src/colorize.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include <stdlib.h>
   4 #include <unistd.h>
   5 #include <getopt.h>
   6 #include <math.h>
   7 #include <time.h>
   8 #include "../lib/darray.h"
   9 #include "../lib/colorize.h"
  10 #include "img.h"
  11 #include "yuv.h"
  12 #include "mark.h"
  13 #include "process.h"
  14 #include "settings.h"
  15 #include "dir_seperator.h"
  16 #ifdef WITH_OPENCV
  17 #include "opticalflow.h"
  18 #endif
  19
  20 static void print_help(const char *app);
  21 static void print_test_help();
  22
  23 //#defbug SEQUENCE
  24 //#define SINGLE_K_TEST 2
  25
  26 /*
  27  * load sequence
  28  */
  29
  30 struct sequence {
  31         char filename[256];
  32 };
  33 static struct sequence *sequence = NULL;
  34
  35 /* load sequence list and return number of images in sequence */
  36 static int load_sequence(int *start, int *next, char *first_filename)
  37 {
  38         const char *name = "sequence";
  39         int count;
  40         int i, j, keyframe_before_start, eof;
  41         FILE *fp;
  42         char buffer[256], *p;
  43
  44         /* free previously used sequence */
  45         if (sequence)
  46                 free(sequence);
  47         sequence = NULL;
  48
  49 again:
  50         /* get number of frames until next keyframe or end of squence */
  51         fp = fopen(name, "r");
  52         if (!fp) {
  53                 printf("failed to load sequence '%s'\n", name);
  54                 return -1;
  55         }
  56         count = 0;
  57         j = 0;
  58         eof = 1;
  59         keyframe_before_start = 0;
  60         while(fgets(buffer, sizeof(buffer), fp)) {
  61                 p = strchr(buffer + 1, '\"');
  62                 if (!p)
  63                         break;
  64                 *p = '\0';
  65                 if (j == 0)
  66                         strcpy(first_filename, buffer + 1);
  67                 p++;
  68                 if ((*start) && j == (*start) - 1) {
  69                         if (strstr(p, "keyframe"))
  70                                 keyframe_before_start = 1;
  71                 }
  72                 if (j < (*start)) {
  73                         j++;
  74                         continue;
  75                 }
  76 #ifdef DEBUG_SEQUENCE
  77                 printf("counting %d\n", j);
  78 #endif
  79                 j++;
  80                 count++;
  81                 /* skip start frame, since it is always a keyframe */
  82                 if (count == 1)
  83                         continue;
  84                 if (strstr(p, "keyframe")) {
  85                         eof = 0;
  86                         break;
  87                 }
  88         }
  89         fclose(fp);
  90
  91         /* end of file case */
  92         if (count == 0) {
  93 #ifdef DEBUG_SEQUENCE
  94                 puts("end of file");
  95 #endif
  96                 *next = -1;
  97                 return 0;
  98         } else
  99         if (count == 1) {
 100 #ifdef DEBUG_SEQUENCE
 101                 puts("count=1");
 102 #endif
 103                 if (eof) {
 104 #ifdef DEBUG_SEQUENCE
 105                         puts("end of file at last frame");
 106 #endif
 107                         *next = -1;
 108                         return 0;
 109                 }
 110                 /* we are done, because we already had the last sequence */
 111                 if (!keyframe_before_start) {
 112 #ifdef DEBUG_SEQUENCE
 113                         puts("no keyframe before start");
 114 #endif
 115                         (*next) = -1;
 116                         return 0;
 117                 }
 118 #ifdef DEBUG_SEQUENCE
 119                 puts("keyframe before start");
 120 #endif
 121                 /* we just have a single last frame */
 122                 count = 1;
 123                 (*next) = (*start) + 1;
 124         } else
 125         /* if we have two keyframes side by side, we ignore it */
 126         if (count == 2 && !eof) {
 127 #ifdef DEBUG_SEQUENCE
 128                 puts("count=2");
 129 #endif
 130                 /* only if the frame before start is not a keyframe
 131                  * and we are not the first sequence, because that would mean
 132                  * that the first frame is a single sequence */
