| 1 |
#ifndef lint
|
| 2 |
static const char RCSid[] = "$Id: falsecolor.c,v 3.8 2008/07/03 03:30:21 greg Exp $";
|
| 3 |
#endif
|
| 4 |
/*
|
| 5 |
* False color mapping functions.
|
| 6 |
* See falsecolor.h for detailed function descriptions.
|
| 7 |
*
|
| 8 |
* Externals declared in falsecolor.h
|
| 9 |
*/
|
| 10 |
|
| 11 |
#include "copyright.h"
|
| 12 |
|
| 13 |
#include <stdio.h>
|
| 14 |
#include <math.h>
|
| 15 |
#include <string.h>
|
| 16 |
#include "tmprivat.h"
|
| 17 |
#include "falsecolor.h"
|
| 18 |
|
| 19 |
/* Initialize new false color mapping */
|
| 20 |
FCstruct *
|
| 21 |
fcInit(BYTE fcscale[256][3])
|
| 22 |
{
|
| 23 |
FCstruct *fcs = (FCstruct *)malloc(sizeof(FCstruct));
|
| 24 |
|
| 25 |
if (fcs == NULL)
|
| 26 |
return(NULL);
|
| 27 |
fcs->mbrmin = 10; fcs->mbrmax = -10;
|
| 28 |
fcs->lumap = NULL;
|
| 29 |
if ((fcs->scale = fcscale) == NULL)
|
| 30 |
fcs->scale = fcDefaultScale;
|
| 31 |
return(fcs);
|
| 32 |
}
|
| 33 |
|
| 34 |
/* Assign fixed linear false color map */
|
| 35 |
int
|
| 36 |
fcFixedLinear(FCstruct *fcs, double Lwmax)
|
| 37 |
{
|
| 38 |
double mult;
|
| 39 |
int i;
|
| 40 |
|
| 41 |
if ((fcs == NULL) | (Lwmax <= MINLUM))
|
| 42 |
return(TM_E_ILLEGAL);
|
| 43 |
if (fcs->lumap != NULL)
|
| 44 |
free((void *)fcs->lumap);
|
| 45 |
fcs->mbrmin = tmCvLuminance(Lwmax/256.);
|
| 46 |
fcs->mbrmax = tmCvLuminance(Lwmax);
|
| 47 |
fcs->lumap = (BYTE *)malloc(sizeof(BYTE)*(fcs->mbrmax - fcs->mbrmin + 1));
|
| 48 |
if (fcs->lumap == NULL)
|
| 49 |
return(TM_E_NOMEM);
|
| 50 |
mult = 255.999/tmLuminance(fcs->mbrmax);
|
| 51 |
for (i = fcs->mbrmin; i <= fcs->mbrmax; i++)
|
| 52 |
fcs->lumap[i - fcs->mbrmin] = (int)(mult * tmLuminance(i));
|
| 53 |
returnOK;
|
| 54 |
}
|
| 55 |
|
| 56 |
/* Assign fixed logarithmic false color map */
|
| 57 |
int
|
| 58 |
fcFixedLog(FCstruct *fcs, double Lwmin, double Lwmax)
|
| 59 |
{
|
| 60 |
int i;
|
| 61 |
|
| 62 |
if ((fcs == NULL) | (Lwmin <= MINLUM) | (Lwmax <= Lwmin))
|
| 63 |
return(TM_E_ILLEGAL);
|
| 64 |
if (fcs->lumap != NULL)
|
| 65 |
free((void *)fcs->lumap);
|
| 66 |
fcs->mbrmin = tmCvLuminance(Lwmin);
|
| 67 |
fcs->mbrmax = tmCvLuminance(Lwmax);
|
| 68 |
if (fcs->mbrmin >= fcs->mbrmax) {
|
| 69 |
fcs->lumap = NULL;
|
| 70 |
return(TM_E_ILLEGAL);
|
| 71 |
}
|
| 72 |
fcs->lumap = (BYTE *)malloc(sizeof(BYTE)*(fcs->mbrmax - fcs->mbrmin + 1));
|
| 73 |
if (fcs->lumap == NULL)
|
| 74 |
return(TM_E_NOMEM);
|
| 75 |
for (i = fcs->mbrmax - fcs->mbrmin; i >= 0; i--)
