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0
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1 #include "wm.h"
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2 #include "dwt.h"
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3 #include "dwt_util.h"
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4 #include "pgm.h"
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5
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6 char *progname;
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7
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8 void usage(void) {
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9 fprintf(stderr, "usage: %s [-a n] [-e n] [-f n] [-F file] [-h] [-l n] [-n n] [-o file] [-v n] [-t n] -s file file\n\n", progname);
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10 fprintf(stderr, "\t-a n\t\talpha factor\n");
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11 fprintf(stderr, "\t-e n\t\twavelet filtering method\n");
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12 fprintf(stderr, "\t-f n\t\tfilter number\n");
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13 fprintf(stderr, "\t-F file\t\tfilter definition file\n");
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14 fprintf(stderr, "\t-h\t\tprint usage\n");
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15 fprintf(stderr, "\t-l n\t\tdecomposition levels\n");
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16 fprintf(stderr, "\t-n n\t\twatermark length\n");
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17 fprintf(stderr, "\t-o file\t\tfile for extracted watermark\n");
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18 fprintf(stderr, "\t-s file\t\toriginal signature file\n");
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19 fprintf(stderr, "\t-t n\t\tdetection threshold\n");
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20 fprintf(stderr, "\t-v n\t\tverbosity level\n");
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21 exit(0);
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22 }
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23
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24 void wm_subband(Image s, double *w, int n, double t2, int *m, double *z, double *v) {
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25 int i;
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26
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27 *m = 0;
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28 *z = 0.0;
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29 *v = 0.0;
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30 for (i = 0; i < s->width * s->height; i++)
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31 if (s->data[i] > t2) {
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32 (*z) += (s->data[i] * w[i % n]);
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33 (*v) += fabs(s->data[i]);
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34 (*m)++;
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35 }
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36 }
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37
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38 int main(int argc, char *argv[]) {
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39
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40 FILE *in = stdin;
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41 FILE *out = stdout;
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42 FILE *sig = NULL;
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43
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44 gray **input_image;
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45
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46 char signature_name[MAXPATHLEN];
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47 char output_name[MAXPATHLEN] = "(stdout)";
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48 char input_name[MAXPATHLEN] = "(stdin)";
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49
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8
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50 int c;
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0
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51 int i;
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52 int n = 0;
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53 int method = -1;
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3
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54 int level = 0;
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0
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55 int filter = 0;
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56 char filter_name[MAXPATHLEN] = "";
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57
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58 double alpha = 0.0;
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59 double t2 = 0.0;
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60
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61 int in_rows, in_cols, in_format;
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62 gray in_maxval;
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63 int rows, cols;
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8
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64 int row;
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0
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65
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66 double *watermark;
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67
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68 Image_tree dwts, s;
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69
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70 int verbose = 0;
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71
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72 progname = argv[0];
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73
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74 pgm_init(&argc, argv); wm_init2();
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75
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76 while ((c = getopt(argc, argv, "a:e:f:F:h?l:n:o:s:v:t")) != EOF) {
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77 switch (c) {
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78 case 'a':
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79 alpha = atof(optarg);
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80 if (alpha <= 0.0) {
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81 fprintf(stderr, "%s: alpha factor %f out of range\n", progname, alpha);
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82 exit(1);
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83 }
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84 break;
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85 case 'e':
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86 method = atoi(optarg);
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87 if (method < 0) {
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88 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, method);
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89 exit(1);
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90 }
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91 break;
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92 case 'f':
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93 filter = atoi(optarg);
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94 if (filter <= 0) {
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95 fprintf(stderr, "%s: filter number %d out of range\n", progname, filter);
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96 exit(1);
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97 }
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98 break;
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99 case 'F':
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100 strcpy(filter_name, optarg);
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101 break;
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102 case 'h':
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103 case '?':
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104 usage();
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105 break;
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106 case 'l':
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3
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107 level = atoi(optarg);
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108 if (level <= 0) {
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8
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109 fprintf(stderr, "%s: decomposition level %d out of range\n", progname, level);
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0
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110 exit(1);
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111 }
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112 break;
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113
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114 case 'n':
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115 n = atoi(optarg);
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116 if (n < 1 || n > 32000) {
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117 fprintf(stderr, "%s: watermark length %d out of range\n", progname, n);
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118 exit(1);
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119 }
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120 break;
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121 case 'o':
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122 if ((out = fopen(optarg, "w")) == NULL) {
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123 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg);
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124 exit(1);
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125 }
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126 strcpy(output_name, optarg);
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127 break;
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128 case 's':
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129 if ((sig = fopen(optarg, "r")) == NULL) {
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130 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg);
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131 exit(1);
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132 }
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133 strcpy(signature_name, optarg);
