annotate Meerwald/wm_kund3_d.c @ 5:8191b855cd5e

Added tag v0.5 for changeset 9cf6ec970448
author Peter Meerwald <pmeerw@cosy.sbg.ac.at>
date Tue, 14 Aug 2007 21:13:29 +0200
parents acb6967ee76d
children f83ef905a63d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
1 #include "wm.h"
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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2 #include "signature.h"
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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3 #include "dwt.h"
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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4 #include "pgm.h"
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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5
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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6 char *progname;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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7
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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8 void usage(void) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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9 fprintf(stderr, "usage: %s [-e n] [-f n] [-F n] [-h] [-l n] [-o file] [-q n] [-s file] [-v n] file\n\n", progname);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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10 fprintf(stderr, "\t-e n\t\twavelet filtering method\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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11 fprintf(stderr, "\t-f n\t\tfilter number\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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12 fprintf(stderr, "\t-F file\t\tfilter definition file\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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13 fprintf(stderr, "\t-h\t\tprint usage\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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14 fprintf(stderr, "\t-l n\t\tembedding level\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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15 fprintf(stderr, "\t-o file\t\textracted signature file\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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16 fprintf(stderr, "\t-q n\t\tsignature strength\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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17 fprintf(stderr, "\t-s file\t\toriginal signature file\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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18 fprintf(stderr, "\t-v n\t\tverbosity level\n");
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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19 exit(0);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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20 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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21
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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22 int main(int argc, char *argv[]) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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23
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
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24 FILE *in = stdin;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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25 FILE *out = stdout;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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26 FILE *sig = NULL;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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27
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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28 gray **input_image;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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29
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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30 char signature_name[MAXPATHLEN];
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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31 char output_name[MAXPATHLEN] = "(stdout)";
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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32 char input_name[MAXPATHLEN] = "(stdin)";
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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33
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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34 int r, c;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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35 int i;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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36 int quality = 0;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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37 int seed = 0;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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38 int n = 0;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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39 int method = -1;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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40 int filter = 0;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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41 char filter_name[MAXPATHLEN] = "";
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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42
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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43 char *binstr;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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44
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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45 int level = 0;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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46 double alpha = 0.0;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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47
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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48 int in_rows, in_cols, in_format;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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49 gray in_maxval;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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50 int rows, cols;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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51 int row, col;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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52
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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53 Image_tree dwts, p;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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54
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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55 int verbose = 0;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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56
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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57 progname = argv[0];
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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58
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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59 pgm_init(&argc, argv);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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60 wm_init();
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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61
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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62 while ((c = getopt(argc, argv, "e:f:F:h?l:o:q:s:v:")) != EOF) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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63 switch (c) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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64 case 'e':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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65 method = atoi(optarg);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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66 if (method < 0) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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67 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, method);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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68 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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69 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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70 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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71 case 'f':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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72 filter = atoi(optarg);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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73 if (filter <= 0) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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74 fprintf(stderr, "%s: filter number %d out of range\n", progname, filter);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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75 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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76 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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77 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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78 case 'F':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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79 strcpy(filter_name, optarg);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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80 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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81 case 'h':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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82 case '?':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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83 usage();
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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84 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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85 case 'l':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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86 level = atoi(optarg);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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87 if (level < 1) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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88 fprintf(stderr, "%s: embedding level out of range\n", progname);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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89 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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90 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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91 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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92 case 'o':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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93 if ((out = fopen(optarg, "w")) == NULL) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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94 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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95 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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96 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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97 strcpy(output_name, optarg);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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98 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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99 case 'q':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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100 quality = atoi(optarg);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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101 if (quality < 1) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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102 fprintf(stderr, "%s: quality level %d out of range\n", progname, quality);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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103 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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104 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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105 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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106 case 's':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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107 if ((sig = fopen(optarg, "r")) == NULL) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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108 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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109 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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110 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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111 strcpy(signature_name, optarg);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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112 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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113 case 'v':
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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114 verbose = atoi(optarg);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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115 if (verbose < 0) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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116 fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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117 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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118 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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119 break;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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120 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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121 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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122
