annotate Meerwald/wm_kim_e.c @ 0:be303a3f5ea8

import
author Peter Meerwald <pmeerw@cosy.sbg.ac.at>
date Sun, 12 Aug 2007 13:14:34 +0200
parents
children acb6967ee76d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
1 #include "wm.h"
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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2 #include "dwt.h"
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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3 #include "pgm.h"
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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4 #include "dwt_util.h"
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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5 #include "kim_common.h"
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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6
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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7 char *progname;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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8
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
9 void usage(void) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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10 fprintf(stderr, "usage: %s [-a n] [-A n] [-e n] [-f n] [-F n] [-h] [-l n] [-o file] [-v n] -s file file\n\n", progname);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
11 fprintf(stderr, "\t-a n\t\talpha factor/embedding strength for detail subbands\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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12 fprintf(stderr, "\t-a n\t\talpha factor/embedding strength for approximation subband\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
13 fprintf(stderr, "\t-e n\t\twavelet filtering method\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
14 fprintf(stderr, "\t-f n\t\tfilter number\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
15 fprintf(stderr, "\t-F file\t\tfilter definition file\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
16 fprintf(stderr, "\t-h\t\tprint usage\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
17 fprintf(stderr, "\t-l n\t\tdecomposition level\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
18 fprintf(stderr, "\t-o file\t\toutput (watermarked) file\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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19 fprintf(stderr, "\t-s file\t\tsignature to embed in input image\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
20 fprintf(stderr, "\t-v n\t\tverbosity level\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
21 exit(0);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
22 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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23
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
24 int mark_subband(Image_tree s, int name, double alpha, double watermark[], double threshold, int w, int n, int verbose) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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25 int i, j;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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26
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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27 for (i = 5; i < s->image->height-5; i++)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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28 for (j = 5; j < s->image->width-5; j++) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
29 double coeff, newcoeff;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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30
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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31 coeff = get_pixel(s->image, i, j);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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32 if (fabs(coeff) > threshold) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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33 newcoeff = coeff + alpha * coeff * watermark[w % n];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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34 set_pixel(s->image, i, j, newcoeff);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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35
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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36 if (verbose >= 9)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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37 fprintf(stderr, "%s: (%d/%d) %f: %f -> %f\n", progname, j, i, watermark[w % n], coeff, newcoeff);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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38
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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39 w++;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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40 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
41 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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42
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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43 if (verbose > 5)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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44 fprintf(stderr, "%s: watermarking %s%d, size %d x %d; embedded %d coeffs. total\n",
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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45 progname, subband_name(name), s->level, s->image->width, s->image->height, w);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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46
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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47 return w;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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48 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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49
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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50 int main(int argc, char *argv[]) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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51
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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52 FILE *in = stdin;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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53 FILE *out = stdout;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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54 FILE *sig = NULL;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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55
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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56 char output_name[MAXPATHLEN] = "(stdout)";
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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57 char input_name[MAXPATHLEN] = "(stdin)";
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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58 char signature_name[MAXPATHLEN];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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59
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
60 int i, c, w;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
61 int row, col;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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62
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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63 int n;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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64
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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65 double alpha_detail = 0.0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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66 double alpha_approx = 0.0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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67 int level = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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68
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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69 int filter = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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70 int method = -1;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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71 int levels;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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72 char filter_name[MAXPATHLEN] = "";
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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73
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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74 int verbose = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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75
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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76 gray **image;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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77 Image_tree p, dwts;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
78
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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79 gray maxval;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
80 int rows, cols, colors, format;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
81
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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82 double *watermark;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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83
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
84 progname = argv[0];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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85
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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86 pgm_init(&argc, argv); wm_init();
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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87
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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88 while ((c = getopt(argc, argv, "a:A:e:f:F:h?o:l:s:v:")) != EOF) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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89 switch (c) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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90 case 'a':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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91 alpha_detail = atof(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
92 if (alpha_detail <= 0.0) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
93 fprintf(stderr, "%s: alpha factor %f out of range\n", progname, alpha_detail);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
94 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
95 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
96 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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97 case 'A':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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98 alpha_approx = atof(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
99 if (alpha_approx <= 0.0) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
100 fprintf(stderr, "%s: alpha factor %f out of range\n", progname, alpha_approx);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
101 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
102 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
103 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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104 case 'l':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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105 level = atoi(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
106 if (level <= 0) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
107 fprintf(stderr, "%s: decomposition level %d out of range\n", progname, level);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
108 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
109 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
110 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
111 case 'e':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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112 method = atoi(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
113 if (method < 0) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
114 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, method);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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115 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
116 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
117 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
