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 "ppm.h"
  11 #include "yuv.h"
  12 #include "mark.h"
  13 #include "dir_seperator.h"
  14 #ifdef WITH_OPENCV
  15 #include "opticalflow.h"
  16 #endif
  17
  18 #define min(x,y) ((x < y) ? x : y)
  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  * scaling
 185  */
 186
 187 /* scale down image in img_buffer by calculating average */
 188 static void scale_img(unsigned short *img_buffer, int width, int height, int scale)
 189 {
 190         int w, h, i, j, x, y;
 191         int r, g, b;
 192
 193         if (scale == 1)
 194                 return;
 195
 196         w = width / scale;
 197         h = height / scale;
 198
 199         for (i = 0; i < h; i++) {
 200                 for (j = 0; j < w; j++) {
 201                         r = g = b = 0;
 202                         for (y = 0; y < scale; y++) {
 203                                 for (x = 0; x < scale; x++) {
 204                                         r += img_buffer[((i*scale+y) * width + j*scale+x) * 3 + 0];
 205                                         g += img_buffer[((i*scale+y) * width + j*scale+x) * 3 + 1];
 206                                         b += img_buffer[((i*scale+y) * width + j*scale+x) * 3 + 2];
 207                                 }
 208                         }
 209                         img_buffer[(i * w + j)*3 + 0] = r / scale / scale;
 210                         img_buffer[(i * w + j)*3 + 1] = g / scale / scale;
 211                         img_buffer[(i * w + j)*3 + 2] = b / scale / scale;
 212                 }
 213         }
 214 }
 215
 216 /* scale down mark map in mark_buffer */
 217 static void scale_mark(unsigned char *mark_buffer, int width, int height, int scale)
 218 {
 219         int w, h, i, j, x, y;
 220         unsigned char c, temp;
 221
 222         if (scale == 1)
 223                 return;
 224
 225         w = width / scale;
 226         h = height / scale;
 227
 228         for (i = 0; i < h; i++) {
 229                 for (j = 0; j < w; j++) {
 230                         c = 0;
 231                         /* always use one index other than 0, if there is any in an areaa to be shrinked */
 232                         for (y = 0; y < scale; y++) {
 233                                 for (x = 0; x < scale; x++) {
 234                                         temp = mark_buffer[(i*scale+y) * width + j*scale+x];
 235                                         if (temp)
 236                                                 c = temp;
 237                                 }
 238                         }
 239                         mark_buffer[i * w + j] = c;
 240                 }
 241         }
 242 }
 243
 244 /*
 245  * options
 246  */
 247
 248 static int in_itr_num = 5, out_itr_num = 1, optical_flow = 1, bright_contrast = 1;
 249 int scale = 1, scalexyz = 999;
 250
 251 static enum test {
 252         NO_TEST = 0,
 253         FLOW_NEXT,
 254         FLOW_PREV,
 255         MARKED,
 256         MASK,
 257         MASK_COLOR,
 258         BC_ONLY,
 259         BC_IMAGE,
 260 } test = NO_TEST;
 261
 262 static int parse_test(const char *arg)
 263 {
 264         if (!strcmp(arg, "help")) {
 265                 print_test_help();
 266                 exit(0);
 267         }
 268 #ifdef WITH_OPENCV
 269         if (!strcmp(arg, "flow-next"))
 270                 return FLOW_NEXT;
 271         if (!strcmp(arg, "flow-prev"))
 272                 return FLOW_PREV;
 273 #endif
 274         if (!strcmp(arg, "marked"))
 275                 return MARKED;
 276         if (!strcmp(arg, "mask"))
 277                 return MASK;
 278         if (!strcmp(arg, "mask+color"))
 279                 return MASK_COLOR;
 280         if (!strcmp(arg, "bc-only"))
 281                 return BC_ONLY;
 282         if (!strcmp(arg, "bc-image"))
 283                 return BC_IMAGE;
 284
 285         return NO_TEST;
 286 }
 287
 288 static int handle_options(int argc, char **argv)
 289 {
 290         int skip_args = 0;
 291
 292         while (1) {
 293                 int option_index = 0, c;
 294                 static struct option long_options[] = {
 295                         {"help", 0, 0, 'h'},
 296                         {"depth", 1, 0, 'd'},
 297                         {"in-itr-num", 1, 0, 'i'},
 298                         {"out-itr-num", 1, 0, 'o'},
 299                         {"zscale", 1, 0, 'z'},
 300                         {"brightness-contrast", 1, 0, 'b'},
 301                         {"optical-flow", 1, 0, 'f'},
 302                         {"scale", 1, 0, 's'},
 303                         {"test", 1, 0, 't'},
 304                         {0, 0, 0, 0},
 305                 };
 306