|
| 76 |
fcs->lumap[i] = 256L * i / (fcs->mbrmax - fcs->mbrmin + 1);
|
| 77 |
returnOK;
|
| 78 |
}
|
| 79 |
|
| 80 |
/* Compute linear false color map */
|
| 81 |
int
|
| 82 |
fcLinearMapping(FCstruct *fcs, TMstruct *tms, double pctile)
|
| 83 |
{
|
| 84 |
int i, histlen;
|
| 85 |
int32 histot, cnt;
|
| 86 |
int brt0;
|
| 87 |
|
| 88 |
if ((fcs == NULL) | (tms == NULL) || (tms->histo == NULL) |
|
| 89 |
(0 > pctile) | (pctile >= 50))
|
| 90 |
return(TM_E_ILLEGAL);
|
| 91 |
i = HISTI(tms->hbrmin);
|
| 92 |
brt0 = HISTV(i);
|
| 93 |
histlen = HISTI(tms->hbrmax) + 1 - i;
|
| 94 |
histot = 0;
|
| 95 |
for (i = histlen; i--; )
|
| 96 |
histot += tms->histo[i];
|
| 97 |
cnt = histot * pctile / 100;
|
| 98 |
for (i = histlen; i--; )
|
| 99 |
if ((cnt -= tms->histo[i]) < 0)
|
| 100 |
break;
|
| 101 |
if (i <= 0)
|
| 102 |
return(TM_E_TMFAIL);
|
| 103 |
return(fcFixedLinear(fcs, tmLuminance(brt0 + i*HISTEP)));
|
| 104 |
}
|
| 105 |
|
| 106 |
/* Compute logarithmic false color map */
|
| 107 |
int
|
| 108 |
fcLogMapping(FCstruct *fcs, TMstruct *tms, double pctile)
|
| 109 |
{
|
| 110 |
int i, histlen;
|
| 111 |
int32 histot, cnt;
|
| 112 |
int brt0, wbrmin, wbrmax;
|
| 113 |
|
| 114 |
if ((fcs == NULL) | (tms == NULL) || (tms->histo == NULL) |
|
| 115 |
(.0 > pctile) | (pctile >= 50.))
|
| 116 |
return(TM_E_ILLEGAL);
|
| 117 |
i = HISTI(tms->hbrmin);
|
| 118 |
brt0 = HISTV(i);
|
| 119 |
histlen = HISTI(tms->hbrmax) + 1 - i;
|
| 120 |
histot = 0;
|
| 121 |
for (i = histlen; i--; )
|
| 122 |
histot += tms->histo[i];
|
| 123 |
cnt = histot * pctile * .01;
|
| 124 |
for (i = 0; i < histlen; i++)
|
| 125 |
if ((cnt -= tms->histo[i]) < 0)
|
| 126 |
break;
|
| 127 |
if (i >= histlen)
|
| 128 |
return(TM_E_TMFAIL);
|
| 129 |
wbrmin = brt0 + i*HISTEP;
|
| 130 |
cnt = histot * pctile * .01;
|
| 131 |
for (i = histlen; i--; )
|
| 132 |
if ((cnt -= tms->histo[i]) < 0)
|
| 133 |
break;
|
| 134 |
wbrmax = brt0 + i*HISTEP;
|
| 135 |
if (wbrmax <= wbrmin)
|
| 136 |
return(TM_E_TMFAIL);
|
| 137 |
return(fcFixedLog(fcs, tmLuminance(wbrmin), tmLuminance(wbrmax)));
|
| 138 |
}
|
| 139 |
|
| 140 |
/* Apply false color mapping to pixel values */
|
| 141 |
int
|
| 142 |
fcMapPixels(FCstruct *fcs, BYTE *ps, TMbright *ls, int len)
|
| 143 |
{
|
| 144 |
int li;
|
| 145 |
|
| 146 |
if (fcs == NULL || (fcs->lumap == NULL) | (fcs->scale == NULL))
|
| 147 |
return(TM_E_ILLEGAL);
|
| 148 |
if ((ps == NULL) | (ls == NULL) | (len < 0))
