1 |
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/* Copyright (c) 1995 Regents of the University of California */ |
1 |
> |
/* Copyright (c) 1997 Regents of the University of California */ |
2 |
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#ifndef lint |
4 |
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static char SCCSid[] = "$SunId$ LBL"; |
7 |
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/* |
8 |
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* Calibrate a scanned MacBeth Color Checker Chart |
9 |
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* |
10 |
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* Produce a .cal file suitable for use with pcomb. |
10 |
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* Produce a .cal file suitable for use with pcomb, |
11 |
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* or .cwp file suitable for use with pcwarp. |
12 |
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* |
13 |
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* Warping code depends on conformance of COLOR and W3VEC types. |
14 |
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*/ |
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|
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#include <stdio.h> |
17 |
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#include <math.h> |
18 |
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#ifdef MSDOS |
19 |
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#include <fcntl.h> |
20 |
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#endif |
21 |
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#include "color.h" |
22 |
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#include "resolu.h" |
23 |
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#include "pmap.h" |
24 |
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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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|
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#define NMBMOD 17 /* 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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Orange,PurplishBlue,ModerateRed,Purple,YellowGreen, |
84 |
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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| \ |
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,OrangeYellow |
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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|
92 |
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#define UNSFLGS (1L<<DarkSkin|1L<<LightSkin|1L<<BlueSky|1L<<Foliage| \ |
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1L<<BluishGreen|1L<<ModerateRed) |
94 |
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|
95 |
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#define REQFLGS NEUFLGS /* need these colors */ |
96 |
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#define MODFLGS (NEUFLGS|UNSFLGS) /* should be in gamut */ |
97 |
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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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int scanning = 1; /* scanned input (or recorded output)? */ |
104 |
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double irrad = 1.0; /* irradiance multiplication factor */ |
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int rawmap = 0; /* put out raw color mapping? */ |
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|
107 |
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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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|
111 |
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COLOR picRGB[24]; /* picture colors */ |
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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 */ |
116 |
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COLORMAT solmat; /* color mapping matrix */ |
117 |
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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 i; |