 307                 c = getopt_long(argc, argv, "hd:i:o:z:b:f:s:t:", long_options, &option_index);
 308
 309                 if (c == -1)
 310                         break;
 311
 312                 switch (c) {
 313                 case 'h':
 314                         print_help(argv[0]);
 315                         exit(0);
 316                 case 'd':
 317                         save_depth = atoi(optarg);
 318                         skip_args += 2;
 319                         break;
 320                 case 'i':
 321                         in_itr_num = atoi(optarg);
 322                         skip_args += 2;
 323                         break;
 324                 case 'o':
 325                         out_itr_num = atoi(optarg);
 326                         skip_args += 2;
 327                         break;
 328                 case 'z':
 329                         scalexyz = atoi(optarg);
 330                         skip_args += 2;
 331                         break;
 332                 case 'b':
 333                         bright_contrast = atoi(optarg);
 334                         skip_args += 2;
 335                         break;
 336                 case 'f':
 337                         optical_flow = atoi(optarg);
 338                         skip_args += 2;
 339                         break;
 340                 case 's':
 341                         scale = atoi(optarg);
 342                         skip_args += 2;
 343                         break;
 344                 case 't':
 345                         test = parse_test(optarg);
 346                         if (!test) {
 347                                 fprintf(stderr, "Invalid test '%s', use '--test help' to get a list of tests\n", optarg);
 348                                 exit(-1);
 349                         }
 350                         skip_args += 2;
 351                         break;
 352                 default:
 353                         break;
 354                 }
 355         }
 356
 357         return skip_args;
 358 }
 359
 360 /*
 361  * usage
 362  */
 363
 364 static void print_help(const char *app)
 365 {
 366         printf("Colorize version %s\n\n",
 367 #include "../version.h"
 368         );
 369         printf("Usage: %s [options] <grey ppm image> <marked ppm image> <result ppm image> [<frames> <start>]\n", app);
 370         printf("       Colorize grey image using maked image and save to result image.\n");
 371         printf("       If frames and start frame is given, image names must include printf integer formatting (e.g. %%04d).\n");
 372         printf("Usage: %s [options] <grey ppm image> marked <result ppm image>\n", app);
 373         printf("       Colorize grey image using marked mask + palette and save to result image.\n");
 374         printf("Usage: %s [options] sequence [list | <start with frame> [<stop with frame>]]\n", app);
 375         printf("       Colorize movie sequence (generated by colorize gui) as found in the current directory.\n");
 376         printf("       Use list to view sequence segments between keyframes.\n");
 377         printf("\nOptions:\n");
 378         printf(" -h --help                           This help\n");
 379         printf(" -d --depth <bits>                   Save images with given color bit depth (default=%d)\n", save_depth);
 380         printf(" -i --in-itr-num <num>               Alter inner iterations (weightening count) of colorization algorithm (default=%d)\n", in_itr_num);
 381         printf(" -o --out-itr-num <num>              Alter outer iterations (complete turns) of colorization algorithm (default=%d)\n", out_itr_num);
 382         printf(" -z --zscale <levels>                How many grids (staring with the finest) should be scaled in z direction to generate the next coarse grid ");
 383         if (scalexyz < 999)
 384                 printf("(default=%d)\n", scalexyz);
 385         else
 386                 printf("(default=infinite)\n");
 387         printf(" -b --brightness-contrast [0 | 1]    Apply brightnes and contrast, if defined in palette by GUI (default=%d)\n", bright_contrast);
 388 #ifdef WITH_OPENCV
 389         printf(" -f --optical-flow [0 | 1]           Apply optical flow, if defined by GUI (default=%d)\n", optical_flow);
 390 #endif
 391         printf(" -s --scale [1..n]                   Scale down by the given factor for quick and dirty previews (default=%d)\n", scale);
 392         printf(" -t --test <test>                    Generate test images. Use 'help' for list of tests\n");
 393 }
 394
 395 static void print_test_help()
 396 {
 397         printf(" -t --test <test>        Generate test images...\n");
 398 #ifdef WITH_OPENCV
 399         printf("           flow-next     Optical flow plane to next image\n");
