657 |
|
ctmp[2] = (1. - xyYin[0] - xyYin[1]) * d; |
658 |
< |
cie_rgb(rgbout, ctmp); |
658 |
> |
/* allow negative values */ |
659 |
> |
colortrans(rgbout, xyz2rgbmat, ctmp); |
660 |
|
} |
661 |
|
|
662 |
|
|
663 |
|
picdebug() /* put out debugging picture */ |
664 |
|
{ |
665 |
+ |
static COLOR blkcol = BLKCOLOR; |
666 |
|
COLOR *scan; |
667 |
< |
int y; |
668 |
< |
register int x, i; |
667 |
> |
int y, i; |
668 |
> |
register int x, rg; |
669 |
|
|
670 |
|
if (fseek(stdin, 0L, 0) == EOF) { |
671 |
|
fprintf(stderr, "%s: cannot seek on input picture\n", progname); |
691 |
|
exit(1); |
692 |
|
} |
693 |
|
for (x = 0; x < xmax; x++) { |
694 |
< |
i = chartndx(x, y, CENTCVG); |
695 |
< |
if (i < 0) |
694 |
> |
rg = chartndx(x, y, &i); |
695 |
> |
if (rg == RG_CENT) { |
696 |
> |
if (!(1L<<i & gmtflags) || (x+y)&07) { |
697 |
> |
copycolor(scan[x], mbRGB[i]); |
698 |
> |
clipgamut(scan[x], bright(scan[x]), |
699 |
> |
CGAMUT, colmin, colmax); |
700 |
> |
} else |
701 |
> |
copycolor(scan[x], blkcol); |
702 |
> |
} else if (rg == RG_CORR) |
703 |
|
cvtcolor(scan[x], scan[x]); |
704 |
< |
else |
705 |
< |
copycolor(scan[x], mbRGB[i]); |
704 |
> |
else if (rg != RG_ORIG) |
705 |
> |
copycolor(scan[x], blkcol); |
706 |
|
} |
707 |
|
if (fwritescan(scan, xmax, debugfp) < 0) { |
708 |
|
fprintf(stderr, "%s: error writing debugging picture\n", |
719 |
|
clrdebug() /* put out debug picture from color input */ |
720 |
|
{ |
721 |
|
static COLR blkclr = BLKCOLR; |
722 |
< |
COLR mbclr[24], cvclr[24]; |
722 |
> |
COLR mbclr[24], cvclr[24], orclr[24]; |
723 |
|
COLR *scan; |
724 |
< |
COLOR ctmp; |
725 |
< |
int y; |
726 |
< |
register int i, x; |
724 |
> |
COLOR ctmp, ct2; |
725 |
> |
int y, i; |
726 |
> |
register int x, rg; |
727 |
|
/* convert colors */ |
728 |
|
for (i = 0; i < 24; i++) { |
729 |
< |
setcolr(mbclr[i], colval(mbRGB[i],RED), |
730 |
< |
colval(mbRGB[i],GRN), colval(mbRGB[i],BLU)); |
729 |
> |
copycolor(ctmp, mbRGB[i]); |
730 |
> |
clipgamut(ctmp, bright(ctmp), CGAMUT, cblack, cwhite); |
731 |
> |
setcolr(mbclr[i], colval(ctmp,RED), |
732 |
> |
colval(ctmp,GRN), colval(ctmp,BLU)); |
733 |
|
if (inpflags & 1L<<i) { |
734 |
< |
cvtcolor(ctmp, inpRGB[i]); |
735 |
< |
setcolr(cvclr[i], colval(ctmp,RED), |
734 |
> |
copycolor(ctmp, inpRGB[i]); |
735 |
> |
clipgamut(ctmp, bright(ctmp), CGAMUT, cblack, cwhite); |
736 |
> |
setcolr(orclr[i], colval(ctmp,RED), |
737 |
|
colval(ctmp,GRN), colval(ctmp,BLU)); |
738 |
+ |
if (rawmap) |
739 |
+ |
copycolr(cvclr[i], mbclr[i]); |
740 |
+ |
else { |
741 |
+ |
bresp(ctmp, inpRGB[i]); |
742 |
+ |
colortrans(ct2, solmat, ctmp); |
743 |
+ |
clipgamut(ct2, bright(ct2), CGAMUT, |
744 |
+ |