|
| 149 |
return(TM_E_ILLEGAL);
|
| 150 |
while (len--) {
|
| 151 |
if ((li = *ls++) < fcs->mbrmin)
|
| 152 |
li = 0;
|
| 153 |
else if (li > fcs->mbrmax)
|
| 154 |
li = 255;
|
| 155 |
else
|
| 156 |
li = fcs->lumap[li - fcs->mbrmin];
|
| 157 |
*ps++ = fcs->scale[li][RED];
|
| 158 |
*ps++ = fcs->scale[li][GRN];
|
| 159 |
*ps++ = fcs->scale[li][BLU];
|
| 160 |
}
|
| 161 |
returnOK;
|
| 162 |
}
|
| 163 |
|
| 164 |
/* Determine if false color mapping is logarithmic */
|
| 165 |
int
|
| 166 |
fcIsLogMap(FCstruct *fcs)
|
| 167 |
{
|
| 168 |
int miderr;
|
| 169 |
|
| 170 |
if (fcs == NULL || fcs->lumap == NULL)
|
| 171 |
return(-1);
|
| 172 |
|
| 173 |
miderr = (fcs->mbrmax - fcs->mbrmin)/2;
|
| 174 |
miderr = fcs->lumap[miderr] -
|
| 175 |
256L * miderr / (fcs->mbrmax - fcs->mbrmin + 1);
|
| 176 |
|
| 177 |
return((-1 <= miderr) & (miderr <= 1));
|
| 178 |
}
|
| 179 |
|
| 180 |
/* Duplicate a false color structure */
|
| 181 |
FCstruct *
|
| 182 |
fcDup(FCstruct *fcs)
|
| 183 |
{
|
| 184 |
FCstruct *fcnew;
|
| 185 |
|
| 186 |
if (fcs == NULL)
|
| 187 |
return(NULL);
|
| 188 |
fcnew = fcInit(fcs->scale);
|
| 189 |
if (fcnew == NULL)
|
| 190 |
return(NULL);
|
| 191 |
if (fcs->lumap != NULL) {
|
| 192 |
fcnew->lumap = (BYTE *)malloc(sizeof(BYTE)*(fcs->mbrmax -
|
| 193 |
fcs->mbrmin + 1));
|
| 194 |
if (fcnew->lumap == NULL)
|
| 195 |
return(fcnew);
|
| 196 |
fcnew->mbrmin = fcs->mbrmin; fcnew->mbrmax = fcs->mbrmax;
|
| 197 |
memcpy((void *)fcnew->lumap, (void *)fcs->lumap,
|
| 198 |
sizeof(BYTE)*(fcs->mbrmax - fcs->mbrmin + 1));
|
| 199 |
}
|
| 200 |
return(fcnew);
|
| 201 |
}
|
| 202 |
|
| 203 |
/* Free data associated with the given false color mapping structure */
|
| 204 |
void
|
| 205 |
fcDone(FCstruct *fcs)
|
| 206 |
{
|
| 207 |
if (fcs == NULL)
|
| 208 |
return;
|
| 209 |
if (fcs->lumap != NULL)
|
| 210 |
free((void *)fcs->lumap);
|
| 211 |
free((void *)fcs);
|
| 212 |
}
|
| 213 |
|
| 214 |
BYTE fcDefaultScale[256][3] = { /* default false color scale */
|
| 215 |
111,8,132,
|
| 216 |
108,7,133,
|
| 217 |
105,7,134,
|
| 218 |
102,6,136,
|
| 219 |
98,6,137,
|
| 220 |
93,5,139,
|
| 221 |
89,4,141,
|
| 222 |
84,3,143,
|
| 223 |
79,2,145,
|
| 224 |
74,1,148,
|
| 225 |
68,0,150,
|
| 226 |
63,0,153,
|
| 227 |
57,0,155,
|
| 228 |
52,0,157,
|
| 229 |
46,0,160,
|
| 230 |
41,0,162,
|
| 231 |
36,0,164,
|
| 232 |
31,0,166,
|
| 233 |
26,0,168,
|
| 234 |
22,0,170,
|
| 235 |
18,0,172,
|
| 236 |
14,2,174,
|
| 237 |