 400         printf("           flow-prev     Optical flow plane to previous image\n");
 401 #endif
 402         printf("           marked        Only apply makred colors to grey image\n");
 403         printf("           mask          Show mask of marked areas\n");
 404         printf("           mask+color    Show mask of marked areas + color\n");
 405         printf("           bc-only       Only apply brightness+contrast, leave colors of grey image as is\n");
 406         printf("           bc-image      Show brightness+contrast change on grey image as uv components\n");
 407 }
 408
 409 /*
 410  * main function
 411  */
 412
 413 int main(int argc, char *argv[])
 414 {
 415         darray_t *gI = NULL, *cI = NULL, *markIm = NULL, *ntscIm = NULL;
 416         darray_t *flow = NULL, *flow_i = NULL;
 417         double *ptr, *ptr2, *ptr3;
 418         double diff, sum;
 419         int dims[4];
 420         int w = 0, h = 0, load_w, load_h, k = 1, index = 0, z;
 421         unsigned short *img_buffer, *img_buffer_all = NULL;
 422         unsigned char *mark_buffer = NULL;
 423         int rc, x, y, i, ii;
 424         time_t start, end;
 425         const char* filename;
 426         char first_filename[256];
 427         int seq_offset = 0, seq_next = 0;
 428         int features, change_bc;
 429         int skip_args;
 430
 431         skip_args = handle_options(argc, argv);
 432         argc -= skip_args;
 433         argv += skip_args;
 434
 435         if (argc <= 1) {
 436                 print_help(argv[0]);
 437                 return 0;
 438         }
 439
 440 next_sequence:
 441         if (argc > 1 && !strcmp(argv[1], "sequence")) {
 442                 k = load_sequence(&seq_offset, &seq_next, first_filename);
 443                 if (k == 0)
 444                         return 0;
 445                 printf("Got %d frames from sequence (frames %d..%d)\n", k, seq_offset, seq_offset + k - 1);
 446                 if (argc > 2 && (!strcmp(argv[2], "list") || atoi(argv[2]) > seq_offset)) {
 447                         seq_offset = seq_next;
 448                         goto next_sequence;
 449                 }
 450         } else if (argc <= 3) {
 451                 print_help(argv[0]);
 452                 return 0;
 453         } else if (argc > 5) {
 454                 k = atoi(argv[4]);
 455                 index = atoi(argv[5]);
 456         }
 457         if (k <= 0)
 458                 return 0;
 459
 460 #ifdef SINGLE_K_TEST
 461         if (k > SINGLE_K_TEST)
 462                 k = SINGLE_K_TEST;
 463 #endif
 464
 465         time(&start);
 466
 467         change_bc = 0;
 468         for (z = 0; z < k; z++) {
 469                 if (sequence) {
 470                         filename = sequence[z].filename;
 471                         /* first_filename is set by load_sequence */
 472                 } else {
 473                         filename = argv[1];
 474                         strcpy(first_filename, argv[1]);
 475                 }
 476 #ifdef WITH_OPENCV
 477                 // load flow settings
 478                 if (sequence || !strcmp(argv[2], "marked")) {
 479                         flow_default();
 480                         if (optical_flow)
 481                                 load_flow(first_filename);
 482                         if (flow_enable == 0 && (test == FLOW_NEXT || test == FLOW_PREV)) {
 483                                 fprintf(stderr, "Cannot test optical flow, because it is not enabled by GUI.\n");
 484                                 exit (0);
 485                         }
 486                 }
 487 #endif
 488                 // load original image and convert their RGB components to double RGB array
 489                 rc = load_img(-1, &img_buffer, &load_w, &load_h, filename, index + z);
 490                 if (rc) {
 491                         fprintf(stderr, "Failed to load grey image '%s'\n", filename);
 492                         return 0;
 493                 }
 494                 scale_img(img_buffer, load_w, load_h, scale);
 495                 if (z == 0) {
 496                         w = load_w / scale;
 497                         h = load_h / scale;
 498                 }
 499                 if (load_w/scale != w || load_h/scale != h) {
 500                         fprintf(stderr, "Error: All input images must have equal dimenstions.\n");
 501                         return 0;
 502                 }
 503                 // now we know the dimensions, so we can create input arrays
 504                 if (!gI) {
 505                         dims[0] = w; dims[1] = h; dims[2] = 3; dims[3] = k;
 506                         gI = darrayCreate(4, dims);
 507                 }
 508                 if (!gI) {