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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123 argc -= optind;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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124 argv += optind;
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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125
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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126 if (argc > 1) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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127 usage();
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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128 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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129 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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130
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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131 if (argc == 1 && *argv[0] != '-')
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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132 if ((in = fopen(argv[0], "rb")) == NULL) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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133 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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134 exit(1);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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135 }
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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136 else
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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137 strcpy(input_name, argv[0]);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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138
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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139 if (sig) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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140 char line[32];
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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141 fgets(line, sizeof(line), sig);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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142 if (strspn(line, "KD3SG") >= 5) {
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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143 fscanf(sig, "%d\n", &nbit_signature);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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144 if (quality == 0)
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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145 fscanf(sig, "%d\n", &quality);
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Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
146 else
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
147 fscanf(sig, "%*d\n");
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
148 if (method < 0)
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
149 fscanf(sig, "%d\n", &method);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
150 else
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
151 fscanf(sig, "%*d\n");
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
152 if (filter == 0)
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
153 fscanf(sig, "%d\n", &filter);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
154 else
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
155 fscanf(sig, "%*d\n");
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
156 if (!strcmp(filter_name, ""))
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
157 fscanf(sig, "%[^\n\r]\n", &filter_name);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
158 else
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
159 fscanf(sig, "%*[^\n\r]\n");
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
160 if (level == 0)
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
161 fscanf(sig, "%d\n", &level);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
162 else
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
163 fscanf(sig, "%*d\n");
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
164 fscanf(sig, "%d\n", &seed);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
165 srandom(seed);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
166 nbit_signature2 = nbit_signature;
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
167 n_signature = n_signature2 = NBITSTOBYTES(nbit_signature2);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
168 binstr = malloc((nbit_signature2 + 1) * sizeof(char));
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
169 fscanf(sig, "%[01]\n", binstr);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
170 binstr_to_sig2(binstr);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
171 free(binstr);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
172 init_signature_bits();
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
173 }
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
174 else {
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
175 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
176 exit(1);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
177 }
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
178 fclose(sig);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
179 }
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
180 else {
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
181 fprintf(stderr, "%s: signature file not specified, use -s file option\n", progname);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
182 exit(1);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
183 }
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
184
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
185 pgm_readpgminit(in, &in_cols, &in_rows, &in_maxval, &in_format);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
186
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
187 cols = in_cols;
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
188 rows = in_rows;
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
189
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
190 if (verbose > 0)
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
191 fprintf(stderr, "%s: extracting %d bits with quality %d from\n"
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
192 " %d x %d host image, decomposition level %d\n",
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
193 progname, nbit_signature, quality, cols, rows, level);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
194
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
195 input_image = pgm_allocarray(in_cols, in_rows);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
196
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
197 for (row = 0; row < in_rows; row++)
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
198 pgm_readpgmrow(in, input_image[row], in_cols, in_maxval, in_format);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
199
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
200 fclose(in);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
201
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
202 init_dwt(cols, rows, filter_name, filter, level, method);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
203 /*#ifdef POLLEN_STUFF
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
204 #include "pollen_stuff.c"
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
205 #endif
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
206 #ifdef PARAM_STUFF
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
207 #include "param_stuff.c"
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
208 #endif*/
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
209
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
210 dwts = fdwt(input_image);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
211
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
212 p = dwts;
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
213
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
214 #define STEP 3
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
215
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
216 // consider each resolution level
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
217 while (p->coarse->level < level)
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
218 // descend one level
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
219 p = p->coarse;
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
220
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
221 // start to extracting watermark from beginning at each level
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
222 {
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
223 // get width and height of detail images at current level
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
224 int lwidth = p->vertical->image->width;
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
225 int lheight = p->vertical->image->height;
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
226
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
227 if (verbose > 1)
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
228 fprintf(stderr, "%s: extracting at level %d now, size %d x %d\n",
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
229 progname, p->coarse->level, lwidth, lheight);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
230
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
231 // consider each coefficient at resolution level
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
232 for (row = 0; row < lwidth - STEP; row += STEP)
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
233 for (col = 0; col < lheight - STEP; col += STEP) {
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
234 double h, v, d;
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
235 double *f1 = &h, *f2 = &v, *f3 = &d;
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
236 double delta;
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
237
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
238 // key-dependant coefficient selection
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
239 r = row + 1 + random() % (STEP-2);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
240 c = col + 1 + random() % (STEP-2);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
241
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
242 // get coefficient values, one from each detail image
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
243 h = get_pixel(p->horizontal->image, c, r);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
244 v = get_pixel(p->vertical->image, c, r);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
245 d = get_pixel(p->diagonal->image, c, r);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
246
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
247 // order pointer to coefficient values such that f1 <= f2 <= f3
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
248 #define SWAP(A, B) {double *t = A; A = B; B = t;}
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
249 if (*f1 > *f2) SWAP(f1, f2);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
250 if (*f2 > *f3) SWAP(f2, f3);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
251 if (*f1 > *f2) SWAP(f1, f2);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
252
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
253 // calculate delta, the width of the bins
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
254 delta = (*f3 - *f1) / (double) (2 * quality - 1);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
255
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
256 // set middle coefficient to closest appropriate bin,
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
257 // according to watermark bit
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
258 if (quality == 1)
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
259 set_signature_bit(n, (*f3 - *f2) < (*f2 - *f1));
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
260 else {
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
261 double l = *f1;
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
262 int i = 0;
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
263 while ((l + delta) < *f2) {
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
264 l += delta;
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
265 i++;
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
266 }
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
267 if (i % 2)
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
268 set_signature_bit(n, (l + delta - *f2) > (*f2 - l));
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
269 else
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
270 set_signature_bit(n, (l + delta - *f2) < (*f2 - l));
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
271 }
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
272
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
273 if (verbose > 2)
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
274 fprintf(stderr, "%s: extracted bit #%d (= %d =? %d) at (%d/%d),\n"
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
275 " f1=%lf, f2=%lf, f3=%lf\n", progname, n,
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
276 get_signature_bit(n), get_signature2_bit(n),
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
277 c, r, *f1, *f2, *f3);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
278 n++;
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
279 }
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
280 }
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
281
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
282 fprintf(out, "KD3WM\n");
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
283 fprintf(out, "%d\n", n);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
284 nbit_signature = n;
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
285 binstr = malloc(sizeof(char) * (nbit_signature + 1));
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
286 sig_to_binstr(binstr);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
287 fprintf(out, "%s\n", binstr);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
288 free(binstr);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
289 fclose(out);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
290
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
291 pgm_freearray(input_image, rows);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
292
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
293 exit(0);
acb6967ee76d update to 0.5
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
294 }

Repositories maintained by Peter Meerwald, pmeerw@pmeerw.net.