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1 #include "wm.h"
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2 #include "dwt.h"
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3 #include "coeff.h"
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4 #include "gray.h"
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5 #include "pgm.h"
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6 #include "dwt_util.h"
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7
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8 char *progname;
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9
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10 void usage(void) {
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11 fprintf(stderr, "usage: %s [-e n] [-f n] [-F file] [-h] [-l n] [-o file] [-pP] [-s name,..] -i file file\n\n", progname);
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12 fprintf(stderr, "\t-e n\t\twavelet filtering method (default: 2)\n");
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13 fprintf(stderr, "\t-f n\t\tfilter number (default: 2)\n");
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14 fprintf(stderr, "\t-F file\t\tfilter definition file (default: filter.dat\n");
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15 fprintf(stderr, "\t-h\t\tprint usage\n");
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16 fprintf(stderr, "\t-i file\t\toriginal image file\n");
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17 fprintf(stderr, "\t-l n\t\tmax. decomposition level (default: 0 = max)\n");
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18 fprintf(stderr, "\t-m n\t\tmultiplication factor (default: 0 = auto)\n");
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19 fprintf(stderr, "\t-o file\t\toutput file\n");
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20 fprintf(stderr, "\t-p\t\tprint PSNR, RMS and MSE\n");
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21 fprintf(stderr, "\t-P\t\tonly print PSNR, RMS and MSE, no difference image\n");
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22 fprintf(stderr, "\t-q\t\tprint PSNR, RMS and MSE per subband\n");
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23 fprintf(stderr, "\t-s name,...\tsubband/level (default: all subbands)\n");
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24 fprintf(stderr, "\t-v n\t\tverbosity level\n");
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25 exit(0);
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26 }
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27
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28 void process_subband_var(gray **output, int cols, int rows, Image_tree p, Image_tree q, int type, double min, double max, gray maxval) {
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29 int i;
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30 int col, row, startcol, startrow;
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31
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32 if (!p || !q) return;
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33
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34 calc_subband_location(cols, rows, type, p->level, &startcol, &startrow);
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35
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36 for (row = 0; row < p->image->height; row++)
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37 for (col = 0; col < p->image->width; col++) {
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38 double diff = fabs(get_pixel(p->image, col, row) - get_pixel(q->image, col, row));
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39 output[startrow + row][startcol + col] = PIXELRANGE((double) (diff - min) / (double) (max - min) * maxval);
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40 }
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41 }
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42
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43 void process_subband_fixed(gray **output, int cols, int rows, Image_tree p, Image_tree q, int type, double m) {
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44 int i;
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45 int col, row, startcol, startrow;
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46
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47 if (!p || !q) return;
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48
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49 calc_subband_location(cols, rows, type, p->level, &startcol, &startrow);
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50
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51 for (row = 0; row < p->image->height; row++)
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52 for (col = 0; col < p->image->width; col++) {
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53 double diff = fabs(get_pixel(p->image, col, row) - get_pixel(q->image, col, row));
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54 output[startrow + row][startcol + col] = PIXELRANGE(diff * m);
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55 }
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56 }
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57
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58 void print_subband_psnr(int type, int level, double error, int cols, int rows, double min, double max, FILE *print) {
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59 double mse = error / (double) (cols * rows);
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60 double rmse = sqrt(mse);
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61 double psnr = 20.0 * log(255.0 / rmse) / log(10.0);
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62 int startcol, startrow;
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63
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64 calc_subband_location(cols << level, rows << level, type, level, &startcol, &startrow);
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65 fprintf(print, "%s%d (%d x %d) at %d x %d\n", subband_name(type), level, cols, rows, startcol, startrow);
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66 if (mse > 0.0)
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67 fprintf(print, " PSNR: %lf dB\n", psnr);
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68 else
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69 fprintf(print, " PSNR: inf\n");
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70 fprintf(print, " RMS: %lf\n", rmse);
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71 fprintf(print, " MSE: %lf\n", mse);
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72 fprintf(print, " dmin, dmax: %lf, %lf\n", min, max);
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73 }
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74
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75 int main(int argc, char *argv[]) {
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76 FILE *in = stdin;
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77 FILE *out = stdout;
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78 FILE *orig = NULL;
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79 FILE *print;
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80
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81 gray **input_image;
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82 gray **orig_image;
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83 Image_tree input_dwts, p;
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84 Image_tree orig_dwts, q;
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85 gray **output;
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86
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87 char output_name[MAXPATHLEN] = "(stdout)";
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88 char input_name[MAXPATHLEN] = "(stdin)";
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89 char orig_name[MAXPATHLEN];
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90 char *subband_list = NULL;
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91
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92 int in_cols, in_rows, in_format;