 509                         printf("failed to create grey image array\n");
 510                         exit (0);
 511                 }
 512                 if (!cI) {
 513                         dims[0] = w; dims[1] = h; dims[2] = 3; dims[3] = k;
 514                         cI = darrayCreate(4, dims);
 515                 }
 516                 if (!cI) {
 517                         printf("failed to create marked image array\n");
 518                         exit (0);
 519                 }
 520                 ptr = darrayGetPr(gI) + w*h*3*z;
 521                 img2array(img_buffer, w, h, ptr, w, h);
 522 #ifdef WITH_OPENCV
 523                 if (k > 1 && flow_enable) {
 524                         if (!img_buffer_all)
 525                                 img_buffer_all = malloc(w*h*3*k*sizeof(unsigned short));
 526                         if (!img_buffer_all) {
 527                                 printf("failed to create grey image array\n");
 528                                 exit (0);
 529                         }
 530                         memcpy(img_buffer_all + w*h*3*z, img_buffer, w*h*3*sizeof(unsigned short));
 531                 }
 532 #endif
 533                 free(img_buffer);
 534
 535                 if (sequence || !strcmp(argv[2], "marked")) {
 536                         char name[256];
 537                         unsigned char c;
 538                         // load marked mask and convert their RGB components to double YUV array
 539                         memcpy(darrayGetPr(cI) + w*h*3*z, darrayGetPr(gI) + w*h*3*z, w*h*3 * sizeof(double));
 540                         /* add extra memory for unscaled data to prevent buffer overflow */
 541                         if (!mark_buffer)
 542                                 mark_buffer = (unsigned char *)malloc(w*h*k + load_w*load_h);
 543                         if (!mark_buffer) {
 544                                 printf("no memory for mark buffer\n");
 545                                 exit (0);
 546                         }
 547                         if (load_palette(first_filename)) {
 548                                 printf("failed to load palette for file: '%s'\n", filename);
 549                                 exit (0);
 550                         }
 551                         sprintf(name, filename, index + z);
 552                         /* always load full unscaled image, then scale down */
 553                         if (load_marked(mark_buffer + w*h*z, load_w, load_h, name) == 0) {
 554                                 scale_mark(mark_buffer + w*h*z, load_w, load_h, scale);
 555                                 ptr = darrayGetPr(cI) + w*h*3*z;
 556                                 for (y = 0; y < h; y++) {
 557                                         for (x = 0; x < w; x++) {
 558                                                 /* do not apply mask on index 0 */
 559                                                 c = mark_buffer[y*w+x + w*h*z];
 560                                                 if (c == 0)
 561                                                         continue;
 562                                                 /* check for any brightness/contrast change */
 563                                                 if (bright_contrast && (mark_palette[c-1].bright != 0 || mark_palette[c-1].contrast != 1))
 564                                                         change_bc = 1;
 565                                                 /* do not apply white pixles, this meas: keep original color */
 566                                                 if (mark_palette[c-1].r == 255 && mark_palette[c-1].g == 255 && mark_palette[c-1].b == 255)
 567                                                         continue;
 568                                                 ptr[y*w+x] = mark_palette[c-1].r / 255.0F;
 569                                                 ptr[y*w+x + w*h] = mark_palette[c-1].g / 255.0F;
 570                                                 ptr[y*w+x + w*h*2] = mark_palette[c-1].b / 255.0F;
 571                                         }
 572                                 }
 573                         } else
 574                                 memset(mark_buffer + w*h*z, 0, w*h);
 575                 } else {
 576                         // load marked image and convert their RGB components to double YUV array
 577                         rc = load_img(-1, &img_buffer, &load_w, &load_h, argv[2], index + z);
 578                         if (!rc) {
 579                                 if (load_w/scale != w || load_h/scale != h) {
 580                                         fprintf(stderr, "Error: All input images must have equal dimenstions.\n");