118 case 'f':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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119 filter = atoi(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
120 if (filter <= 0) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
121 fprintf(stderr, "%s: filter number %d out of range\n", progname, filter);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
122 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
123 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
124 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
125 case 'F':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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126 strcpy(filter_name, optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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127 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
128 case 'h':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
129 case '?':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
130 usage();
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
131 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
132 case 'o':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
133 if ((out = fopen(optarg, "wb")) == NULL) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
134 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
135 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
136 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
137 strcpy(output_name, optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
138 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
139 case 's':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
140 if ((sig = fopen(optarg, "r")) == NULL) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
141 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
142 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
143 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
144 strcpy(signature_name, optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
145 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
146 case 'v':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
147 verbose = atoi(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
148 if (verbose < 0) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
149 fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
150 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
151 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
152 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
153 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
154 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
155
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
156 argc -= optind;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
157 argv += optind;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
158
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
159 if (argc > 1) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
160 usage();
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
161 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
162 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
163
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
164 if (argc == 1 && *argv[0] != '-')
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
165 if ((in = fopen(argv[0], "rb")) == NULL) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
166 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
167 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
168 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
169 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
170 strcpy(input_name, argv[0]);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
171
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
172 if (sig) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
173 char line[32];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
174 fgets(line, sizeof(line), sig);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
175 if (strspn(line, "KISG") >= 4) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
176 fscanf(sig, "%d\n", &n);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
177 if (alpha_detail == 0.0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
178 fscanf(sig, "%lf\n", &alpha_detail);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
179 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
180 fscanf(sig, "%*lf\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
181 if (alpha_approx == 0.0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
182 fscanf(sig, "%lf\n", &alpha_approx);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
183 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
184 fscanf(sig, "%*lf\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
185 if (level == 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
186 fscanf(sig, "%d\n", &level);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
187 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
188 fscanf(sig, "%*d\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
189 if (method < 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
190 fscanf(sig, "%d\n", &method);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
191 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
192 fscanf(sig, "%*d\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
193 if (filter == 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
194 fscanf(sig, "%d\n", &filter);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
195 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
196 fscanf(sig, "%*d\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
197 if (!strcmp(filter_name, ""))
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
198 fscanf(sig, "%[^\n\r]\n", &filter_name);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
199 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
200 fscanf(sig, "%*[^\n\r]\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
201 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
202 else {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
203 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
204 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
205 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
206 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
207 else {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
208 fprintf(stderr, "%s: signature file not specified, use -s file option\n", progname);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
209 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
210 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
211
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
212 watermark = malloc(n * sizeof(double));
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
213 for (i = 0; i < n; i++)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
214 fscanf(sig, "%lf\n", &watermark[i]);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
215 fclose(sig);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
216
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
217 pgm_readpgminit(in, &cols, &rows, &maxval, &format);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
218 image = pgm_allocarray(cols, rows);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
219 for (row = 0; row < rows; row++)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
220 pgm_readpgmrow(in, image[row], cols, maxval, format);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
221 fclose(in);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
222
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
223 // complete decomposition
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
224 levels = find_deepest_level(cols, rows) - 1;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
225 if (level > levels) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
226 fprintf(stderr, "%s: decomposition level %d not possible (max. %d), image size is %d x %d\n", progname, level, levels, cols, rows);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
227 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
228 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
229
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
230 // wavelet transform
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
231 init_dwt(cols, rows, filter_name, filter, level, method);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
232 #ifdef POLLEN_STUFF
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
233 #include "pollen_stuff.xxx"
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
234 #endif
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
235 #ifdef PARAM_STUFF
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
236 #include "param_stuff.xxx"
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
237 #endif
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
238
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
239 dwts = fdwt(image);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
240
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
241 p = dwts;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
242 w = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
243
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
244 // process each decomposition level
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
245 while (p->coarse) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
246 int current_level;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
247 double threshold;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
248 double max_coeff;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
249 double alpha;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
250
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
251 // get current decomposition level number
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
252 current_level = p->horizontal->level;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
253
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
254 // find largest absolute coefficient in detail subbands of current decomposition level
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
255 max_coeff = find_level_largest_coeff(p, verbose);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
256
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
257 // calculate significance threshold for current decomposition level
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
258 threshold = calc_level_threshold(max_coeff, verbose);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
259
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
260 // calculate embedding strength alpha for current decomposition level
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
261 alpha = calc_level_alpha_detail(alpha_detail, level, current_level, verbose);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
262
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
263 if (verbose > 1)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
264 fprintf(stderr, "%s: level %d, threshold %f, alpha %f\n", progname, current_level, threshold, alpha);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
265
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
266 // embed watermark sequence into detail subbands of current decomposition level
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
267 w = mark_subband(p->horizontal, HORIZONTAL, alpha, watermark, threshold, w, n, verbose);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
268 w = mark_subband(p->vertical, VERTICAL, alpha, watermark, threshold, w, n, verbose);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
269 w = mark_subband(p->diagonal, DIAGONAL, alpha, watermark, threshold, w, n, verbose);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
270
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
271 p = p->coarse;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
272 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
273
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
274 // mark approximation image using calculated significance threshold and embedding strength
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
275 w = mark_subband(p, COARSE, alpha_approx, watermark, calc_level_threshold(find_subband_largest_coeff(p, COARSE, verbose), verbose), w, n, verbose);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
276
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
277 free(watermark);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
278 idwt(dwts, image);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
279
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
280 pgm_writepgminit(out, cols, rows, maxval, 0);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
281 for (row = 0; row < rows; row++)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
282 pgm_writepgmrow(out, image[row], cols, maxval, 0);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
283 fclose(out);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
284
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
285 pgm_freearray(image, rows);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
286
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
287 exit(0);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
288 }

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