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93 gray in_maxval;
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94 int orig_cols, orig_rows, orig_format;
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95 gray orig_maxval;
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96 int cols, rows, format;
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97 gray maxval;
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98 int col, row;
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99
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100 int no_orig = 0;
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101 int m = 0;
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102 int c;
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103 int maxlevel = 0;
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104
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105 int filter = 1;
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106 int method = 2;
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107 int levels;
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108 char filter_name[MAXPATHLEN] = "filter.dat";
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109
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110 double error = 0.0;
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111 int print_psnr = 0;
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112 int print_psnr_subband = 0;
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113 int print_psnr_only = 0;
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114
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115 double min, max;
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116
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117 int verbose = 0;
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118
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119 progname = argv[0];
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120
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121 pgm_init(&argc, argv); wm_init();
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122
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123 while ((c = getopt(argc, argv, "e:f:F:h?i:l:m:o:pPqs:v:")) != EOF) {
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124 switch (c) {
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125 case 'h':
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126 case '?':
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127 usage();
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128 break;
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129 case 'e':
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130 method = atoi(optarg);
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131 if (method < 0) {
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132 fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, method);
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133 exit(1);
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134 }
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135 break;
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136 case 'f':
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137 filter = atoi(optarg);
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138 if (filter <= 0) {
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139 fprintf(stderr, "%s: filter number %d out of range\n", progname, filter);
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140 exit(1);
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141 }
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142 break;
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143 case 'F':
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144 strcpy(filter_name, optarg);
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145 break;
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146 case 'i':
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147 if (!strcmp(optarg, "-")) {
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148 no_orig = 1;
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149 strcpy(orig_name, "(zero)");
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150 }
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151 else {
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152 if ((orig = fopen(optarg, "rb")) == NULL) {
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153 fprintf(stderr, "%s: unable to open original image file %s\n", progname, optarg);
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154 exit(1);
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155 }
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156 strcpy(orig_name, optarg);
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157 }
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158 break;
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159 case 'l':
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160 maxlevel = atoi(optarg);
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161 if (maxlevel < 0) {
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162 fprintf(stderr, "%s: decomposition level %d out of range\n", progname, maxlevel);
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163 exit(1);
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164 }
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165 break;
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166 case 'm':
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167 m = atoi(optarg);
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168 if (m < -1) {
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169 fprintf(stderr, "%s: multiplication factor %d out of range\n", progname, m);
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170 exit(1);
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171 }
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172 break;
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173 case 'o':
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174 if ((out = fopen(optarg, "wb")) == NULL) {
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175 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg);
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176 exit(1);
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177 }
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178 strcpy(output_name, optarg);
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179 break;
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180 case 'p':
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181 print_psnr = 1;
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182 break;
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183 case 'P':
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184 print_psnr_only = 1;
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185 break;
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186 case 'q':
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187 print_psnr = 1;
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188 print_psnr_subband = 1;
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189 case 's':
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190 subband_list = optarg;
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191 break;
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192 case 'v':
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193 verbose = atoi(optarg);
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194 if (verbose < 0) {
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195 fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose);
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196 exit(1);
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197 }
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198 break;
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199
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200 }
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201 }
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202
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203 argc -= optind;
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204 argv += optind;