 581                                         return 0;
 582                                 }
 583                                 ptr = darrayGetPr(cI) + w*h*3*z;
 584                                 img2array(img_buffer, w, h, ptr, w, h);
 585                                 free(img_buffer);
 586                         } else {
 587                                 fprintf(stderr, "Failed to load marked image, omitting...\n");
 588                                 memcpy(darrayGetPr(cI) + w*h*3*z, darrayGetPr(gI) + w*h*3*z, w*h*3 * sizeof(double));
 589                         }
 590                 }
 591         }
 592
 593         /* create color mask and ntsc arrays for the colorization process */
 594         dims[0] = w; dims[1] = h; dims[2] = k;
 595         markIm = darrayCreate(3, dims);
 596         if (!markIm) {
 597                 printf("failed to create mark array\n");
 598                 exit (0);
 599         }
 600         features = (change_bc) ? 4 : 2;
 601         dims[0] = w; dims[1] = h; dims[2] = features+1; dims[3] = k;
 602         ntscIm = darrayCreate(4, dims);
 603         if (!ntscIm) {
 604                 printf("failed to create ntsc array\n");
 605                 exit (0);
 606         }
 607
 608         for (z = 0; z < k; z++) {
 609                 if (sequence || !strcmp(argv[2], "marked")) {
 610                         unsigned char c;
 611                         ptr = darrayGetPr(markIm) + w*h*z;
 612                         // use marked mask to fill markIm
 613                         for (y = 0; y < h; y++) {
 614                                 for (x = 0; x < w; x++) {
 615                                         if (x < w && y < h) {
 616                                                 /* do not apply mask on index 0 */
 617                                                 c = mark_buffer[y*w+x + w*h*z];
 618                                         } else
 619                                                 c = 0;
 620                                         if (c)
 621                                                 ptr[y*w+x] = 1.0F;
 622                                         else
 623                                                 ptr[y*w+x] = 0.0F;
 624                                 }
 625                         }
 626                 } else {
 627                         // fill color image with marked pixles
 628                         // - calculate the difference between two images (original image - color image)
 629                         // - convert into absolute (positive values)
 630                         // - sum all components to get grey image
 631                         // - apply threshold (pixle is 1F, if the absolute difference is > 0.01F)
 632                         // original code: markIm=(sum(abs(gI-cI),3)>0.01);
 633                         ptr = darrayGetPr(gI) + w*h*3*z;
 634                         ptr2 = darrayGetPr(cI) + w*h*3*z;
 635                         ptr3 = darrayGetPr(markIm) + w*h*z;
 636                         for (i = 0, ii = w * h; i < ii; i++) {
 637                                 diff = 0;
 638                                 sum = ptr[i] - ptr2[i];
 639                                 if (sum < 0)
 640                                         diff -= sum;
 641                                 else
 642                                         diff += sum;
 643                                 sum = ptr[i + ii] - ptr2[i + ii];
 644                                 if (sum < 0)
 645                                         diff -= sum;
 646                                 else
 647                                         diff += sum;
 648                                 sum = ptr[i + ii + ii] - ptr2[i + ii + ii];
 649                                 if (sum < 0)
 650                                         diff -= sum;
 651                                 else
 652                                         diff += sum;
 653                                 if (diff > 0.01)
 654                                         ptr3[i] = 1.0F;
 655                                 else
 656                                         ptr3[i] = 0.0F;
 657                         }
 658                 }
 659
 660                 // convert original image into YUV
 661                 ptr = darrayGetPr(gI) + w*h*3*z;
 662                 rgb2yuv(ptr, ptr, w, h);
 663
 664                 // convert maked image into YUV
 665                 ptr = darrayGetPr(cI) + w*h*3*z;
 666                 rgb2yuv(ptr, ptr, w, h);
 667
 668                 if (test != BC_ONLY) {
 669                         if (sequence || !strcmp(argv[2], "marked")) {
 670                                 unsigned char c;