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|
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progname = argv[0]; |
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if (argc > 2 && !strcmp(argv[1], "-d")) { /* debug output */ |
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if ((debugfp = fopen(argv[2], "w")) == NULL) { |
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perror(argv[2]); |
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exit(1); |
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} |
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for (i = 1; i < argc && argv[i][0] == '-'; i++) |
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switch (argv[i][1]) { |
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case 'd': /* debug output */ |
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i++; |
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if (badarg(argc-i, argv+i, "s")) |
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goto userr; |
140 |
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if ((debugfp = fopen(argv[i], "w")) == NULL) { |
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perror(argv[i]); |
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exit(1); |
143 |
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} |
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#ifdef MSDOS |
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setmode(fileno(debugfp), O_BINARY); |
145 |
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setmode(fileno(debugfp), O_BINARY); |
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#endif |
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newheader("RADIANCE", debugfp); |
148 |
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printargs(argc, argv, debugfp); |
149 |
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argv += 2; |
150 |
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argc -= 2; |
151 |
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} |
152 |
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if (argc != 3 && argc != 11) |
153 |
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goto userr; |
154 |
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if (strcmp(argv[1], "-") && freopen(argv[1], "r", stdin) == NULL) { |
155 |
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perror(argv[1]); |
147 |
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newheader("RADIANCE", debugfp); /* start */ |
148 |
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printargs(argc, argv, debugfp); /* header */ |
149 |
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break; |
150 |
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case 'p': /* picture position */ |
151 |
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if (badarg(argc-i-1, argv+i+1, "iiiiiiii")) |
152 |
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goto userr; |
153 |
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bounds[0][0] = atoi(argv[++i]); |
154 |
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bounds[0][1] = atoi(argv[++i]); |
155 |
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bounds[1][0] = atoi(argv[++i]); |
156 |
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bounds[1][1] = atoi(argv[++i]); |
157 |
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bounds[2][0] = atoi(argv[++i]); |
158 |
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bounds[2][1] = atoi(argv[++i]); |
159 |
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bounds[3][0] = atoi(argv[++i]); |
160 |
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bounds[3][1] = atoi(argv[++i]); |
161 |
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scanning = 2; |
162 |
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break; |
163 |
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case 'i': /* irradiance factor */ |
164 |
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i++; |
165 |
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if (badarg(argc-i, argv+i, "f")) |