11,4,175,
|
| 238 |
8,7,176,
|
| 239 |
7,9,177,
|
| 240 |
6,11,177,
|
| 241 |
5,13,178,
|
| 242 |
4,16,178,
|
| 243 |
3,18,179,
|
| 244 |
2,21,180,
|
| 245 |
1,24,180,
|
| 246 |
1,28,181,
|
| 247 |
0,31,181,
|
| 248 |
0,35,182,
|
| 249 |
0,38,182,
|
| 250 |
0,42,183,
|
| 251 |
0,46,184,
|
| 252 |
0,50,184,
|
| 253 |
0,54,184,
|
| 254 |
0,58,185,
|
| 255 |
0,63,185,
|
| 256 |
0,67,186,
|
| 257 |
0,71,186,
|
| 258 |
0,76,186,
|
| 259 |
0,80,187,
|
| 260 |
0,84,187,
|
| 261 |
0,89,187,
|
| 262 |
0,93,187,
|
| 263 |
1,97,187,
|
| 264 |
1,102,187,
|
| 265 |
1,106,187,
|
| 266 |
2,110,187,
|
| 267 |
2,114,187,
|
| 268 |
3,118,186,
|
| 269 |
3,122,186,
|
| 270 |
4,126,186,
|
| 271 |
4,130,185,
|
| 272 |
4,133,185,
|
| 273 |
5,137,184,
|
| 274 |
5,140,183,
|
| 275 |
6,143,182,
|
| 276 |
6,146,181,
|
| 277 |
6,149,180,
|
| 278 |
7,151,179,
|
| 279 |
7,154,178,
|
| 280 |
7,156,177,
|
| 281 |
8,158,175,
|
| 282 |
8,161,172,
|
| 283 |
9,163,169,
|
| 284 |
9,165,165,
|
| 285 |
9,167,161,
|
| 286 |
9,169,157,
|
| 287 |
10,170,153,
|
| 288 |
10,172,148,
|
| 289 |
10,173,143,
|
| 290 |
11,174,138,
|
| 291 |
11,174,133,
|
| 292 |
11,175,127,
|
| 293 |
12,175,122,
|
| 294 |
12,176,117,
|
| 295 |
13,176,111,
|
| 296 |
14,176,106,
|
| 297 |
14,176,101,
|
| 298 |
15,175,95,
|
| 299 |
16,175,90,
|
| 300 |
17,175,86,
|
| 301 |
18,174,81,
|
| 302 |
20,174,77,
|
| 303 |
21,173,73,
|
| 304 |
22,172,69,
|
| 305 |
24,172,66,
|
| 306 |
26,171,63,
|
| 307 |
28,170,60,
|
| 308 |
30,169,58,
|
| 309 |
32,168,57,
|
| 310 |
34,167,56,
|
| 311 |
37,166,55,
|
| 312 |
40,165,54,
|
| 313 |
42,164,54,
|
| 314 |
45,163,54,
|
| 315 |
48,162,55,
|
| 316 |
52,160,55,
|
| 317 |
55,158,56,
|
| 318 |
58,157,57,
|
| 319 |
62,155,57,
|
| 320 |
66,153,59,
|
| 321 |
69,152,60,
|
| 322 |
73,150,61,
|
| 323 |
77,148,63,
|
| 324 |
81,146,64,
|
| 325 |
84,144,66,
|
| 326 |
88,142,67,
|
| 327 |
92,139,69,
|
| 328 |
96,137,70,
|
| 329 |
99,135,72,
|
| 330 |
103,133,73,
|
| 331 |
107,131,75,
|
| 332 |
110,128,76,
|
| 333 |
113,126,77,
|
| 334 |
117,124,78,
|
| 335 |
120,121,79,
|
| 336 |
123,119,80,
|
| 337 |
126,117,80,
|
| 338 |
128,114,81,
|
| 339 |
131,112,81,
|
| 340 |
133,110,81,
|
| 341 |
135,108,80,
|
| 342 |
136,106,80,
|
| 343 |
137,105,80,
|
| 344 |
138,104,79,
|
| 345 |
139,102,79,
|
| 346 |
140,101,79,
|
| 347 |
141,100,78,
|
| 348 |
142,98,78,
|
| 349 |
143,96,77,
|
| 350 |
144,95,76,
|
| 351 |
144,93,76,
|
| 352 |
145,92,75,
|
| 353 |
146,90,74,
|
| 354 |