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134 break;
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135 case 't':
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136 t2 = atof(optarg);
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137 if (t2 <= 0.0) {
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138 fprintf(stderr, "%s: detection threshold %f out of range\n", progname, t2);
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139 exit(1);
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140 }
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141 break;
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142 case 'v':
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143 verbose = atoi(optarg);
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144 if (verbose < 0) {
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145 fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose);
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146 exit(1);
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147 }
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148 break;
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149 }
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150 }
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151
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152 argc -= optind;
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153 argv += optind;
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154
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155 if (argc > 1) {
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156 usage();
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157 exit(1);
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158 }
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159
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8
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160 if (argc == 1 && *argv[0] != '-') {
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0
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161 if ((in = fopen(argv[0], "rb")) == NULL) {
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162 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]);
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163 exit(1);
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164 }
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165 else
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166 strcpy(input_name, argv[0]);
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8
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167 }
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168
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0
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169 if (sig) {
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170 char line[32];
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171 fgets(line, sizeof(line), sig);
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172 if (strspn(line, "DGSG") >= 4) {
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173 fscanf(sig, "%d\n", &n);
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3
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174 if (level == 0)
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175 fscanf(sig, "%d\n", &level);
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0
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176 else
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177 fscanf(sig, "%*d\n");
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178 if (alpha == 0.0)
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179 fscanf(sig, "%lf\n", &alpha);
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180 else
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181 fscanf(sig, "%*lf\n");
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182 fscanf(sig, "%*lf\n");
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183 if (t2 == 0.0)
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184 fscanf(sig, "%lf\n", &t2);
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185 else
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186 fscanf(sig, "%*lf\n");
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187 if (method < 0)
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188 fscanf(sig, "%d\n", &method);
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189 else
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190 fscanf(sig, "%*d\n");
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191 if (filter == 0)
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192 fscanf(sig, "%d\n", &filter);
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193 else
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194 fscanf(sig, "%*d\n");
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195 if (!strcmp(filter_name, ""))
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15
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196 fscanf(sig, "%[^\n\r]\n", filter_name);
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0
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197 else
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198 fscanf(sig, "%*[^\n\r]\n");
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199 }
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200 else {
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201 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name);
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202 exit(1);
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203 }
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204 }
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205 else {
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206 fprintf(stderr, "%s: signature file not specified, use -s file option\n", progname);
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207 exit(1);
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208 }
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209
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210 watermark = malloc(n * sizeof(double));
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211 for (i = 0; i < n; i++)
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212 fscanf(sig, "%lf\n", &watermark[i]);
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213 fclose(sig);
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214
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215 pgm_readpgminit(in, &in_cols, &in_rows, &in_maxval, &in_format);
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216
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217 cols = in_cols;
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218 rows = in_rows;
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219
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220 input_image = pgm_allocarray(in_cols, in_rows);
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221
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222 for (row = 0; row < in_rows; row++) {
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223 pgm_readpgmrow(in, input_image[row], in_cols, in_maxval, in_format);
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224 }
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225
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226 fclose(in);
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227
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3
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228 init_dwt(cols, rows, filter_name, filter, level, method);
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0
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229 #ifdef POLLEN_STUFF
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3
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230 #include "pollen_stuff.c"
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0
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231 #endif
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232 #ifdef PARAM_STUFF
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3
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233 #include "param_stuff.c"
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0
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234 #endif
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235
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236 dwts = fdwt(input_image);
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237
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238 fprintf(out, "DGWM\n");
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3
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239 fprintf(out, "%d\n", level);
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0
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240 fprintf(out, "%f\n", alpha);
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241
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3
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242 for (i = 0, s = dwts; i < level; i++, s = s->coarse) {
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0
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243 int m;
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244 double z, v;
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245
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246 wm_subband(s->horizontal->image, watermark, n, t2, &m, &z, &v);
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247 fprintf(out, "%d %f %f\n", m, z, v);
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248 wm_subband(s->vertical->image, watermark, n, t2, &m, &z, &v);
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249 fprintf(out, "%d %f %f\n", m, z, v);
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250 wm_subband(s->diagonal->image, watermark, n, t2, &m, &z, &v);
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251 fprintf(out, "%d %f %f\n", m, z, v);
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252 }
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253
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254 fclose(out);
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255
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256 free(watermark);
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257
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258 pgm_freearray(input_image, rows);
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259
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260 exit(0);
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261 }
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