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goto userr; |
167 |
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irrad = atof(argv[i]); |
168 |
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break; |
169 |
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case 'm': /* raw map output */ |
170 |
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rawmap = 1; |
171 |
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break; |
172 |
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case 'c': /* color input */ |
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scanning = 0; |
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break; |
175 |
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default: |
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goto userr; |
177 |
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} |
178 |
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/* open files */ |
179 |
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if (i < argc && freopen(argv[i], "r", stdin) == NULL) { |
180 |
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perror(argv[i]); |
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exit(1); |
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} |
183 |
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if (strcmp(argv[2], "-") && freopen(argv[2], "w", stdout) == NULL) { |
184 |
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perror(argv[2]); |
183 |
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if (i+1 < argc && freopen(argv[i+1], "w", stdout) == NULL) { |
184 |
> |
perror(argv[i+1]); |
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exit(1); |
186 |
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} |
187 |
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if (scanning) { /* load input picture header */ |
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#ifdef MSDOS |
189 |
< |
setmode(fileno(stdin), O_BINARY); |
189 |
> |
setmode(fileno(stdin), O_BINARY); |
190 |
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#endif |
191 |
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if (checkheader(stdin, COLRFMT, NULL) < 0 || |
192 |
< |
fgetresolu(&xmax, &ymax, stdin) < 0) { |
193 |
< |
fprintf(stderr, "%s: bad input picture\n", progname); |
194 |
< |
exit(1); |
145 |
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} |
146 |
< |
/* get chart boundaries */ |
147 |
< |
if (argc == 11) { |
148 |
< |
for (i = 0; i < 4; i++) { |
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if (!isint(argv[2*i+3]) | !isint(argv[2*i+4])) |
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goto userr; |
151 |
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bounds[i][0] = atoi(argv[2*i+3]); |
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bounds[i][1] = atoi(argv[2*i+4]); |
191 |
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if (checkheader(stdin, COLRFMT, NULL) < 0 || |
192 |
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fgetresolu(&xmax, &ymax, stdin) < 0) { |
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fprintf(stderr, "%s: bad input picture\n", progname); |
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exit(1); |
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} |
196 |
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} else { |
196 |
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} else { /* else set default xmax and ymax */ |
197 |
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xmax = 512; |
198 |
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ymax = 2*512/3; |
199 |
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} |
200 |
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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 */ |
207 |
< |
getcolors(); /* get picture colors */ |
207 |
> |
if (scanning) /* get picture colors */ |
208 |
> |
getpicture(); |
209 |
> |
else |
210 |
> |
getcolors(); |
211 |
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compute(); /* compute color mapping */ |
212 |
< |
/* print comment */ |