 133                 if (!keyframe_before_start && (*start) > 0) {
 134 #ifdef DEBUG_SEQUENCE
 135                         puts("no keyframe before start");
 136 #endif
 137                         (*start)++;
 138                         goto again;
 139                 }
 140 #ifdef DEBUG_SEQUENCE
 141                 puts("keyframe before start or first frame");
 142 #endif
 143                 /* now the start frame has one keyframe before and one after */
 144                 count = 1;
 145                 (*next) = (*start) + 1;
 146         } else {
 147                 (*next) = (*start) + count - 1;
 148         }
 149
 150         /* alloc memory for sequence and fill with data */
 151         sequence = (struct sequence *)malloc(sizeof(struct sequence) * count);
 152         if (!sequence) {
 153                 printf("no memory for sequence\n");
 154                 return -1;
 155         }
 156         memset((struct sequence *)sequence, 0, sizeof(struct sequence) * count);
 157         fp = fopen(name, "r");
 158         if (!fp) {
 159                 printf("failed to load sequence '%s'\n", name);
 160                 return -1;
 161         }
 162         i = 0;
 163         j = 0;
 164         while(fgets(buffer, sizeof(buffer), fp)) {
 165                 p = strchr(buffer + 1, '\"');
 166                 if (!p)
 167                         break;
 168                 if (j < (*start)) {
 169                         j++;
 170                         continue;
 171                 }
 172                 *p = '\0';
 173                 strcpy(sequence[i].filename, buffer + 1);
 174                 i++;
 175                 if (i == count)
 176                         break;
 177         }
 178         fclose(fp);
 179
 180         return count;
 181 }
 182
 183 /*
 184  * options
 185  */
 186
 187 static int in_itr_num = 5, out_itr_num = 1, quick = 0, optical_flow = 1, bright_contrast = 1, alpha_change = 1;
 188 int scale = 1, scalexyz = 999;
 189 static char output_prefix[256] = "";
 190
 191 static enum test test = NO_TEST;
 192
 193 static int parse_test(const char *arg)
 194 {
 195         if (!strcmp(arg, "help")) {
 196                 print_test_help();
 197                 exit(0);
 198         }
 199 #ifdef WITH_OPENCV
 200         if (!strcmp(arg, "flow-next"))
 201                 return FLOW_NEXT;
 202         if (!strcmp(arg, "flow-prev"))
 203                 return FLOW_PREV;
 204 #endif
 205         if (!strcmp(arg, "marked"))
 206                 return MARKED;
 207         if (!strcmp(arg, "mask"))
 208                 return MASK;
 209         if (!strcmp(arg, "mask+color"))
 210                 return MASK_COLOR;
 211         if (!strcmp(arg, "bc-only"))
 212                 return BC_ONLY;
 213         if (!strcmp(arg, "bc-image"))
 214                 return BC_IMAGE;
 215         if (!strcmp(arg, "alpha"))
 216                 return ALPHA;
 217         if (!strcmp(arg, "no-alpha"))
 218                 return NO_ALPHA;
 219         if (!strcmp(arg, "removal-image"))
 220                 return REMOVAL_IMAGE;
 221
 222         return NO_TEST;
 223 }
 224
 225 static int handle_options(int argc, char **argv)
 226 {
 227         int skip_args = 0;
 228
 229         while (1) {
 230                 int option_index = 0, c;
 231                 static struct option long_options[] = {
 232                         {"help", 0, 0, 'h'},
 233                         {"depth", 1, 0, 'd'},
 234                         {"output-prefix", 1, 0, 'O'},
 235                         {"in-itr-num", 1, 0, 'i'},
 236                         {"out-itr-num", 1, 0, 'o'},
 237                         {"quick", 0, 0, 'q'},
 238                         {"zscale", 1, 0, 'z'},
 239                         {"brightness-contrast", 1, 0, 'b'},
 240                         {"optical-flow", 1, 0, 'f'},
 241                         {"scale", 1, 0, 's'},
 242                         {"test", 1, 0, 't'},
 243                         {0, 0, 0, 0},
 244                 };
 245
 246                 c = getopt_long(argc, argv, "hd:O:i:o:qz:b:f:s:t:", long_options, &option_index);
 247
 248                 if (c == -1)
 249                         break;
 250
 251                 switch (c) {
 252                 case 'h':
 253                         print_help(argv[0]);