 671                                 // generate NTSC image: use luminance from original image and chrominance from original or marked image
 672                                 ptr = darrayGetPr(gI) + w*h*3*z;
 673                                 ptr2 = darrayGetPr(cI) + w*h*3*z;
 674                                 ptr3 = darrayGetPr(ntscIm) + w*h*(features+1)*z;
 675                                 /* use original y component */
 676                                 memcpy(ptr3, ptr, w * h * sizeof(double));
 677                                 /* apply new uv components */
 678                                 for (y = 0; y < h; y++) {
 679                                         for (x = 0; x < w; x++) {
 680                                                 c = mark_buffer[y*w+x + w*h*z];
 681                                                 if (c == 0) {
 682                                                         ptr3[w * h + w * y + x] = ptr[w * h + w * y + x];
 683                                                         ptr3[w * h * 2 + w * y + x] = ptr[w * h * 2 + w * y + x];
 684                                                 } else {
 685                                                         ptr3[w * h + w * y + x] = ptr2[w * h + w * y + x];
 686                                                         ptr3[w * h * 2 + w * y + x] = ptr2[w * h * 2 + w * y + x];
 687                                                 }
 688                                         }
 689                                 }
 690                         } else {
 691                                 // generate NTSC image: use luminance from original image and chrominance from maked image
 692                                 ptr = darrayGetPr(gI) + w*h*3*z;
 693                                 ptr2 = darrayGetPr(cI) + w*h*3*z;
 694                                 ptr3 = darrayGetPr(ntscIm) + w*h*(features+1)*z;
 695                                 memcpy(ptr3, ptr, w * h * sizeof(double));
 696                                 memcpy(ptr3 + w * h, ptr2 + w * h, w * h * sizeof(double));
 697                                 memcpy(ptr3 + w * h * 2, ptr2 + w * h * 2, w * h * sizeof(double));
 698                         }
 699                 } else {
 700                         /* use grey image as result if BC_ONLY test is selected */
 701                         ptr = darrayGetPr(gI) + w*h*3*z;
 702                         ptr2 = darrayGetPr(ntscIm) + w*h*(features+1)*z;
 703                         memcpy(ptr2, ptr, w * h * 3 * sizeof(double));
 704                 }
 705
 706                 if (change_bc) {
 707                         unsigned char c;
 708                         ptr2 = darrayGetPr(ntscIm) + w*h*(features+1)*z;
 709                         /* use original y component */
 710                         memcpy(ptr2, ptr, w * h * sizeof(double));
 711                         /* apply brightness and contrast from makred pixles to uv components of grey image */
 712                         for (y = 0; y < h; y++) {
 713                                 for (x = 0; x < w; x++) {
 714                                         /* use unchanged brightness and contrast on index 0 */
 715                                         c = mark_buffer[y*w+x + w*h*z];
 716                                         if (c == 0) {
 717                                                 ptr2[y*w+x + w*h*3] = 0;
 718                                                 ptr2[y*w+x + w*h*4] = 0.1;
 719                                         } else {
 720                                                 ptr2[y*w+x + w*h*3] = mark_palette[c-1].bright / 10.0;
 721                                                 ptr2[y*w+x + w*h*4] = mark_palette[c-1].contrast / 10.0;
 722                                         }
 723                                 }
 724                         }
 725                 }
 726         }
 727
 728 #ifdef WITH_OPENCV
 729         if (k > 1 && flow_enable) {
 730                 /* create flow vectors */
 731                 dims[0] = w; dims[1] = h; dims[2] = k - 1; dims[3] = 2;
 732                 flow = darrayCreate(4, dims);
 733                 if (!flow) {
 734                         printf("failed to create array\n");
 735                         exit (0);
 736                 }
 737                 flow_i = darrayCreate(4, dims);
 738                 if (!flow_i) {
 739                         printf("failed to create array\n");
 740                         exit (0);
 741                 }
 742                 printf("Calculating optical flow for %d frames: window=%d\n", k, flow_window/scale);
 743         } else if (k > 1)
 744                 printf("Note: Optical flow is not activated!\n");
 745         for (z = 0; z < k-1; z++) {