213 |
< |
printf("{ Color correction file computed by %s }\n", progname); |
214 |
< |
printf("{ from scanned MacBetch color chart %s }\n", argv[1]); |
215 |
< |
putmapping(); /* put out color mapping */ |
216 |
< |
putdebug(); /* put out debug picture */ |
212 |
> |
if (rawmap) { /* print out raw correspondence */ |
213 |
> |
register int j; |
214 |
> |
|
215 |
> |
printf("# Color correspondence produced by:\n#\t\t"); |
216 |
> |
printargs(argc, argv, stdout); |
217 |
> |
printf("#\tUsage: pcwarp %s uncorrected.pic > corrected.pic\n", |
218 |
> |
i+1 < argc ? argv[i+1] : "{this_file}"); |
219 |
> |
printf("#\t Or: pcond [options] -m %s orig.pic > output.pic\n", |
220 |
> |
i+1 < argc ? argv[i+1] : "{this_file}"); |
221 |
> |
for (j = 0; j < 24; j++) |
222 |
> |
printf("%f %f %f %f %f %f\n", |
223 |
> |
colval(inpRGB[j],RED), colval(inpRGB[j],GRN), |
224 |
> |
colval(inpRGB[j],BLU), colval(mbRGB[j],RED), |
225 |
> |
colval(mbRGB[j],GRN), colval(mbRGB[j],BLU)); |
226 |
> |
if (scanning && debugfp != NULL) |
227 |
> |
cwarp(); /* color warp for debugging */ |
228 |
> |
} else { /* print color mapping */ |
229 |
> |
/* print header */ |
230 |
> |
printf("{\n\tColor correction file computed by:\n\t\t"); |
231 |
> |
printargs(argc, argv, stdout); |
232 |
> |
printf("\n\tUsage: pcomb -f %s uncorrected.pic > corrected.pic\n", |
233 |
> |
i+1 < argc ? argv[i+1] : "{this_file}"); |
234 |
> |
if (!scanning) |
235 |
> |
printf("\t Or: pcond [options] -f %s orig.pic > output.pic\n", |
236 |
> |
i+1 < argc ? argv[i+1] : "{this_file}"); |
237 |
> |
printf("}\n"); |
238 |
> |
putmapping(); /* put out color mapping */ |
239 |
> |
} |
240 |
> |
if (debugfp != NULL) /* put out debug picture */ |
241 |
> |
if (scanning) |
242 |
> |
picdebug(); |
243 |
> |
else |
244 |
> |
clrdebug(); |
245 |
|
exit(0); |
246 |
|
userr: |
247 |
< |
fprintf(stderr, "Usage: %s [-d dbg.pic] input.pic output.cal [xul yul xur yur xll yll xlr ylr]\n", |
247 |
> |
fprintf(stderr, |
248 |
> |
"Usage: %s [-d dbg.pic][-p xul yul xur yur xll yll xlr ylr][-i irrad][-m] input.pic [output.{cal|cwp}]\n", |
249 |
|
progname); |
250 |
+ |
fprintf(stderr, " or: %s [-d dbg.pic][-i irrad][-m] -c [xyY.dat [output.{cal|cwp}]]\n", |
251 |
+ |
progname); |
252 |
|
exit(1); |
253 |
|
} |
254 |
|
|
256 |
|
init() /* initialize */ |
257 |
|
{ |
258 |
|
double quad[4][2]; |
259 |
+ |
register int i; |
260 |
|
/* make coordinate transformation */ |
261 |
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quad[0][0] = bounds[0][0]; |
262 |
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quad[0][1] = bounds[0][1]; |
271 |
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fprintf(stderr, "%s: bad chart boundaries\n", progname); |
272 |
|
exit(1); |
273 |
|
} |
274 |
+ |
/* map MacBeth colors to RGB space */ |
275 |
+ |
for (i = 0; i < 24; i++) { |
276 |
+ |
xyY2RGB(mbRGB[i], mbxyY[i]); |
277 |
+ |
scalecolor(mbRGB[i], irrad); |
278 |
+ |
} |
279 |
|
} |
280 |
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|
281 |
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|
282 |
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int |
283 |
< |
chartndx(x, y) /* find color number for position */ |
283 |
> |
chartndx(x, y, np) /* find color number for position */ |
284 |
|
int x, y; |
285 |
+ |
int *np; |
286 |
|
{ |
287 |
|
double ipos[3], cpos[3]; |
288 |
|
int ix, iy; |
295 |
|
cpos[0] /= cpos[2]; |
296 |
|
cpos[1] /= cpos[2]; |
297 |
|
if (cpos[0] < 0. || cpos[0] >= 6. || cpos[1] < 0. || cpos[1] >= 4.) |
298 |
< |
return(-1); |
298 |
> |
return(RG_BORD); |
299 |
|
ix = cpos[0]; |
300 |
|
iy = cpos[1]; |
301 |
|
fx = cpos[0] - ix; |
302 |
|
fy = cpos[1] - iy; |
303 |
< |
if (fx < .35 || fx >= .65 || fy < .35 || fy >= .65) |
304 |
< |
return(-1); |
305 |
< |
return(iy*6 + ix); |
303 |
> |
*np = iy*6 + ix; |
304 |
> |
if (fx >= 0.35 && fx < 0.65 && fy >= 0.35 && fy < 0.65) |
305 |
> |
return(RG_CENT); |
306 |
> |
if (fx < 0.05 || fx >= 0.95 || fy < 0.05 || fy >= 0.95) |
307 |
> |
return(RG_BORD); |
308 |
> |
if (fx >= 0.5) /* right side is corrected */ |
309 |
> |
return(RG_CORR); |
310 |
