annotate Meerwald/wm_bruyn_d.c @ 15:ad1d224896c5

fix scanf() warning
author Peter Meerwald <pmeerw@cosy.sbg.ac.at>
date Mon, 30 Jun 2008 20:59:01 +0200
parents f83ef905a63d
children 4987db85cfae
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:
diff changeset
2 #include "signature.h"
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
3 #include "coord.h"
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
4 #include "gray.h"
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
5 #include "sort.h"
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
6 #include "bruyn_common.h"
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
7 #include "pgm.h"
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
8
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
9 char *progname;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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10
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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11 // prints out program's parameters
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
12 void usage(void) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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13 fprintf(stderr, "usage: %s [-b n] [-h] [-k] [-n n] [-o file] [-pP n] [-q n] [-tT n] [-v n] -s file file\n", progname);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
14 fprintf(stderr, "\t-b n\t\tblock size\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
15 fprintf(stderr, "\t-h\t\tprint usage\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
16 fprintf(stderr, "\t-k\t\tdisable block skipping\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
17 fprintf(stderr, "\t-n n\t\tnumber of signature bits to detect\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
18 fprintf(stderr, "\t-o file\t\textracted signature file\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
19 fprintf(stderr, "\t-p n\t\tpattern type for zone 1\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
20 fprintf(stderr, "\t-P n\t\tpattern type for zone 2\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
21 fprintf(stderr, "\t-q n\t\tsignature strength\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
22 fprintf(stderr, "\t-s file\t\tembedded signature\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
23 fprintf(stderr, "\t-t n\t\tthreshold for noise\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
24 fprintf(stderr, "\t-T n\t\tthreshold for slope\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
25 fprintf(stderr, "\t-v n\t\tverbosity level\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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26 exit(0);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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27 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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28
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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29 int main(int argc, char *argv[]) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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30 FILE *in = stdin;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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31 FILE *out = stdout;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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32 FILE *sig = NULL;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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33
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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34 gray** image;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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35 gray **block;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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36 gray **zone;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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37 gray **category1, **category2;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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38 gray maxval;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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39 double *slope;
8
f83ef905a63d fixing many warnings
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents: 0
diff changeset
40 int rows, cols, format;
0
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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41 int c;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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42 int i, j;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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43 int n;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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44 int col, row;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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45 int n_block;
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 char signature_name[MAXPATHLEN];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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48 char input_name[MAXPATHLEN] = "(stdin)";
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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49 char output_name[MAXPATHLEN] = "(stdout)";
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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50
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
51 double quality = 0.0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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52 double threshold_noise = 0.0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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53 double threshold_slope = 0.0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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54 int pattern1 = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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55 int pattern2 = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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56 int blocksize = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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57 int seed;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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58
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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59 int verbose = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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60 int skipping = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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61
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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62 struct coords *coords;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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63
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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64 progname = argv[0];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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65
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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66 pgm_init(&argc, argv); wm_init2();
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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67
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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68 // parse command line and set options
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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69 while ((c = getopt(argc, argv, "b:h?n:o:p:P:q:s:t:T:v:k")) != EOF) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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70 switch (c) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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71 case 'h':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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72 case '?':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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73 usage();
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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74 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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75 case 'k':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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76 skipping = 1;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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77 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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78 case 'n':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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79 nbit_signature = atoi(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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80 if (nbit_signature <= 0 || nbit_signature > NBITSIGNATURE) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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81 fprintf(stderr, "%s: invalid signature length %d\n", progname, nbit_signature);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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82 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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83 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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84 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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85 case 'o':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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86 if ((out = fopen(optarg, "wb")) == NULL) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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87 fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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88 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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89 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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90 strcpy(output_name, optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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91 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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92 case 'p':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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93 