 254                         exit(0);
 255                 case 'd':
 256                         save_depth = atoi(optarg);
 257                         skip_args += 2;
 258                         break;
 259                 case 'O':
 260                         strcpy(output_prefix, optarg);
 261                         skip_args += 2;
 262                         break;
 263                 case 'i':
 264                         in_itr_num = atoi(optarg);
 265                         skip_args += 2;
 266                         break;
 267                 case 'o':
 268                         out_itr_num = atoi(optarg);
 269                         skip_args += 2;
 270                         break;
 271                 case 'q':
 272                         quick = 1;
 273                         skip_args += 1;
 274                         break;
 275                 case 'z':
 276                         scalexyz = atoi(optarg);
 277                         skip_args += 2;
 278                         break;
 279                 case 'b':
 280                         bright_contrast = atoi(optarg);
 281                         skip_args += 2;
 282                         break;
 283                 case 'a':
 284                         alpha_change = atoi(optarg);
 285                         skip_args += 2;
 286                         break;
 287                 case 'f':
 288                         optical_flow = atoi(optarg);
 289                         skip_args += 2;
 290                         break;
 291                 case 's':
 292                         scale = atoi(optarg);
 293                         skip_args += 2;
 294                         break;
 295                 case 't':
 296                         test = parse_test(optarg);
 297                         if (!test) {
 298                                 fprintf(stderr, "Invalid test '%s', use '--test help' to get a list of tests\n", optarg);
 299                                 exit(-1);
 300                         }
 301                         skip_args += 2;
 302                         break;
 303                 default:
 304                         break;
 305                 }
 306         }
 307
 308         return skip_args;
 309 }
 310
 311 /*
 312  * usage
 313  */
 314
 315 static void print_help(const char *app)
 316 {
 317         printf("Colorize version %s\n\n",
 318 #include "../version.h"
 319         );
 320         printf("Usage: %s [options] <grey ppm image> <marked ppm image> <result ppm image> [<frames> <start>]\n", app);
 321         printf("       Colorize grey image using marked image and save to result image.\n");
 322         printf("       If frames and start frame is given, image names must include printf integer formatting (e.g. %%04d).\n");
 323         printf("Usage: %s [options] <grey ppm image> marked <result ppm image>\n", app);
 324         printf("       Colorize grey image using marked mask + palette and save to result image.\n");
 325         printf("Usage: %s [options] sequence [list | <start with frame> [<stop with frame>]]\n", app);
 326         printf("       Colorize movie sequence (generated by colorize gui) as found in the current directory.\n");
 327         printf("       Use list to view sequence segments between keyframes.\n");
 328         printf("\nOptions:\n");
 329         printf(" -h --help                           This help\n");
 330         printf(" -d --depth <bits>                   Save images with given color bit depth (default=%d)\n", save_depth);
 331         printf(" -O --output-prefix <path>/<prefix>  Store result image of a sequence using this prefix\n");
 332         printf(" -i --in-itr-num <num>               Alter inner iterations (weightening count) of colorization algorithm (default=%d)\n", in_itr_num);
 333         printf(" -o --out-itr-num <num>              Alter outer iterations (complete turns) of colorization algorithm (default=%d)\n", out_itr_num);
 334         printf(" -q --quick                          Use quick render, but sufaces may be colorized incomplete\n");
 335         printf(" -z --zscale <levels>                How many grids (staring with the finest) should be scaled in z direction to generate the next coarse grid ");
 336         if (scalexyz < 999)