> |
return(RG_ORIG); /* left side is original */ |
311 |
|
} |
312 |
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|
313 |
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|
314 |
< |
getcolors() /* load in picture colors */ |
314 |
> |
getpicture() /* load in picture colors */ |
315 |
|
{ |
316 |
|
COLR *scanln; |
317 |
|
COLOR pval; |
318 |
|
int ccount[24]; |
319 |
|
double d; |
320 |
< |
int y; |
321 |
< |
register int x, i; |
320 |
> |
int y, i; |
321 |
> |
register int x; |
322 |
|
|
323 |
|
scanln = (COLR *)malloc(xmax*sizeof(COLR)); |
324 |
|
if (scanln == NULL) { |
326 |
|
exit(1); |
327 |
|
} |
328 |
|
for (i = 0; i < 24; i++) { |
329 |
< |
setcolor(picRGB[i], 0., 0., 0.); |
329 |
> |
setcolor(inpRGB[i], 0., 0., 0.); |
330 |
|
ccount[i] = 0; |
331 |
|
} |
332 |
|
for (y = ymax-1; y >= 0; y--) { |
335 |
|
progname); |
336 |
|
exit(1); |
337 |
|
} |
338 |
< |
for (x = 0; x < xmax; x++) { |
339 |
< |
i = chartndx(x, y); |
248 |
< |
if (i >= 0) { |
338 |
> |
for (x = 0; x < xmax; x++) |
339 |
> |
if (chartndx(x, y, &i) == RG_CENT) { |
340 |
|
colr_color(pval, scanln[x]); |
341 |
< |
addcolor(picRGB[i], pval); |
341 |
> |
addcolor(inpRGB[i], pval); |
342 |
|
ccount[i]++; |
343 |
|
} |
344 |
+ |
} |
345 |
+ |
for (i = 0; i < 24; i++) { /* compute averages */ |
346 |
+ |
if (ccount[i] == 0) |
347 |
+ |
continue; |
348 |
+ |
d = 1./ccount[i]; |
349 |
+ |
scalecolor(inpRGB[i], d); |
350 |
+ |
inpflags |= 1L<<i; |
351 |
+ |
} |
352 |
+ |
free((char *)scanln); |
353 |
+ |
} |
354 |
+ |
|
355 |
+ |
|
356 |
+ |
getcolors() /* get xyY colors from standard input */ |
357 |
+ |
{ |
358 |
+ |
int gotwhite = 0; |
359 |
+ |
COLOR whiteclr; |
360 |
+ |
int n; |
361 |
+ |
float xyYin[3]; |
362 |
+ |
|
363 |
+ |
while (fgetval(stdin, 'i', &n) == 1) { /* read colors */ |
364 |
+ |
if (n < 0 | n > 24 || |
365 |
+ |
fgetval(stdin, 'f', &xyYin[0]) != 1 || |
366 |
+ |
fgetval(stdin, 'f', &xyYin[1]) != 1 || |
367 |
+ |
fgetval(stdin, 'f', &xyYin[2]) != 1 || |
368 |
+ |
xyYin[0] < 0. | xyYin[1] < 0. || |
369 |
+ |
xyYin[0] + xyYin[1] > 1.) { |
370 |
+ |
fprintf(stderr, "%s: bad color input data\n", |
371 |
+ |
progname); |
372 |
+ |
exit(1); |
373 |
|
} |
374 |
+ |
if (n == 0) { /* calibration white */ |
375 |
+ |
xyY2RGB(whiteclr, xyYin); |
376 |
+ |
gotwhite++; |
377 |
+ |
} else { /* standard color */ |
378 |
+ |
n--; |
379 |
+ |
xyY2RGB(inpRGB[n], xyYin); |
380 |
+ |
inpflags |= 1L<<n; |
381 |
+ |
} |
382 |
|
} |
383 |
< |
for (i = 0; i < 24; i++) { |
384 |
< |
if (ccount[i] == 0) { |
385 |
< |
fprintf(stderr, "%s: bad chart boundaries\n", |
383 |
> |
/* normalize colors */ |
384 |
> |
if (!gotwhite) { |
385 |
> |
if (!(inpflags & 1L<<White)) { |
386 |
> |
fprintf(stderr, "%s: missing input for White\n", |
387 |
|
progname); |
388 |
|
exit(1); |
389 |
|
} |
390 |
< |
d = 1.0/ccount[i]; |
391 |
< |
scalecolor(picRGB[i], d); |
390 |
> |
setcolor(whiteclr, |
391 |
> |
colval(inpRGB[White],RED)/colval(mbRGB[White],RED), |
392 |
> |
colval(inpRGB[White],GRN)/colval(mbRGB[White],GRN), |
393 |
> |
colval(inpRGB[White],BLU)/colval(mbRGB[White],BLU)); |
394 |
|
} |
395 |
< |
free((char *)scanln); |
395 |
> |
for (n = 0; n < 24; n++) |
396 |
> |
if (inpflags & 1L<<n) |
397 |
> |
setcolor(inpRGB[n], |
398 |
> |
colval(inpRGB[n],RED)/colval(whiteclr,RED), |
399 |
> |
colval(inpRGB[n],GRN)/colval(whiteclr,GRN), |
400 |
> |
colval(inpRGB[n],BLU)/colval(whiteclr,BLU)); |
401 |
|
} |
402 |
|
|
403 |
|
|
404 |
|
bresp(y, x) /* piecewise linear interpolation of primaries */ |
405 |
|
COLOR y, x; |
406 |
|
{ |
271 |
– |
double cv[3]; |
407 |
|
register int i, n; |
408 |
|
|
409 |
|
for (i = 0; i < 3; i++) { |
410 |
< |
n = NMBNEU; |
411 |
< |
while (n > 0 && colval(x,i) < colval(bramp[--n][0],i)) |
412 |
< |
; |
413 |
< |
cv[i] = ((colval(bramp[n+1][0],i) - colval(x,i)) * |
410 |
> |
for (n = 0; n < NMBNEU-2; n++) |
411 |
> |
if (colval(x,i) < colval(bramp[n+1][0],i)) |
412 |
> |
break; |
413 |
> |
colval(y,i) = ((colval(bramp[n+1][0],i) - colval(x,i)) * |
414 |
|
colval(bramp[n][1],i) + |
415 |
|
(colval(x,i) - colval(bramp[n][0],i)) * |
416 |
|