cblack, cwhite); |
745 |
+ |
setcolr(cvclr[i], colval(ct2,RED), |
746 |
+ |
colval(ct2,GRN), |
747 |
+ |
colval(ct2,BLU)); |
748 |
+ |
} |
749 |
|
} |
750 |
|
} |
751 |
|
/* allocate scanline */ |
760 |
|
fprtresolu(xmax, ymax, debugfp); |
761 |
|
/* write debug picture */ |
762 |
|
for (y = ymax-1; y >= 0; y--) { |
763 |
< |
for (x = 0; x < xmax; x++) |
764 |
< |
if ((i = chartndx(x, y, CENTCVG)) >= 0) |
765 |
< |
copycolr(scan[x], mbclr[i]); |
766 |
< |
else if ((i = chartndx(x, y, FULLCVG)) >= 0 && |
767 |
< |
inpflags & 1L<<i) |
768 |
< |
copycolr(scan[x], cvclr[i]); |
769 |
< |
else |
763 |
> |
for (x = 0; x < xmax; x++) { |
764 |
> |
rg = chartndx(x, y, &i); |
765 |
> |
if (rg == RG_CENT) { |
766 |
> |
if (!(1L<<i & gmtflags) || (x+y)&07) |
767 |
> |
copycolr(scan[x], mbclr[i]); |
768 |
> |
else |
769 |
> |
copycolr(scan[x], blkclr); |
770 |
> |
} else if (rg == RG_BORD || !(1L<<i & inpflags)) |
771 |
|
copycolr(scan[x], blkclr); |
772 |
+ |
else if (rg == RG_ORIG) |
773 |
+ |
copycolr(scan[x], orclr[i]); |
774 |
+ |
else /* rg == RG_CORR */ |
775 |
+ |
copycolr(scan[x], cvclr[i]); |
776 |
+ |
} |
777 |
|
if (fwritecolrs(scan, xmax, debugfp) < 0) { |
778 |
|
fprintf(stderr, "%s: error writing debugging picture\n", |
779 |
|
progname); |
783 |
|
/* clean up */ |
784 |
|
fclose(debugfp); |
785 |
|
free((char *)scan); |
786 |
+ |
} |
787 |
+ |
|
788 |
+ |
|
789 |
+ |
getpos(name, bnds, fp) /* get boundary position */ |
790 |
+ |
char *name; |
791 |
+ |
int bnds[2]; |
792 |
+ |
FILE *fp; |
793 |
+ |
{ |
794 |
+ |
char buf[64]; |
795 |
+ |
|
796 |
+ |
fprintf(stderr, "\tSelect corner: %s\n", name); |
797 |
+ |
if (fgets(buf, sizeof(buf), fp) == NULL || |
798 |
+ |
sscanf(buf, "%d %d", &bnds[0], &bnds[1]) != 2) { |
799 |
+ |
fprintf(stderr, "%s: read error from display process\n", |
800 |
+ |
progname); |
801 |
+ |
exit(1); |
802 |
+ |
} |
803 |
+ |
} |
804 |
+ |
|
805 |
+ |
|
806 |
+ |
pickchartpos(pfn) /* display picture and pick chart location */ |
807 |
+ |
char *pfn; |
808 |
+ |
{ |
809 |
+ |
char combuf[512]; |
810 |
+ |
FILE *pfp; |
811 |
+ |
|
812 |
+ |
sprintf(combuf, DISPCOM, pfn); |
813 |
+ |
if ((pfp = popen(combuf, "r")) == NULL) { |
814 |
+ |
perror(combuf); |
815 |
+ |
exit(1); |
816 |
+ |
} |
817 |
+ |
fputs("Use middle mouse button to select chart corners:\n", stderr); |
818 |
+ |
getpos("upper left (dark skin)", bounds[0], pfp); |
819 |
+ |
getpos("upper right (bluish green)", bounds[1], pfp); |
820 |
+ |
getpos("lower left (white)", bounds[2], pfp); |
821 |
+ |
getpos("lower right (black)", bounds[3], pfp); |
822 |
+ |
fputs("Got it -- quit display program.\n", stderr); |
823 |
+ |
pclose(pfp); |
824 |
|
} |