 337                 printf("(default=%d)\n", scalexyz);
 338         else
 339                 printf("(default=infinite)\n");
 340         printf(" -b --brightness-contrast [0 | 1]    Apply brightnes and contrast, if defined in palette by GUI (default=%d)\n", bright_contrast);
 341         printf(" -a --alpha-change [0 | 1]           Apply alpha channel change, if defined in palette by GUI (default=%d)\n", alpha_change);
 342 #ifdef WITH_OPENCV
 343         printf(" -f --optical-flow [0 | 1]           Apply optical flow, if defined by GUI (default=%d)\n", optical_flow);
 344 #endif
 345         printf(" -s --scale [1..n]                   Scale down by the given factor for quick and dirty previews (default=%d)\n", scale);
 346         printf(" -t --test <test>                    Generate test images. Use 'help' for list of tests\n");
 347 }
 348
 349 static void print_test_help()
 350 {
 351         printf(" -t --test <test>        Generate test images...\n");
 352 #ifdef WITH_OPENCV
 353         printf("           flow-next     Optical flow plane to next image\n");
 354         printf("           flow-prev     Optical flow plane to previous image\n");
 355 #endif
 356         printf("           marked        Only apply marked colors to grey image\n");
 357         printf("           mask          Show mask of marked areas\n");
 358         printf("           mask+color    Show mask of marked areas + color\n");
 359         printf("           bc-only       Only apply brightness+contrast, leave colors of grey image as is\n");
 360         printf("           bc-image      Show brightness+contrast change on grey image as uv components\n");
 361         printf("           alpha         Show the image with alpha channel only\n");
 362         printf("           no-alpha      Show the image without alpha channel, to see pixles that are made transparent\n");
 363         printf("           removal-image Show the image with \"transparency removal layer\" only, but keep u and v\n");
 364 }
 365
 366 /*
 367  * main function
 368  */
 369
 370 int main(int argc, char *argv[])
 371 {
 372         darray_t *gI = NULL, *cI = NULL, *mI = NULL, *I = NULL;
 373         darray_t *flow = NULL, *flow_i = NULL;
 374         double *ptr_gI = NULL, *ptr_cI = NULL, *ptr_y = NULL, *ptr_u = NULL, *ptr_v = NULL, *ptr_a = NULL, *ptr_r = NULL, *ptr_b = NULL, *ptr_c = NULL, *ptr_m = NULL;
 375         double diff, sum;
 376         int dims[4];
 377         int w = 0, h = 0, load_w, load_h, k = 1, index = 0, z;
 378         unsigned short *img = NULL;
 379         unsigned char *mark_buffer = NULL;
 380         int rc, x, y, i, ii;
 381         time_t start, end;
 382         const char* filename;
 383         char first_filename[256];
 384         int seq_offset = 0, seq_next = 0;
 385         int features, change_bc, change_alpha;
 386         char *feat_names[20];
 387         int skip_args;
 388
 389         skip_args = handle_options(argc, argv);
 390         argc -= skip_args;
 391         argv += skip_args;
 392
 393         if (argc <= 1) {
 394                 print_help(argv[0]);
 395                 return 0;
 396         }
 397
 398 next_sequence:
 399         if (argc > 1 && !strcmp(argv[1], "sequence")) {
 400                 k = load_sequence(&seq_offset, &seq_next, first_filename);
 401                 if (k == 0)
 402                         return 0;
 403                 printf("Got %d frames from sequence (frames %d..%d)\n", k, seq_offset, seq_offset + k - 1);
 404                 if (argc > 2 && (!strcmp(argv[2], "list") || atoi(argv[2]) > seq_offset)) {
 405                         seq_offset = seq_next;
 406                         goto next_sequence;
 407                 }
 408         } else if (argc <= 3) {
 409                 print_help(argv[0]);
 410                 return 0;
 411         } else if (argc > 5) {
 412                 k = atoi(argv[4]);
 413                 index = atoi(argv[5]);
 414         }
 415         if (k <= 0)
 416                 return 0;
 417
 418 #ifdef SINGLE_K_TEST
 419         if (k > SINGLE_K_TEST)
 420                 k = SINGLE_K_TEST;
 421 #endif
 422
 423         time(&start);
 424
 425         change_bc = change_alpha = 0;
 426         for (z = 0; z < k; z++) {
 427                 if (sequence) {
 428                         filename = sequence[z].filename;