pattern1 = atoi(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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94 if (pattern1 <= 0 || pattern1 > NPATTERN) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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95 fprintf(stderr, "%s: pattern type out of range\n", progname);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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96 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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97 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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98 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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99 case 'P':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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100 pattern2 = atoi(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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101 if (pattern2 <= 0 || pattern2 > 3) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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102 fprintf(stderr, "%s: pattern type out of range\n", progname);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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103 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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104 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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105 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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106 case 'q':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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107 quality = atof(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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108 if (quality <= 0) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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109 fprintf(stderr, "%s: quality factor %f out of range\n", progname, quality);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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110 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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111 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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112 case 's':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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113 if ((sig = fopen(optarg, "r")) == NULL) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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114 fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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115 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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116 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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117 strcpy(signature_name, optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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118 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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119 case 't':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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120 threshold_noise = atof(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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121 if (threshold_noise <= 0) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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122 fprintf(stderr, "%s: noise threshold %f out of range\n", progname, threshold_noise);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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123 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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124 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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125 case 'T':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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126 threshold_slope = atof(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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127 if (threshold_slope <= 0) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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128 fprintf(stderr, "%s: slope threshold %f out of range\n", progname, threshold_slope);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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129 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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130 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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131 case 'v':
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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132 verbose = atoi(optarg);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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133 if (verbose < 0) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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134 fprintf(stderr, "%s: verbosity level %d out of range\n",progname, verbose);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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135 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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136 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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137 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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138 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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139 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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140
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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141 argc -= optind;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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142 argv += optind;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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143
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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144 if (argc > 1) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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145 usage();
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
146 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
147 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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148
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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149 // open input image file or read from stdin
8
f83ef905a63d fixing many warnings
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents: 0
diff changeset
150 if (argc == 1 && *argv[0] != '-') {
0
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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151 if ((in = fopen(argv[0], "rb")) == NULL) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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152 fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
153 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
154 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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155 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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156 strcpy(input_name, argv[0]);
8
f83ef905a63d fixing many warnings
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents: 0
diff changeset
157 }
0
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
158
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
159 // read signature file and set options
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
160 // command line options override signature file options
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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161 if (sig) {
8
f83ef905a63d fixing many warnings
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents: 0
diff changeset
162 char line[1024];
0
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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163 fgets(line, sizeof(line), sig);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
164 if (strspn(line, "BRSG") >= 4) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
165 if (nbit_signature == 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
166 fscanf(sig, "%d\n", &nbit_signature);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
167 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
168 fscanf(sig, "%*d\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
169 if (skipping == 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
170 fscanf(sig, "%d\n", &skipping);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
171 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
172 fscanf(sig, "%*d\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
173 if (pattern1 == 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
174 fscanf(sig, "%d\n", &pattern1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
175 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
176 fscanf(sig, "%*d\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
177 if (pattern2 == 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
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178 fscanf(sig, "%d\n", &pattern2);
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, "%*d\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
181 if (quality == 0.0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
182 fscanf(sig, "%lf\n", &quality);
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 (threshold_noise == 0.0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
186 fscanf(sig, "%lf\n", &threshold_noise);
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, "%*lf\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
189 if (threshold_slope == 0.0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
190 fscanf(sig, "%lf\n", &threshold_slope);
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, "%*lf\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
193 if (blocksize == 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
194 fscanf(sig, "%d\n", &blocksize);
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 fscanf(sig, "%d\n", &seed);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