 746                 if (flow)
 747                         create_flow_maps(NULL, img_buffer_all + w*h*3*(z+1), img_buffer_all + 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);
 748                 if (flow_i)
 749                         create_flow_maps(img_buffer_all + w*h*3*z, NULL, img_buffer_all + 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);
 750         }
 751 #else
 752         if (k > 1)
 753                 printf("Note: Optical flow is not compiled in!\n");
 754 #endif
 755         free(img_buffer_all);
 756         img_buffer_all = NULL;
 757
 758         darrayDestroy(gI);
 759         gI = NULL;
 760         darrayDestroy(cI);
 761         cI = NULL;
 762
 763         if (test != FLOW_NEXT && test != FLOW_PREV && test != MARKED && test != MASK && test != MASK_COLOR && test != BC_ONLY && test != BC_IMAGE) {
 764                 printf("Colorizing %d frames, please wait...\n", k);
 765                 rc = colorize(ntscIm, markIm, flow, flow_i, in_itr_num, out_itr_num, scalexyz);
 766                 if (rc < 0) {
 767                         if (k > 1)
 768                                 printf("No memory! Use smaller frames or less frames between key frames or add more memory.");
 769                         else
 770                                 printf("No memory! Use smaller image or add more memory.");
 771                         exit(-1);
 772                 }
 773         }
 774
 775         /* if we have a change, we apply brightness+contrast from ntscIm */
 776         if (change_bc) {
 777                 for (z = 0; z < k; z++) {
 778                         ptr = darrayGetPr(ntscIm) + w*h*(features+1)*z;
 779                         ptr2 = darrayGetPr(ntscIm) + w*h*(features+1)*z;
 780                         for (y = 0; y < h; y++) {
 781                                 for (x = 0; x < w; x++) {
 782                                         /* apply contrast */
 783                                         ptr2[w * y + x] = (ptr2[w * y + x] - 0.5) * ptr[w * h * 4 + w * y + x] * 10.0 + 0.5;
 784                                         /* apply brightness */
 785                                         ptr2[w * y + x] += ptr[w * h * 3 + w * y + x] * 10.0;
 786                                         if (ptr2[w * y + x] < 0)
 787                                                 ptr2[w * y + x] = 0;
 788                                         if (ptr2[w * y + x] > 1)
 789                                                 ptr2[w * y + x] = 1;
 790 #if 0
 791 #warning TEST: show brightness and contrast change as uv vectors on a grey array */
 792 ptr2[w * y + x] = 0.5;
 793 ptr2[w * h + w * y + x] = ptr[w * h + w * y + x] * 10;
 794 ptr2[w * h * 2 + w * y + x] = ptr[w * h * 2 + w * y + x] * 10 - 1;
 795 #endif
 796                                 }
 797                         }
 798                 }
 799         }
 800
 801 #ifdef WITH_OPENCV
 802         if (test == FLOW_NEXT || test == FLOW_PREV) {
 803                 /* apply flow planes to result image as u and y vector */
 804                 for (z = 0; z < k; z++) {
 805                         ptr = darrayGetPr(ntscIm) + w*h*(features+1)*z;
 806                         if (test == FLOW_NEXT) {
 807                                 ptr2 = darrayGetPr(flow) + w*h*z;
 808                                 ptr3 = darrayGetPr(flow) + w*h*z*(k-1);
 809                         } else {
 810                                 ptr2 = darrayGetPr(flow_i) + w*h*z;
 811                                 ptr3 = darrayGetPr(flow_i) + w*h*z*(k-1);
 812                         }
 813                         for (y = 0; y < h; y++) {
 814                                 for (x = 0; x < w; x++) {
 815                                         ptr[w * y + x] = 0.5;
 816                                         if (z < k-1) {
 817                                                 ptr[w * y + x + w*h] = ptr2[w * y + x] / 50;
 818                                                 ptr[w * y + x + w*h*2] = ptr3[w * y + x] / 50;
 819                                         } else {
 820                                                 ptr[w * y + x + w*h] = 0;
 821                                                 ptr[w * y + x + w*h*2] = 0;
 822                                         }
 823                                 }
 824                         }
 825                 }
 826         }
 827 #endif
 828
 829         if (test == MASK) {
 830                 /* apply maked mask as image */
 831                 for (z = 0; z < k; z++) {
 832                         ptr = darrayGetPr(ntscIm) + w*h*(features+1)*z;
 833                         ptr2 = darrayGetPr(markIm) + w*h*z;
 834                         for (y = 0; y < h; y++) {