 429                         /* first_filename is set by load_sequence */
 430                 } else {
 431                         filename = argv[1];
 432                         strcpy(first_filename, argv[1]);
 433                 }
 434 #ifdef WITH_OPENCV
 435                 // load flow settings
 436                 if (sequence && optical_flow)
 437                         flow_default();
 438 #endif
 439                 load_settings(first_filename);
 440 #ifdef WITH_OPENCV
 441                 // load flow settings
 442                 if (sequence && optical_flow) {
 443                         if (flow_enable == 0 && (test == FLOW_NEXT || test == FLOW_PREV)) {
 444                                 fprintf(stderr, "Cannot test optical flow, because it is not enabled by GUI.\n");
 445                                 exit (0);
 446                         }
 447                 }
 448 #endif
 449                 // load original image and convert their RGB components to double RGB array
 450                 img = load_img(&load_w, &load_h, filename, index + z);
 451                 if (!img) {
 452                         fprintf(stderr, "Failed to load grey image '%s'\n", filename);
 453                         return 0;
 454                 }
 455                 scale_img(img, load_w, load_h, scale);
 456                 if (z == 0) {
 457                         w = load_w / scale;
 458                         h = load_h / scale;
 459                 }
 460                 if (load_w/scale != w || load_h/scale != h) {
 461                         fprintf(stderr, "Error: All input images must have equal dimenstions.\n");
 462                         return 0;
 463                 }
 464                 // now we know the dimensions, so we can create input arrays
 465                 if (!gI) {
 466                         dims[0] = w; dims[1] = h; dims[2] = 3; dims[3] = k;
 467                         gI = darrayCreate(4, dims);
 468                 }
 469                 if (!gI) {
 470                         printf("failed to create grey image array\n");
 471                         exit (0);
 472                 }
 473                 if (!cI) {
 474                         dims[0] = w; dims[1] = h; dims[2] = 3; dims[3] = k;
 475                         cI = darrayCreate(4, dims);
 476                 }
 477                 if (!cI) {
 478                         printf("failed to create marked image array\n");
 479                         exit (0);
 480                 }
 481                 img2array_short(img, w, h, darrayGetPr(gI) + w*h*3*z, w, h);
 482                 free(img);
 483
 484                 if (sequence || !strcmp(argv[2], "marked")) {
 485                         char name[256];
 486                         unsigned char c;
 487                         // load marked mask and convert their RGB components to double YUV array
 488                         memcpy(darrayGetPr(cI) + w*h*3*z, darrayGetPr(gI) + w*h*3*z, w*h*3 * sizeof(double));
 489                         /* add extra memory for unscaled data to prevent buffer overflow */
 490                         if (!mark_buffer)
 491                                 mark_buffer = (unsigned char *)malloc(w*h*k + load_w*load_h);
 492                         if (!mark_buffer) {
 493                                 printf("no memory for mark buffer\n");
 494                                 exit (0);
 495                         }
 496                         if (load_palette(first_filename)) {
 497                                 printf("failed to load palette for file: '%s'\n", filename);
 498                                 exit (0);
 499                         }
 500                         sprintf(name, filename, index + z);
 501                         /* always load full unscaled image, then scale down */
 502                         if (load_marked(mark_buffer + w*h*z, load_w, load_h, name) == 0) {
 503                                 scale_mark(mark_buffer + w*h*z, load_w, load_h, scale);
 504                                 ptr_cI = darrayGetPr(cI) + w*h*3*z;
 505                                 for (y = 0; y < h; y++) {
 506                                         for (x = 0; x < w; x++) {
 507                                                 /* do not apply mask on index 0 */