198 srandom(seed);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
199 n_signature = NBITSTOBYTES(nbit_signature);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
200 fread(signature, sizeof(char), n_signature, sig);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
201 init_signature_bits();
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
202 fscanf(sig, "\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
203 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
204 else {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
205 fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
206 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
207 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
208 fclose(sig);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
209 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
210 else {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
211 fprintf(stderr, "%s: signature file not specified, use -s file option\n", progname);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
212 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
213 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
214
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
215 if (pattern1 <= 0 || pattern2 <= 0 || pattern1 > NPATTERN || pattern2 > NPATTERN) {
8
f83ef905a63d fixing many warnings
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents: 0
diff changeset
216 fprintf(stderr, "%s: invalid pattern type specified\n", progname);
0
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
217 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
218 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
219
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
220 // read dimensions of input image file
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
221 pgm_readpgminit(in, &cols, &rows, &maxval, &format);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
222
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
223 // see if we can extract all signature bits
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
224 // we want at least half of the blocks untouched
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
225 if (((rows / blocksize) * (cols / blocksize)) < nbit_signature / 2) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
226 fprintf(stderr, "%s: image not large enough to contain %d bits of signature\n", progname, nbit_signature);
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 n_block = blocksize * blocksize;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
230
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
231 // allocate structure to remember which blocks we already touched,
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
232 // allow plenty of room to skip over blocks
8
f83ef905a63d fixing many warnings
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents: 0
diff changeset
233 if ((coords = alloc_coords(nbit_signature * 16)) == NULL) {
0
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
234 fprintf(stderr, "%s: unable to allocate memory\n", progname);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
235 exit(1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
236 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
237
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
238 // read in input image file
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
239 image = pgm_allocarray(cols, rows);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
240 for (row = 0; row < rows; row++)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
241 pgm_readpgmrow(in, image[row], cols, maxval, format);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
242
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
243 fclose(in);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
244
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
245 row = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
246 col = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
247
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
248 // allocate memory for one block
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
249 block = alloc_grays(blocksize, blocksize);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
250
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
251 // allocate memory for zone classification
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
252 zone = alloc_grays(blocksize, blocksize);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
253
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
254 // allocate memory for category classification
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
255 category1 = alloc_grays(blocksize, blocksize);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
256 category2 = alloc_grays(blocksize, blocksize);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
257
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
258 // set up category classification array according to
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
259 // pattern type parameter
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
260 for (i = 0; i < blocksize; i++)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
261 for (j = 0; j < blocksize; j++) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
262 category1[j][i] = lookup_pattern(pattern1, i, j);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
263 category2[j][i] = lookup_pattern(pattern2, i, j);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
264 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
265
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
266 // allocate memory for slope calculation
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
267 slope = malloc(sizeof(double) * n_block);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
268
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
269 fprintf(out, "BRWM\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
270 fprintf(out, "%d\n", nbit_signature);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
271
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
272 // extract all the signature bits, one by one
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
273 n = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
274 while (n < nbit_signature) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
275 int xb;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
276 int yb;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
277 int blocktype;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
278 double smax;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
279 int alpha, beta_minus, beta_plus;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
280 double mean_1A, mean_1B, mean_2A, mean_2B, mean_1, mean_2;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
281 int n_1A, n_1B, n_2A, n_2B, n_1, n_2;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
282 double sigma, sigma_1, sigma_2;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
283 int zone1_ok, zone2_ok;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
284
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
285 // find an unused block randomly, depending on seed
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
286 do {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
287 xb = random() % (cols / blocksize);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
288 yb = random() % (rows / blocksize);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
289 } while (add_coord(coords, xb, yb) < 0);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
290
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
291 // copy image block
8
f83ef905a63d fixing many warnings
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents: 0
diff changeset
292 fprintf(stderr, "XXX1 %d %d %d\n", xb*blocksize, yb*blocksize, blocksize);
0
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
293 copy_grays_to_block(block, image, xb * blocksize, yb * blocksize, blocksize, blocksize);
8
f83ef905a63d fixing many warnings
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents: 0
diff changeset
294 fprintf(stderr, "XXX2\n");
f83ef905a63d fixing many warnings
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents: 0
diff changeset
295
0
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
296 if (verbose > 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
297 fprintf(stderr, "detecting bit #%d in block at (%d/%d)\n", n, xb * blocksize, yb * blocksize);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
298
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
299 // sort luminance values in block to represent increasing function F
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
300 sort_grays(block[0], n_block);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
301
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
302 // calculate slopes of F and determine smax, the max. slope of F
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
303 // the index where smax occures is called alpha
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
304 alpha = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
305 smax = 0.0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
306 for (i = 0; i < n_block - 1; i++) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
307 slope[i] = block[0][i + 1] - block[0][i];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
308 if (slope[i] > smax) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
309 smax = slope[i];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
310 alpha = i;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
311 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
312 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
313 slope[n_block - 1] = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
314
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
315 // block type classification
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
316 blocktype = BLOCKTYPE_UNKNOWN;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
317
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
318 if (smax < threshold_noise) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
319 // block has noise contrast
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
320 beta_minus = beta_plus = alpha;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
321 blocktype = BLOCKTYPE_NOISE;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
322 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
323 else {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
324 // block has progressive or hard contrast, let's find out...