colval(bramp[n+1][1],i)) / |
417 |
|
(colval(bramp[n+1][0],i) - colval(bramp[n][0],i)); |
283 |
– |
if (cv[i] < 0.) cv[i] = 0.; |
418 |
|
} |
285 |
– |
setcolor(y, cv[0], cv[1], cv[2]); |
419 |
|
} |
420 |
|
|
421 |
|
|
422 |
|
compute() /* compute color mapping */ |
423 |
|
{ |
424 |
< |
COLOR clrin[NMBMOD], clrout[NMBMOD]; |
424 |
> |
COLOR clrin[24], clrout[24]; |
425 |
> |
long cflags; |
426 |
|
COLOR ctmp; |
427 |
< |
double d; |
428 |
< |
register int i; |
429 |
< |
/* map MacBeth colors to RGB space */ |
430 |
< |
for (i = 0; i < 24; i++) { |
431 |
< |
d = mbxyY[i][2] / mbxyY[i][1]; |
432 |
< |
ctmp[0] = mbxyY[i][0] * d; |
299 |
< |
ctmp[1] = mbxyY[i][2]; |
300 |
< |
ctmp[2] = (1. - mbxyY[i][0] - mbxyY[i][1]) * d; |
301 |
< |
cie_rgb(mbRGB[i], ctmp); |
427 |
> |
register int i, n; |
428 |
> |
/* did we get what we need? */ |
429 |
> |
if ((inpflags & REQFLGS) != REQFLGS) { |
430 |
> |
fprintf(stderr, "%s: missing required input colors\n", |
431 |
> |
progname); |
432 |
> |
exit(1); |
433 |
|
} |
434 |
|
/* compute piecewise luminance curve */ |
435 |
|
for (i = 0; i < NMBNEU; i++) { |
436 |
< |
copycolor(bramp[i][0], picRGB[mbneu[i]]); |
436 |
> |
copycolor(bramp[i][0], inpRGB[mbneu[i]]); |
437 |
|
copycolor(bramp[i][1], mbRGB[mbneu[i]]); |
438 |
|
} |
439 |
< |
/* compute color matrix */ |
440 |
< |
for (i = 0; i < NMBMOD; i++) { |
441 |
< |
bresp(clrin[i], picRGB[mbmod[i]]); |
442 |
< |
copycolor(clrout[i], mbRGB[mbmod[i]]); |
443 |
< |
} |
444 |
< |
compsoln(clrin, clrout, NMBMOD); |
439 |
> |
/* compute color space gamut */ |
440 |
> |
if (scanning) { |
441 |
> |
copycolor(colmin, cblack); |
442 |
> |
copycolor(colmax, cwhite); |
443 |
> |
scalecolor(colmax, irrad); |
444 |
> |
} else |
445 |
> |
for (i = 0; i < 3; i++) { |
446 |
> |
colval(colmin,i) = colval(bramp[0][0],i) - |
447 |
> |
colval(bramp[0][1],i) * |
448 |
> |
(colval(bramp[1][0],i)-colval(bramp[0][0],i)) / |
449 |
> |
(colval(bramp[1][1],i)-colval(bramp[1][0],i)); |
450 |
> |
colval(colmax,i) = colval(bramp[NMBNEU-2][0],i) + |
451 |
> |
(1.-colval(bramp[NMBNEU-2][1],i)) * |
452 |
> |
(colval(bramp[NMBNEU-1][0],i) - |
453 |
> |
colval(bramp[NMBNEU-2][0],i)) / |
454 |
> |
(colval(bramp[NMBNEU-1][1],i) - |
455 |
> |
colval(bramp[NMBNEU-2][1],i)); |
456 |
> |
} |
457 |
> |
/* compute color mapping */ |
458 |
> |
do { |
459 |
> |
cflags = inpflags & ~gmtflags; |
460 |
> |
n = 0; /* compute transform matrix */ |
461 |
> |
for (i = 0; i < 24; i++) |
462 |
> |
if (cflags & 1L<<i) { |
463 |
> |
bresp(clrin[n], inpRGB[i]); |
464 |
> |
copycolor(clrout[n], mbRGB[i]); |
465 |
> |
n++; |
466 |
> |
} |
467 |
> |
compsoln(clrin, clrout, n); |
468 |
> |
if (irrad > 0.99 && irrad < 1.01) /* check gamut */ |
469 |
> |
for (i = 0; i < 24; i++) |
470 |
> |
if (cflags & 1L<<i && cvtcolor(ctmp, mbRGB[i])) |
471 |
> |
gmtflags |= 1L<<i; |
472 |
> |
} while (cflags & gmtflags); |
473 |
> |
if (gmtflags & MODFLGS) |
474 |
> |
fprintf(stderr, |
475 |
> |
"%s: warning - some moderate colors are out of gamut\n", |
476 |
> |
progname); |
477 |
|
} |
478 |
|
|
479 |
|
|
480 |
< |
putmapping() /* put out color mapping for pcomb -f */ |
480 |
> |
putmapping() /* put out color mapping */ |
481 |
|
{ |
482 |
|
static char cchar[3] = {'r', 'g', 'b'}; |
483 |
|
register int i, j; |
491 |
|
for (i = 0; i < NMBNEU; i++) |
492 |
|
printf(",%g", colval(bramp[i][1],j)); |
493 |
|
printf(");\n"); |
331 |
– |
printf("%c = %ci(1);\n", cchar[j], cchar[j]); |
494 |
|
printf("%cfi(n) = if(n-%g, %d, if(%cxa(n+1)-%c, n, %cfi(n+1)));\n", |
495 |
|
cchar[j], NMBNEU-1.5, NMBNEU-1, cchar[j], |
496 |
|
cchar[j], cchar[j]); |
497 |
|
printf("%cndx = %cfi(1);\n", cchar[j], cchar[j]); |
498 |
< |
printf("%cn = ((%cxa(%cndx+1)-%c)*%cya(%cndx) + ", |
499 |
< |
cchar[j], cchar[j], cchar[j], |
500 |
< |
cchar[j], cchar[j], cchar[j]); |
498 |
> |
printf("%c%c = ((%cxa(%cndx+1)-%c)*%cya(%cndx) + ", |
499 |
> |
cchar[j], scanning?'n':'o', cchar[j], |
500 |
> |
cchar[j], cchar[j], cchar[j], cchar[j]); |
501 |
|
printf("(%c-%cxa(%cndx))*%cya(%cndx+1)) /\n", |
502 |
|
cchar[j], cchar[j], cchar[j], |
503 |
|
cchar[j], cchar[j]); |
505 |
|