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205
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206 if (argc > 1) {
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207 usage();
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208 exit(1);
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209 }
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210
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211 print = print_psnr_only ? out : stderr;
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212
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213 if (argc == 1 && *argv[0] != '-')
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214 if ((in = fopen(argv[0], "rb")) == NULL) {
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215 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]);
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216 exit(1);
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217 }
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218 else
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219 strcpy(input_name, argv[0]);
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220
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221 if (!orig && !no_orig) {
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222 fprintf(stderr, "%s: original image file not specified, using zero image\n", progname);
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223 strcpy(orig_name, "(zero)");
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224 no_orig = 1;
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225 }
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226
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227 pgm_readpgminit(in, &in_cols, &in_rows, &in_maxval, &in_format);
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228
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229 if (!no_orig) {
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230 pgm_readpgminit(orig, &orig_cols, &orig_rows, &orig_maxval, &orig_format);
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231 if (in_cols != orig_cols || in_rows != orig_rows) {
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232 fprintf(stderr, "%s: input image %s does not match dimensions of original image %s\n", progname, input_name, orig_name);
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233 exit(1);
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234 }
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235 }
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236
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237 cols = in_cols;
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238 rows = in_rows;
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239 format = in_format;
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240 maxval = in_maxval;
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241
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242 input_image = pgm_allocarray(cols, rows);
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243 orig_image = pgm_allocarray(cols, rows);
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244
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245 output = alloc_grays(cols, rows);
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246
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247 if (no_orig) {
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248 for (row = 0; row < rows; row++) {
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249 pgm_readpgmrow(in, input_image[row], cols, maxval, format);
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250 bzero(orig_image[row], sizeof(gray) * cols);
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251 }
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252 }
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253 else {
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254 for (row = 0; row < rows; row++) {
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255 pgm_readpgmrow(in, input_image[row], in_cols, in_maxval, in_format);
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256 pgm_readpgmrow(orig, orig_image[row], orig_cols, orig_maxval, orig_format);
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257 }
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258 }
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259
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260 fclose(in);
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261 if (!no_orig)
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262 fclose(orig);
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263
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264 // complete decomposition
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265 levels = find_deepest_level(cols, rows) - 1;
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266 if (!maxlevel) maxlevel = levels;
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267 if (maxlevel > levels) {
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268 fprintf(stderr, "%s: decomposition level %d not possible (max. %d), image size is %d x %d\n", progname, maxlevel, levels, cols, rows);
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269 exit(1);
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270 }
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271
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272 init_dwt(cols, rows, filter_name, filter, maxlevel, method);
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273
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274 input_dwts = fdwt(input_image);
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275 orig_dwts = fdwt(orig_image);
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276
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277 p = input_dwts;
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278 q = orig_dwts;
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279 min = 10000000.0;
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280 max = 0.0;
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281 error = 0.0;
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282 while (p->coarse && q->coarse) {
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283 double localmin, localmax, localerror;
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284
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285 if (subband_in_list(subband_list, HORIZONTAL, p->horizontal->level)) {
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286 calc_subband(p->horizontal, q->horizontal, HORIZONTAL, &localmin, &localmax, &localerror);
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287 if (m == -1) process_subband_var(output, cols, rows, p->horizontal, q->horizontal, HORIZONTAL, localmin, localmax, maxval);
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288 if (localmin < min) min = localmin;
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289 if (localmax > max) max = localmax;
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290 error += localerror;
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291 if (print_psnr_subband)
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292 print_subband_psnr(HORIZONTAL, p->horizontal->level, error, p->horizontal->image->width, p->horizontal->image->height, localmin, localmax, print);
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293 }
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294 else if (verbose > 5)
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295 fprintf(stderr, "%s: subband %s%d skipped\n", progname, subband_name(HORIZONTAL), p->horizontal->level);
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296
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297 if (subband_in_list(subband_list, VERTICAL, p->vertical->level)) {
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298 calc_subband(p->vertical, q->vertical, VERTICAL, &localmin, &localmax, &localerror);
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299 if (m == -1) process_subband_var(output, cols, rows, p->vertical, q->vertical, VERTICAL, localmin, localmax, maxval);
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300 if (localmin < min) min = localmin;