 508                                                 c = mark_buffer[y*w+x + w*h*z];
 509                                                 if (c == 0)
 510                                                         continue;
 511                                                 /* check for any brightness/contrast change */
 512                                                 if (bright_contrast && (mark_palette[c-1].bright != 0 || mark_palette[c-1].contrast != 1))
 513                                                         change_bc = 1;
 514                                                 /* check for any alpha change */
 515                                                 if (alpha_change && mark_palette[c-1].alpha < 1)
 516                                                         change_alpha = 1;
 517                                                 /* do not apply white pixles, this meas: keep original color */
 518                                                 if (mark_palette[c-1].r == 255 && mark_palette[c-1].g == 255 && mark_palette[c-1].b == 255)
 519                                                         continue;
 520                                                 ptr_cI[y*w+x] = mark_palette[c-1].r / 255.0F;
 521                                                 ptr_cI[y*w+x + w*h] = mark_palette[c-1].g / 255.0F;
 522                                                 ptr_cI[y*w+x + w*h*2] = mark_palette[c-1].b / 255.0F;
 523                                         }
 524                                 }
 525                         } else
 526                                 memset(mark_buffer + w*h*z, 0, w*h);
 527                 } else {
 528                         // load marked image and convert their RGB components to double YUV array
 529                         img = load_img(&load_w, &load_h, argv[2], index + z);
 530                         if (!img) {
 531                                 scale_img(img, load_w, load_h, scale);
 532                                 if (load_w/scale != w || load_h/scale != h) {
 533                                         fprintf(stderr, "Error: All input images must have equal dimenstions.\n");
 534                                         return 0;
 535                                 }
 536                                 img2array_short(img, w, h, darrayGetPr(cI) + w*h*3*z, w, h);
 537                                 free(img);
 538                         } else {
 539                                 fprintf(stderr, "Failed to load marked image, omitting...\n");
 540                                 memcpy(darrayGetPr(cI) + w*h*3*z, darrayGetPr(gI) + w*h*3*z, w*h*3 * sizeof(double));
 541                         }
 542                 }
 543         }
 544
 545         rc = alloc_I_arrays(&I, &mI, w, h, k, &features, feat_names, change_alpha, change_bc);
 546         if (rc)
 547                 exit(0);
 548
 549         for (z = 0; z < k; z++) {
 550                 set_I_ptr(I, mI, w, h, z, features, change_alpha, change_bc, &ptr_y, &ptr_u, &ptr_v, &ptr_a, &ptr_r, &ptr_b, &ptr_c, &ptr_m);
 551                 ptr_gI = darrayGetPr(gI) + w*h*3*z;
 552                 ptr_cI = darrayGetPr(cI) + w*h*3*z;
 553
 554                 // convert original image into YUV
 555                 rgb2yuv(ptr_gI, ptr_gI, w, h);
 556                 // convert maked image into YUV
 557                 rgb2yuv(ptr_cI, ptr_cI, w, h);
 558
 559                 if (sequence || !strcmp(argv[2], "marked")) {
 560                         unsigned char c;
 561                         // use marked mask to fill markIm
 562                         for (y = 0; y < h; y++) {
 563                                 for (x = 0; x < w; x++) {
 564                                         /* do not apply mask on index 0 */
 565                                         c = mark_buffer[y*w+x + w*h*z];
 566                                         if (c)
 567                                                 ptr_m[y*w+x] = 1.0F;
 568                                         else
 569                                                 ptr_m[y*w+x] = 0.0F;
 570                                 }
 571                         }
 572                 } else {
 573                         // fill color image with marked pixles