cchar[j], cchar[j], cchar[j], cchar[j]); |
506 |
|
} |
507 |
|
/* print color mapping */ |
508 |
< |
printf("ro = %g*rn + %g*gn + %g*bn ;\n", |
509 |
< |
solmat[0][0], solmat[0][1], solmat[0][2]); |
510 |
< |
printf("go = %g*rn + %g*gn + %g*bn ;\n", |
511 |
< |
solmat[1][0], solmat[1][1], solmat[1][2]); |
512 |
< |
printf("bo = %g*rn + %g*gn + %g*bn ;\n", |
513 |
< |
solmat[2][0], solmat[2][1], solmat[2][2]); |
508 |
> |
if (scanning) { |
509 |
> |
printf("r = ri(1); g = gi(1); b = bi(1);\n"); |
510 |
> |
printf("ro = %g*rn + %g*gn + %g*bn ;\n", |
511 |
> |
solmat[0][0], solmat[0][1], solmat[0][2]); |
512 |
> |
printf("go = %g*rn + %g*gn + %g*bn ;\n", |
513 |
> |
solmat[1][0], solmat[1][1], solmat[1][2]); |
514 |
> |
printf("bo = %g*rn + %g*gn + %g*bn ;\n", |
515 |
> |
solmat[2][0], solmat[2][1], solmat[2][2]); |
516 |
> |
} else { |
517 |
> |
printf("r1 = ri(1); g1 = gi(1); b1 = bi(1);\n"); |
518 |
> |
printf("r = %g*r1 + %g*g1 + %g*b1 ;\n", |
519 |
> |
solmat[0][0], solmat[0][1], solmat[0][2]); |
520 |
> |
printf("g = %g*r1 + %g*g1 + %g*b1 ;\n", |
521 |
> |
solmat[1][0], solmat[1][1], solmat[1][2]); |
522 |
> |
printf("b = %g*r1 + %g*g1 + %g*b1 ;\n", |
523 |
> |
solmat[2][0], solmat[2][1], solmat[2][2]); |
524 |
> |
} |
525 |
|
} |
526 |
|
|
527 |
|
|
535 |
|
double colv[3], rowv[3]; |
536 |
|
register int i, j, k; |
537 |
|
|
538 |
< |
if (n < 3 | n > NMBMOD) { |
539 |
< |
fprintf(stderr, "%s: inconsistent code!\n", progname); |
538 |
> |
if (n < 3) { |
539 |
> |
fprintf(stderr, "%s: too few colors to match!\n", progname); |
540 |
|
exit(1); |
541 |
|
} |
542 |
|
if (n == 3) |
585 |
|
} |
586 |
|
|
587 |
|
|
588 |
+ |
cwarp() /* compute color warp map */ |
589 |
+ |
{ |
590 |
+ |
register int i; |
591 |
+ |
|
592 |
+ |
if ((wcor = new3dw(W3EXACT)) == NULL) |
593 |
+ |
goto memerr; |
594 |
+ |
for (i = 0; i < 24; i++) |
595 |
+ |
if (!add3dpt(wcor, inpRGB[i], mbRGB[i])) |
596 |
+ |
goto memerr; |
597 |
+ |
return; |
598 |
+ |
memerr: |
599 |
+ |
perror(progname); |
600 |
+ |
exit(1); |
601 |
+ |
} |
602 |
+ |
|
603 |
+ |
|
604 |
+ |
int |
605 |
|
cvtcolor(cout, cin) /* convert color according to our mapping */ |
606 |
|
COLOR cout, cin; |
607 |
|
{ |
608 |
< |
double r, g, b; |
608 |
> |
COLOR ctmp; |
609 |
> |
int clipped; |
610 |
|
|
611 |
< |
bresp(cout, cin); |
612 |
< |
r = colval(cout,0)*solmat[0][0] + colval(cout,1)*solmat[0][1] |
613 |
< |
+ colval(cout,2)*solmat[0][2]; |
614 |
< |
if (r < 0) r = 0; |
615 |
< |
g = colval(cout,0)*solmat[1][0] + colval(cout,1)*solmat[1][1] |
616 |
< |
+ colval(cout,2)*solmat[1][2]; |
617 |
< |
if (g < 0) g = 0; |
618 |
< |
b = colval(cout,0)*solmat[2][0] + colval(cout,1)*solmat[2][1] |
619 |
< |
+ colval(cout,2)*solmat[2][2]; |
620 |
< |
if (b < 0) b = 0; |
621 |
< |
setcolor(cout, r, g, b); |
611 |
> |
if (wcor != NULL) { |
612 |
> |
clipped = warp3d(cout, cin, wcor); |
613 |
> |
clipped |= clipgamut(cout,bright(cout),CGAMUT,colmin,colmax); |
614 |
> |
} else if (scanning) { |
615 |
> |
bresp(ctmp, cin); |
616 |
> |
clipped = cresp(cout, ctmp); |
617 |
> |
} else { |
618 |
> |
clipped = cresp(ctmp, cin); |
619 |
> |
bresp(cout, ctmp); |
620 |
> |
} |
621 |
> |
return(clipped); |
622 |
|
} |
623 |
|
|
624 |
|
|
625 |
< |
putdebug() /* put out debugging picture */ |
625 |
> |
int |
626 |
> |
cresp(cout, cin) /* transform color according to matrix */ |
627 |
> |
COLOR cout, cin; |
628 |
|
{ |
629 |
+ |
colortrans(cout, solmat, cin); |
630 |
+ |
return(clipgamut(cout, bright(cout), CGAMUT, colmin, colmax)); |
631 |
+ |
} |
632 |
+ |
|
633 |
+ |
|
634 |
+ |
xyY2RGB(rgbout, xyYin) /* convert xyY to RGB */ |
635 |
+ |
COLOR rgbout; |
636 |
+ |
register float xyYin[3]; |
637 |
+ |
{ |
638 |
+ |
COLOR ctmp; |
639 |
+ |
double d; |
640 |
+ |
|
641 |
+ |
d = xyYin[2] / xyYin[1]; |
642 |
+ |
ctmp[0] = xyYin[0] * d; |
643 |
+ |
ctmp[1] = xyYin[2]; |
644 |
+ |
ctmp[2] = (1. - xyYin[0] - xyYin[1]) * d; |
645 |
+ |
/* allow negative values */ |
646 |
+ |
colortrans(rgbout, xyz2rgbmat, ctmp); |
647 |
+ |
} |
648 |
+ |
|
649 |
+ |
|
650 |
+ |
picdebug() /* put out debugging picture */ |
651 |
+ |
{ |
652 |
+ |