146,89,73,
|
| 355 |
147,87,73,
|
| 356 |
148,85,72,
|
| 357 |
148,84,71,
|
| 358 |
149,82,70,
|
| 359 |
149,80,69,
|
| 360 |
150,79,68,
|
| 361 |
150,77,67,
|
| 362 |
151,75,66,
|
| 363 |
151,73,65,
|
| 364 |
151,72,64,
|
| 365 |
152,70,63,
|
| 366 |
152,68,62,
|
| 367 |
153,66,61,
|
| 368 |
153,65,60,
|
| 369 |
153,63,59,
|
| 370 |
154,61,58,
|
| 371 |
154,60,57,
|
| 372 |
154,58,56,
|
| 373 |
154,56,55,
|
| 374 |
155,55,54,
|
| 375 |
155,53,53,
|
| 376 |
155,51,51,
|
| 377 |
156,50,50,
|
| 378 |
156,48,49,
|
| 379 |
156,46,48,
|
| 380 |
157,45,47,
|
| 381 |
157,43,46,
|
| 382 |
157,42,45,
|
| 383 |
158,40,44,
|
| 384 |
158,39,43,
|
| 385 |
158,37,42,
|
| 386 |
159,36,41,
|
| 387 |
159,34,40,
|
| 388 |
159,33,39,
|
| 389 |
160,32,38,
|
| 390 |
160,31,37,
|
| 391 |
161,29,37,
|
| 392 |
161,28,36,
|
| 393 |
162,27,35,
|
| 394 |
162,26,34,
|
| 395 |
163,25,33,
|
| 396 |
163,24,33,
|
| 397 |
164,23,32,
|
| 398 |
165,22,31,
|
| 399 |
165,21,31,
|
| 400 |
168,18,29,
|
| 401 |
170,16,28,
|
| 402 |
172,13,26,
|
| 403 |
175,11,25,
|
| 404 |
177,9,24,
|
| 405 |
180,7,23,
|
| 406 |
183,5,22,
|
| 407 |
185,3,21,
|
| 408 |
188,2,21,
|
| 409 |
191,1,20,
|
| 410 |
194,0,19,
|
| 411 |
197,0,19,
|
| 412 |
199,0,18,
|
| 413 |
202,0,17,
|
| 414 |
205,0,17,
|
| 415 |
207,0,16,
|
| 416 |
210,2,16,
|
| 417 |
213,3,15,
|
| 418 |
215,6,14,
|
| 419 |
217,8,13,
|
| 420 |
219,11,13,
|
| 421 |
220,13,12,
|
| 422 |
222,17,11,
|
| 423 |
224,20,11,
|
| 424 |
226,24,10,
|
| 425 |
227,28,9,
|
| 426 |
229,32,8,
|
| 427 |
231,37,7,
|
| 428 |
232,42,6,
|
| 429 |
234,47,5,
|
| 430 |
236,52,5,
|
| 431 |
237,57,4,
|
| 432 |
239,63,3,
|
| 433 |
240,68,2,
|
| 434 |
242,74,2,
|
| 435 |
243,79,1,
|
| 436 |
245,85,0,
|
| 437 |
246,91,0,
|
| 438 |
247,96,0,
|
| 439 |
248,102,0,
|
| 440 |
250,108,0,
|
| 441 |
251,113,0,
|
| 442 |
252,118,0,
|
| 443 |
253,123,0,
|
| 444 |
254,128,0,
|
| 445 |
254,133,0,
|
| 446 |
255,138,0,
|
| 447 |
255,143,1,
|
| 448 |
255,148,2,
|
| 449 |
255,154,3,
|
| 450 |
255,159,4,
|
| 451 |
255,165,6,
|
| 452 |
255,170,7,
|
| 453 |
255,176,9,
|
| 454 |
255,181,11,
|
| 455 |
255,187,13,
|
| 456 |
255,192,15,
|
| 457 |
255,198,17,
|
| 458 |
255,203,20,
|
| 459 |
255,208,22,
|
| 460 |
255,213,24,
|
| 461 |
255,218,26,
|
| 462 |
255,223,28,
|
| 463 |
255,227,30,
|
| 464 |
255,232,32,
|
| 465 |
255,236,34,
|
| 466 |
254,240,35,
|
| 467 |
254,243,37,
|
| 468 |
254,246,38,
|
| 469 |
254,249,39,
|
| 470 |
254,252,40,
|
| 471 |
};
|
