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1 #include "wm.h"
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2 #include "signature.h"
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3 #include "wm_dwt.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 [-e n] [-f n] [-F n] [-h] [-o file] [-q n] [-v n] -s file file\n\n", progname);
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10 fprintf(stderr, "\t-e n\t\twavelet filtering method\n");
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11 fprintf(stderr, "\t-f n\t\tfilter number\n");
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12 fprintf(stderr, "\t-F file\t\tfilter definition file\n");
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13 fprintf(stderr, "\t-h\t\tprint usage\n");
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14 fprintf(stderr, "\t-o file\t\toutput (watermarked) file\n");
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15 fprintf(stderr, "\t-q n\t\tquantization/quality factor\n");
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16 fprintf(stderr, "\t-s file\t\tsignature to embed in input image\n");
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17 fprintf(stderr, "\t-v n\t\tverbosity level\n");
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18 exit(0);
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19 }
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20
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21 int main(int argc, char *argv[]) {
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22
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23 FILE *in = stdin;
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24 FILE *out = stdout;
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25 FILE *sig = NULL;
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26
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27 char output_name[MAXPATHLEN] = "(stdout)";
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28 char input_name[MAXPATHLEN] = "(stdin)";
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29 char signature_name[MAXPATHLEN];
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30
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31 int c;
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32 int row, col;
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33
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34 int n;
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35
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36 double quality = 0.0;
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37
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38 int filter = 0;
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39 int method = -1;
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40 int level = 0;
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41 char filter_name[MAXPATHLEN] = "";
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42
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43 int seed;
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44 int verbose = 0;
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45
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46 gray **image;
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47 Image_tree dwts;
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48
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49 gray maxval;
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50 int rows, cols, colors, format;
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51
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52 progname = argv[0];
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53
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54 pgm_init(&argc, argv);
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55
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56 #ifdef __EMX__
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57 _fsetmode(in, "b");
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58 _fsetmode(out, "b");
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59 #endif
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60
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61 while ((c = getopt(argc, argv, "e:f:F:h?l:o:q:s:v:")) != EOF) {
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62 switch (c) {
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63 case 'e':
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64 method = atoi(optarg);
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65 if (method < 0) {
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66 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, method);
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67 exit(1);
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68 }
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69 break;
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70 case 'f':
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71 filter = atoi(optarg);
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72 if (filter <= 0) {
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73 fprintf(stderr, "%s: filter number %d out of range\n", progname, filter);
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74 exit(1);
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75 }
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76 break;
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77 case 'F':
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78 strcpy(filter_name, optarg);
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79 break;
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80 case 'h':
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81 case '?':
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82 usage();
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83 break;
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84 case 'l':
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85 level = atoi(optarg);
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86 if (level < 1) {
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87 fprintf(stderr, "%s: embedding level out of range\n", progname);
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88 exit(1);
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89 }
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90 break;
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91 case 'o':
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92 if ((out = fopen(optarg, "wb")) == NULL) {
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93 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg);
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94 exit(1);
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95 }
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96 strcpy(output_name, optarg);
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97 break;
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98 case 'q':
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99 quality = atoi(optarg);
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100 if (quality <= 0) {
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101 fprintf(stderr, "%s: quality factor %d out of range\n", progname, quality);
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102 exit(1);
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103 }
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104 break;
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105 case 's':
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106 if ((sig = fopen(optarg, "r")) == NULL) {
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107 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg);
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108 exit(1);
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109 }
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110 strcpy(signature_name, optarg);
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111 break;
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112 case 'v':
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113 verbose = atoi(optarg);
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114 if (verbose < 0) {
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115 fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose);
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116 exit(1);
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117 }
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118 break;
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119 }
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120 }
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121
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122 argc -= optind;
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123 argv += optind;
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124
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125 if (argc > 1) {
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126 usage();
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127 exit(1);
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128 }
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129
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130 if (argc == 1 && *argv[0] != '-')
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131 if ((in = fopen(argv[0], "rb")) == NULL) {
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132 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]);