 574                         // - calculate the difference between two images (original image - color image)
 575                         // - convert into absolute (positive values)
 576                         // - sum all components to get grey image
 577                         // - apply threshold (pixle is 1F, if the absolute difference is > 0.01F)
 578                         // original code: markIm=(sum(abs(gI-cI),3)>0.01); (according to developers of the algorithm)
 579                         for (i = 0, ii = w * h; i < ii; i++) {
 580                                 diff = 0;
 581                                 sum = ptr_gI[i] - ptr_cI[i];
 582                                 if (sum < 0)
 583                                         diff -= sum;
 584                                 else
 585                                         diff += sum;
 586                                 sum = ptr_gI[i + ii] - ptr_cI[i + ii];
 587                                 if (sum < 0)
 588                                         diff -= sum;
 589                                 else
 590                                         diff += sum;
 591                                 sum = ptr_gI[i + ii + ii] - ptr_cI[i + ii + ii];
 592                                 if (sum < 0)
 593                                         diff -= sum;
 594                                 else
 595                                         diff += sum;
 596                                 if (diff > 0.01)
 597                                         ptr_m[i] = 1.0;
 598                                 else
 599                                         ptr_m[i] = 0.0;
 600                         }
 601                 }
 602
 603                 prepare_arrays(w, h, change_alpha, change_bc, mark_buffer+w*h*z, ptr_gI, ptr_cI, ptr_y, ptr_u, ptr_v, ptr_a, ptr_r, ptr_b, ptr_c, ptr_m, test);
 604         }
 605
 606 #ifdef WITH_OPENCV
 607         if (k > 1 && flow_enable) {
 608                 /* create flow vectors */
 609                 dims[0] = w; dims[1] = h; dims[2] = k - 1; dims[3] = 2;
 610                 flow = darrayCreate(4, dims);
 611                 if (!flow) {
 612                         printf("failed to create array\n");
 613                         exit (0);
 614                 }
 615                 flow_i = darrayCreate(4, dims);
 616                 if (!flow_i) {
 617                         printf("failed to create array\n");
 618                         exit (0);
 619                 }
 620                 printf("Calculating optical flow for %d frames: window=%d\n", k, flow_window/scale);
 621         } else if (k > 1)
 622                 printf("Note: Optical flow is not activated!\n");
 623         for (z = 0; z < k-1; z++) {
 624                 if (flow)
 625                         create_flow_maps(NULL, darrayGetPr(gI) + w*h*3*(z+1), darrayGetPr(gI) + w*h*3*z, w, h, flow_window/scale, 0, NULL, NULL, darrayGetPr(flow) + w*h*z, darrayGetPr(flow) + w*h*z + w*h*(k-1), NULL);
 626                 if (flow_i)
 627                         create_flow_maps(darrayGetPr(gI) + w*h*3*z, NULL, darrayGetPr(gI) + w*h*3*(z+1), w, h, flow_window/scale, 0, darrayGetPr(flow_i) + w*h*z, darrayGetPr(flow_i) + w*h*z + w*h*(k-1), NULL, NULL, NULL);
 628         }
 629 #else
 630         if (k > 1)
 631                 printf("Note: Optical flow is not compiled in!\n");
 632 #endif
 633
 634         darrayDestroy(gI);
 635         gI = NULL;
 636         darrayDestroy(cI);
 637         cI = NULL;
 638
 639         if (test != FLOW_NEXT && test != FLOW_PREV && test != MARKED && test != MASK && test != MASK_COLOR && test != BC_ONLY && test != BC_IMAGE) {
 640                 printf("Colorizing %d frames, please wait...\n", k);
 641                 rc = colorize(I, mI, flow, flow_i, in_itr_num, out_itr_num, quick, scalexyz, feat_names, NULL);
 642                 if (rc < 0) {
 643                         if (k > 1)
 644                                 printf("No memory! Use smaller frames or less frames between key frames or add more memory.");
 645                         else
 646                                 printf("No memory! Use smaller image or add more memory.");
 647                         exit(-1);
 648                 }
 649         }
 650
 651         for (z = 0; z < k; z++) {