static COLOR blkcol = BLKCOLOR; |
653 |
|
COLOR *scan; |
654 |
< |
int y; |
655 |
< |
register int x, i; |
654 |
> |
int y, i; |
655 |
> |
register int x, rg; |
656 |
|
|
440 |
– |
if (debugfp == NULL) |
441 |
– |
return; |
657 |
|
if (fseek(stdin, 0L, 0) == EOF) { |
658 |
|
fprintf(stderr, "%s: cannot seek on input picture\n", progname); |
659 |
|
exit(1); |
667 |
|
exit(1); |
668 |
|
} |
669 |
|
/* finish debug header */ |
670 |
+ |
fputformat(COLRFMT, debugfp); |
671 |
|
putc('\n', debugfp); |
672 |
|
fprtresolu(xmax, ymax, debugfp); |
673 |
+ |
/* write debug picture */ |
674 |
|
for (y = ymax-1; y >= 0; y--) { |
675 |
|
if (freadscan(scan, xmax, stdin) < 0) { |
676 |
|
fprintf(stderr, "%s: error rereading input picture\n", |
678 |
|
exit(1); |
679 |
|
} |
680 |
|
for (x = 0; x < xmax; x++) { |
681 |
< |
i = chartndx(x, y); |
682 |
< |
if (i < 0) |
681 |
> |
rg = chartndx(x, y, &i); |
682 |
> |
if (rg == RG_CENT) { |
683 |
> |
if (!(1L<<i & gmtflags) || (x+y)&07) { |
684 |
> |
copycolor(scan[x], mbRGB[i]); |
685 |
> |
clipgamut(scan[x], bright(scan[x]), |
686 |
> |
CGAMUT, colmin, colmax); |
687 |
> |
} else |
688 |
> |
copycolor(scan[x], blkcol); |
689 |
> |
} else if (rg == RG_CORR) |
690 |
|
cvtcolor(scan[x], scan[x]); |
691 |
< |
else |
692 |
< |
copycolor(scan[x], mbRGB[i]); |
691 |
> |
else if (rg != RG_ORIG) |
692 |
> |
copycolor(scan[x], blkcol); |
693 |
|
} |
694 |
|
if (fwritescan(scan, xmax, debugfp) < 0) { |
695 |
|
fprintf(stderr, "%s: error writing debugging picture\n", |
697 |
|
exit(1); |
698 |
|
} |
699 |
|
} |
700 |
+ |
/* clean up */ |
701 |
+ |
fclose(debugfp); |
702 |
+ |
free((char *)scan); |
703 |
+ |
} |
704 |
+ |
|
705 |
+ |
|
706 |
+ |
clrdebug() /* put out debug picture from color input */ |
707 |
+ |
{ |
708 |
+ |
static COLR blkclr = BLKCOLR; |
709 |
+ |
COLR mbclr[24], cvclr[24], orclr[24]; |
710 |
+ |
COLR *scan; |
711 |
+ |
COLOR ctmp, ct2; |
712 |
+ |
int y, i; |
713 |
+ |
register int x, rg; |
714 |
+ |
/* convert colors */ |
715 |
+ |
for (i = 0; i < 24; i++) { |
716 |
+ |
copycolor(ctmp, mbRGB[i]); |
717 |
+ |
clipgamut(ctmp, bright(ctmp), CGAMUT, cblack, cwhite); |
718 |
+ |
setcolr(mbclr[i], colval(ctmp,RED), |
719 |
+ |
colval(ctmp,GRN), colval(ctmp,BLU)); |
720 |
+ |
if (inpflags & 1L<<i) { |
721 |
+ |
copycolor(ctmp, inpRGB[i]); |
722 |
+ |
clipgamut(ctmp, bright(ctmp), CGAMUT, cblack, cwhite); |
723 |
+ |
setcolr(orclr[i], colval(ctmp,RED), |
724 |
+ |
colval(ctmp,GRN), colval(ctmp,BLU)); |
725 |
+ |
if (rawmap) |
726 |
+ |
copycolr(cvclr[i], mbclr[i]); |
727 |
+ |
else { |
728 |
+ |
bresp(ctmp, inpRGB[i]); |
729 |
+ |
colortrans(ct2, solmat, ctmp); |
730 |
+ |
clipgamut(ct2, bright(ct2), CGAMUT, |
731 |
+ |
cblack, cwhite); |
732 |
+ |
setcolr(cvclr[i], colval(ct2,RED), |
733 |
+ |
colval(ct2,GRN), |
734 |
+ |
colval(ct2,BLU)); |
735 |
+ |
} |
736 |
+ |
} |
737 |
+ |
} |
738 |
+ |
/* allocate scanline */ |
739 |
+ |
scan = (COLR *)malloc(xmax*sizeof(COLR)); |
740 |
+ |
if (scan == NULL) { |
741 |
+ |
perror(progname); |
742 |
+ |
exit(1); |
743 |
+ |
} |
744 |
+ |
/* finish debug header */ |
745 |
+ |
fputformat(COLRFMT, debugfp); |
746 |
+ |
putc('\n', debugfp); |
747 |
+ |
fprtresolu(xmax, ymax, debugfp); |
748 |
+ |
/* write debug picture */ |
749 |
+ |
for (y = ymax-1; y >= 0; y--) { |
750 |
+ |
for (x = 0; x < xmax; x++) { |
751 |
+ |
rg = chartndx(x, y, &i); |
752 |
+ |
if (rg == RG_CENT) { |
753 |
+ |
if (!(1L<<i & gmtflags) || (x+y)&07) |
754 |
+ |
copycolr(scan[x], mbclr[i]); |
755 |
+ |
else |
756 |
+ |
copycolr(scan[x], blkclr); |
757 |
+ |
} else if (rg == RG_BORD || !(1L<<i & inpflags)) |
758 |
+ |
copycolr(scan[x], blkclr); |
759 |
+ |
else if (rg == RG_ORIG) |
760 |
+ |
copycolr(scan[x], orclr[i]); |
761 |
+ |
else /* rg == RG_CORR */ |
762 |
+ |
copycolr(scan[x], cvclr[i]); |
763 |
+ |
} |
764 |
+ |
if (fwritecolrs(scan, xmax, debugfp) < 0) { |
765 |
+ |
fprintf(stderr, "%s: error writing debugging picture\n", |
766 |
+ |
progname); |
767 |
+ |
exit(1); |
768 |
+ |
} |
769 |
+ |
} |
770 |
+ |
/* clean up */ |
771 |
+ |
fclose(debugfp); |
772 |
|
free((char *)scan); |
773 |
|
} |