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133 exit(1);
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134 }
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135 else
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136 strcpy(input_name, argv[0]);
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137
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138 if (sig) {
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139 char line[32];
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140 fgets(line, sizeof(line), sig);
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141 if (strspn(line, "KDSG") >= 4) {
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142 fscanf(sig, "%d\n", &n);
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143 if (quality == 0.0)
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144 fscanf(sig, "%lf\n", &quality);
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145 else
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146 fscanf(sig, "%*lf\n");
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147 if (method < 0)
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148 fscanf(sig, "%d\n", &method);
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149 else
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150 fscanf(sig, "%*d\n");
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151 if (filter == 0)
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152 fscanf(sig, "%d\n", &filter);
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153 else
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154 fscanf(sig, "%*d\n");
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155 if (!strcmp(filter_name, ""))
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156 fscanf(sig, "%[^\n\r]\n", &filter_name);
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157 else
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158 fscanf(sig, "%*[^\n\r]\n");
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159 if (level == 0)
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160 fscanf(sig, "%d\n", &level);
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161 else
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162 fscanf(sig, "%*d\n");
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163 fscanf(sig, "%d\n", &seed);
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164 srandom(seed);
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165 n_signature = NBITSTOBYTES(nbit_signature);
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166 fread(signature, sizeof(char), n_signature, sig);
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167 fscanf(sig, "\n");
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168 }
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169 else {
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170 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name);
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171 exit(1);
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172 }
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173 fclose(sig);
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174 }
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175 else {
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176 fprintf(stderr, "%s: signature file not specified, use -s file option\n", progname);
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177 exit(1);
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178 }
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179
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180 pgm_readpgminit(in, &cols, &rows, &maxval, &format);
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181
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182 image = pgm_allocarray(cols, rows);
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183
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184 for (row = 0; row < rows; row++)
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185 pgm_readpgmrow(in, image[row], cols, maxval, format);
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186
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187 fclose(in);
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188
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189 // check watermark dimensions and decomposition level
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190
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191
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192 // decomposition of image
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193 init_dwt(cols, rows, filter_name, filter, level, method);
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194 #ifdef POLLEN_STUFF
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195 {
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196 double alpha, beta;
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197 char *alpha_str = getenv("POLLEN_ALPHA"), *beta_str = getenv("POLLEN_BETA");
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198
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199 if (alpha_str && beta_str) {
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200 alpha = atof(alpha_str);
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201 beta = atof(beta_str);
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202
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203 if (alpha < -M_PI || alpha >= M_PI) {
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204 fprintf(stderr, "%s: pollen - alpha %f out of range\n", progname, alpha);
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205 exit(1);
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206 }
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207
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208 if (beta < -M_PI || beta >= M_PI) {
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209 fprintf(stderr, "%s: pollen - beta %f out of range\n", progname, beta);
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210 exit(1);
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211 }
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212
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213 if (verbose > 7)
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214 fprintf(stderr, "%s: pollen - alpha %f, beta %f\n", progname, alpha, beta);
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215
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216 dwt_pollen_filter(alpha, beta);
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217 }
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218 }
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219 #endif
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220
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221 dwts = fdwt(image);
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222
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223 // create 'image' from binary watermark
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224
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225 // decomposition of watermark
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226 init_dwt(cols, rows, filter_name, filter, 1, method);
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227 // dwts = fdwt(watermark);
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228
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229 // calculate mean value of image and set alpha
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230
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231 // setup of contrast sensitivity matrix
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232
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233 // segment detail images at each level
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234
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235 // calculate DFT of each segment
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236
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237 // compute salience for each segment
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238
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239 // calculate gamma or each detail image
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240
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241 // embed watermark
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242
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243 // reconstruction of watermarked image
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244
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245 idwt(dwts, image);
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246
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247 pgm_writepgminit(out, cols, rows, maxval, 0);
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248
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249 for (row = 0; row < rows; row++)
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250 pgm_writepgmrow(out, image[row], cols, maxval, 0);
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251
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252 fclose(out);
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253
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254 pgm_freearray(image, rows);
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255
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256 exit(0);
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257 }
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