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301 if (localmax > max) max = localmax;
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302 error += localerror;
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303 if (print_psnr_subband)
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304 print_subband_psnr(VERTICAL, p->vertical->level, error, p->vertical->image->width, p->vertical->image->height, localmin, localmax, print);
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305 }
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306 else if (verbose > 5)
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307 fprintf(stderr, "%s: subband %s%d skipped\n", progname, subband_name(VERTICAL), p->vertical->level);
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308
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309 if (subband_in_list(subband_list, DIAGONAL, p->diagonal->level)) {
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310 calc_subband(p->diagonal, q->diagonal, DIAGONAL, &localmin, &localmax, &localerror);
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311 if (m == -1) process_subband_var(output, cols, rows, p->diagonal, q->diagonal, DIAGONAL, localmin, localmax, maxval);
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312 if (localmin < min) min = localmin;
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313 if (localmax > max) max = localmax;
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314 error += localerror;
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315 if (print_psnr_subband)
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316 print_subband_psnr(DIAGONAL, p->vertical->level, error, p->diagonal->image->width, p->diagonal->image->height, localmin, localmax, print);
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317 }
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318 else if (verbose > 5)
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319 fprintf(stderr, "%s: subband %s%d skipped\n", progname, subband_name(DIAGONAL), p->diagonal->level);
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320
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321 p = p->coarse;
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322 q = q->coarse;
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323
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324 if (!p->coarse) {
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325 if (subband_in_list(subband_list, COARSE, p->level)) {
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326 calc_subband(p, q, COARSE, &localmin, &localmax, &localerror);
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327 if (m == -1) process_subband_var(output, cols, rows, p, q, COARSE, localmin, localmax, maxval);
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328 if (localmin < min) min = localmin;
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329 if (localmax > max) max = localmax;
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330 error += localerror;
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331 if (print_psnr_subband)
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332 print_subband_psnr(COARSE, p->level, error, p->image->width, p->image->height, localmin, localmax, print);
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333 }
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334 else if (verbose > 5)
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335 fprintf(stderr, "%s: subband %s%d skipped\n", progname, subband_name(COARSE), p->level);
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336 }
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337 }
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338
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339 p = input_dwts;
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340 q = orig_dwts;
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341 while (p->coarse && q->coarse) {
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342 if (m > 0) {
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343 process_subband_fixed(output, cols, rows, p->horizontal, q->horizontal, HORIZONTAL, m);
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344 process_subband_fixed(output, cols, rows, p->vertical, q->vertical, VERTICAL, m);
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345 process_subband_fixed(output, cols, rows, p->diagonal, q->diagonal, DIAGONAL, m);
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346 }
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347 else if (m == 0) {
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348 process_subband_var(output, cols, rows, p->horizontal, q->horizontal, HORIZONTAL, min, max, maxval);
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349 process_subband_var(output, cols, rows, p->vertical, q->vertical, VERTICAL, min, max, maxval);
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350 process_subband_var(output, cols, rows, p->diagonal, q->diagonal, DIAGONAL, min, max, maxval);
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351 }
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352
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353 p = p->coarse;
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354 q = q->coarse;
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355
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356 if (!p->coarse) {
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357 if (m > 0)
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358 process_subband_fixed(output, cols, rows, p, q, COARSE, m);
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359 else if (m == 0)
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360 process_subband_var(output, cols, rows, p, q, COARSE, min, max, maxval);
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361 }
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362 }
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363
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364 if (!print_psnr_only) {
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365 pgm_writepgminit(out, cols, rows, maxval, 0);
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366 for (row = 0; row < rows; row++)
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367 pgm_writepgmrow(out, output[row], cols, maxval, 0);
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368
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369 fclose(out);
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370 }
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371
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372 pgm_freearray(input_image, rows);
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373 pgm_freearray(orig_image, rows);
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374 free_grays(output);
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375
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376 if (print_psnr || print_psnr_only) {
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377 double mse = error / (double) (cols * rows);
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378 double rmse = sqrt(mse);
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379 double psnr = 20.0 * log(255.0 / rmse) / log(10.0);
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380 if (mse > 0.0)
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381 fprintf(print, "PSNR: %lf dB\n", psnr);
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382 else
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383 fprintf(print, "PSNR: inf\n");
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384 fprintf(print, "RMS: %lf\n", rmse);
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385 fprintf(print, "MSE: %lf\n", mse);
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386 fprintf(print, "dmin, dmax: %lf, %lf\n", min, max);
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387 }
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388
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389 exit(0);
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390 }
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