 652                 set_I_ptr(I, mI, w, h, z, features, change_alpha, change_bc, &ptr_y, &ptr_u, &ptr_v, &ptr_a, &ptr_r, &ptr_b, &ptr_c, &ptr_m);
 653                 postpare_arrays(w, h, change_alpha, change_bc, ptr_y, ptr_u, ptr_v, ptr_a, ptr_r, ptr_b, ptr_c, ptr_m, test);
 654
 655 #ifdef WITH_OPENCV
 656                 if (test == FLOW_NEXT || test == FLOW_PREV) {
 657                         double *ptr_f1 = NULL, *ptr_f2 = NULL;
 658                         /* apply flow planes to result image as u and y vector */
 659                         if (test == FLOW_NEXT) {
 660                                 if (flow) {
 661                                         ptr_f1 = darrayGetPr(flow) + w*h*z;
 662                                         ptr_f2 = darrayGetPr(flow) + w*h*z*(k-1);
 663                                 }
 664                         } else {
 665                                 if (flow_i) {
 666                                         ptr_f1 = darrayGetPr(flow_i) + w*h*z;
 667                                         ptr_f2 = darrayGetPr(flow_i) + w*h*z*(k-1);
 668                                 }
 669                         }
 670                         if (ptr_f1 && ptr_f1) {
 671                                 for (y = 0; y < h; y++) {
 672                                         for (x = 0; x < w; x++) {
 673                                                 ptr_y[w*y+x] = 0.5;
 674                                                 if (z < k-1) {
 675                                                         ptr_u[w*y+x] = ptr_f1[w * y + x] / 50;
 676                                                         ptr_v[w*y+x] = ptr_f2[w * y + x] / 50;
 677                                                 } else {
 678                                                         ptr_u[w*y+x] = 0;
 679                                                         ptr_v[w*y+x] = 0;
 680                                                 }
 681                                         }
 682                                 }
 683                         }
 684                 }
 685 #endif
 686
 687                 // save result YUV array to image with RGB components
 688                 yuv2rgb(ptr_y, ptr_y, w, h);
 689                 if (sequence) {
 690                         static char name[256], *p, *q;
 691                         p = sequence[z].filename;
 692                         while((q = strchr(p, DIR_SEPERATOR)))
 693                                 p = q + 1;
 694                         if (output_prefix[0] == '\0') {
 695                                 strcpy(name, sequence[z].filename);
 696                                 name[p - sequence[z].filename] = '\0';
 697                                 strcat(name, "colorized_");
 698                         } else {
 699                                 strcpy(name, output_prefix);
 700                         }
 701                         strcat(name, p);
 702                         filename = name;
 703                 } else
 704                         filename = argv[3];
 705                 /* don't save alpha on these tests */
 706                 if (test == ALPHA || test == REMOVAL_IMAGE || test == NO_ALPHA)
 707                         save_img_array(ptr_y, w, h, 0, filename, index + z);
 708                 else
 709                         save_img_array(ptr_y, w, h, change_alpha, filename, index + z);
 710         }
 711
 712         time(&end);
 713         printf("Elapsed time: %d minutes, %d seconds\n", (int)(end-start)/60, (int)(end-start)%60);
 714
 715         // destroy
 716         darrayDestroy(I);
 717         I = NULL;
 718         darrayDestroy(mI);
 719         mI = NULL;
 720         darrayDestroy(flow);
 721         flow = NULL;
 722         darrayDestroy(flow_i);
 723         flow_i = NULL;
 724
 725         free(mark_buffer);
 726         mark_buffer = NULL;
 727
 728         darrayDone();
 729
 730 #ifdef SINGLE_K_TEST
 731         exit(0);
 732 #endif
 733         if (sequence) {
 734                 /* if end frame is not given or if not reached */
 735                 if (argc <= 3 || atoi(argv[3]) > seq_offset + k) {
 736                         seq_offset = seq_offset + k - 1;
 737                         goto next_sequence;
 738                 }
 739         }
 740
 741         return 0;
 742 }
 743