 835                                 for (x = 0; x < w; x++) {
 836                                         ptr[w * y + x] = ptr2[w * y + x];
 837                                         ptr[w * y + x + w*h] = ptr2[w * y + x];
 838                                         ptr[w * y + x + w*h*2] = ptr2[w * y + x];
 839                                 }
 840                         }
 841                 }
 842         }
 843
 844         if (test == MASK_COLOR) {
 845                 /* apply maked mask on grey image */
 846                 for (z = 0; z < k; z++) {
 847                         ptr = darrayGetPr(ntscIm) + w*h*(features+1)*z;
 848                         ptr2 = darrayGetPr(markIm) + w*h*z;
 849                         for (y = 0; y < h; y++) {
 850                                 for (x = 0; x < w; x++) {
 851                                         /* darken unmarked areas, make maked areas with uniformed brightness */
 852                                         if (ptr2[w * y + x] < 0.5F)
 853                                                 ptr[w * y + x] = ptr[w * y + x] / 4;
 854                                         else
 855                                                 ptr[w * y + x] = 0.5F;
 856                                 }
 857                         }
 858                 }
 859         }
 860
 861         if (test == BC_IMAGE) {
 862                 /* apply bc image as result image */
 863                 for (z = 0; z < k; z++) {
 864                         ptr = darrayGetPr(ntscIm) + w*h*(features+1)*z;
 865                         ptr2 = darrayGetPr(ntscIm) + w*h*(features+1)*z;
 866                         /* use uniformed brightness as y component */
 867                         for (y = 0; y < h; y++) {
 868                                 for (x = 0; x < w; x++) {
 869                                         ptr[w * y + x] = 0.5F;
 870                                 }
 871                         }
 872                         if (change_bc) {
 873                                 ptr2 = darrayGetPr(ntscIm) + w*h*(features+1)*z;
 874                                 memcpy(ptr+w*h, ptr2+w*h*3, w * h * sizeof(double));
 875                                 memcpy(ptr+w*h*2, ptr2+w*h*4, w * h * sizeof(double));
 876                         } else {
 877                                 memset(ptr+w*h, 0, w * h * sizeof(double));
 878                                 memset(ptr+w*h*2, 0, w * h * sizeof(double));
 879                         }
 880                 }
 881         }
 882
 883         // save result YUV array to image with RGB components
 884         img_buffer = (unsigned short *)malloc(w*h*3*sizeof(unsigned short));
 885         if (!img_buffer) {
 886                 fprintf(stderr, "Failed to allocate image buffer\n");
 887                 return 0;
 888         }
 889         for (z = 0; z < k; z++) {
 890                 ptr = darrayGetPr(ntscIm) + w*h*(features+1)*z;
 891                 yuv2rgb(ptr, ptr, w, h);
 892                 array2img(ptr, w, h, img_buffer, w, h);
 893                 if (sequence) {
 894                         static char name[256], *p, *q;
 895                         p = sequence[z].filename;
 896                         while((q = strchr(p, DIR_SEPERATOR)))
 897                                 p = q + 1;
 898                         strcpy(name, sequence[z].filename);
 899                         name[p - sequence[z].filename] = '\0';
 900                         strcat(name, "colorized_");
 901                         strcat(name, p);
 902                         filename = name;
 903                 } else
 904                         filename = argv[3];
 905                 save_img(img_buffer, w, h, filename, index + z);
 906         }
 907         free(img_buffer);
 908
 909         time(&end);
 910         printf("Elapsed time: %d minutes, %d seconds\n", (int)(end-start)/60, (int)(end-start)%60);
 911
 912         // destroy
 913         darrayDestroy(ntscIm);
 914         ntscIm = NULL;
 915         darrayDestroy(flow);
 916         flow = NULL;
 917         darrayDestroy(flow_i);
 918         flow_i = NULL;
 919         darrayDestroy(markIm);
 920         markIm = NULL;
 921
 922         free(mark_buffer);
 923         mark_buffer = NULL;
 924
 925         darrayDone();
 926
 927 #ifdef SINGLE_K_TEST
 928         exit(0);
 929 #endif
 930         if (sequence) {
 931                 /* if end frame is not given or if not reached */
 932                 if (argc <= 3 || atoi(argv[3]) > seq_offset + k) {
 933                         seq_offset = seq_offset + k - 1;
 934                         goto next_sequence;
 935                 }
 936         }
 937
 938         return 0;
 939 }
 940