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
325
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
326 beta_minus = alpha - 1;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
327 while (beta_minus >= 0 && smax - slope[beta_minus] <= threshold_slope)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
328 beta_minus--;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
329
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
330 beta_plus = alpha + 1;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
331 while (beta_plus < n_block && smax - slope[beta_plus] <= threshold_slope)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
332 beta_plus++;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
333
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
334 if (beta_minus + 1 == alpha && beta_plus - 1 == alpha)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
335 blocktype = BLOCKTYPE_HARD;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
336 else
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
337 blocktype = BLOCKTYPE_PROGRESSIVE;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
338 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
339
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
340 if (verbose > 1) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
341 fprintf(stderr, "blocktype: %d\n", blocktype);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
342 fprintf(stderr, "Smax = %lf, alpha = %d, beta- = %d, beta+ = %d\n", smax, alpha, beta_minus, beta_plus);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
343 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
344
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
345 // block pixel classification
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
346 for (i = 0; i < blocksize; i++)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
347 for (j = 0; j < blocksize; j++) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
348 gray pixel = image[yb * blocksize + j][xb * blocksize + i];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
349 zone[j][i] = ZONE_VOID;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
350 switch (blocktype) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
351 case BLOCKTYPE_PROGRESSIVE:
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
352 case BLOCKTYPE_HARD:
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
353 if (pixel < block[0][beta_minus])
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
354 zone[j][i] = ZONE_1;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
355 else if (pixel > block[0][beta_plus])
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
356 zone[j][i] = ZONE_2;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
357 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
358 case BLOCKTYPE_NOISE:
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
359 if (pixel < block[0][n_block / 2])
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
360 zone[j][i] = ZONE_1;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
361 else if (pixel > block[0][n_block / 2])
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
362 zone[j][i] = ZONE_2;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
363 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
364 default:
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
365 fprintf(stderr, "%s: invalid block type\n", progname);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
366 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
367 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
368 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
369
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
370 // calculate mean values for zone/categories
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
371 mean_1A = mean_1B = mean_2A = mean_2B = mean_1 = mean_2 = 0.0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
372 n_1A = n_1B = n_2A = n_2B = n_1 = n_2 = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
373 for (i = 0; i < blocksize; i++)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
374 for (j = 0; j < blocksize; j++) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
375 gray pixel = image[yb * blocksize + j][xb * blocksize + i];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
376 int pixel_zone = zone[j][i];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
377 int pixel_category = CATEGORY_VOID;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
378 if (pixel_zone == ZONE_1)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
379 pixel_category = category1[j][i];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
380 else if (pixel_zone == ZONE_2)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
381 pixel_category = category2[j][i];
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
382
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
383 switch (pixel_zone | pixel_category) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
384 case CLASSIFICATION_1A:
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
385 n_1++;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
386 n_1A++;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
387 mean_1A += pixel;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
388 mean_1 += pixel;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
389 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
390 case CLASSIFICATION_1B:
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
391 n_1++;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
392 n_1B++;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
393 mean_1B += pixel;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
394 mean_1 += pixel;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
395 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
396 case CLASSIFICATION_2A:
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
397 n_2++;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
398 n_2A++;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
399 mean_2A += pixel;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
400 mean_2 += pixel;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
401 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
402 case CLASSIFICATION_2B:
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
403 n_2++;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
404 n_2B++;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
405 mean_2B += pixel;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
406 mean_2 += pixel;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
407 break;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
408 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
409 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
410
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
411 if (n_1 && n_1A && n_1B) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
412 mean_1 /= (double) n_1;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
413 mean_1A /= (double) n_1A;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
414 mean_1B /= (double) n_1B;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
415 zone1_ok = 1;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
416 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
417 else {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
418 mean_1 = mean_1A = mean_1B = 0.0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
419 zone1_ok = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
420 if (verbose > 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
421 fprintf(stderr, "zone 1 unusable\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
422 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
423
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
424 if (n_2 && n_2A && n_2B) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
425 mean_2 /= (double) n_2;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
426 mean_2A /= (double) n_2A;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
427 mean_2B /= (double) n_2B;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
428 zone2_ok = 1;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
429 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
430 else {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
431 mean_2 = mean_2A = mean_2B = 0.0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
432 zone2_ok = 0;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
433 if (verbose > 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
434 fprintf(stderr, "zone 2 unusable\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
435 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
436
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
437 // bit extraction
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
438 if (zone1_ok && zone2_ok) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
439 sigma_1 = mean_1A - mean_1B;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
440 sigma_2 = mean_2A - mean_2B;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
441
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
442 if (verbose > 2) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
443 fprintf(stderr, "m_1A = %lf, m_1B = %lf\n", mean_1A, mean_1B);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
444 fprintf(stderr, "m_2A = %lf, m_2B = %lf\n", mean_2A, mean_2B);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
445 fprintf(stderr, "sigma1 = %lf, sigma2 = %lf\n", sigma_1, sigma_2);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
446 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
447
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
448 #define EPSILON 0.001
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
449 if (fabs(sigma_1 * sigma_2) < EPSILON) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
450 // case 3
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
451 sigma = MAX(fabs(sigma_1), fabs(sigma_2));
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
452 set_signature_bit(n, sigma > 0.0);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
453 if (verbose > 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
454 fprintf(stderr, "case 3, bit #%d = %d\n", n, sigma > 0.0);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
455 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
456 else if (sigma_1 * sigma_2 > 0.0) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
457 // case 1
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
458 set_signature_bit(n, sigma_1 > 0.0);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
459 if (verbose > 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
460 fprintf(stderr, "case 1, bit #%d = %d\n", n, sigma_1 > 0.0);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
461 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
462 else if (sigma_1 * sigma_2 < 0.0) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
463 // case 2
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
464 sigma = (double) (n_1A + n_1B) * sigma_1 + (double) (n_2A + n_2B) * sigma_2;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
465 set_signature_bit(n, sigma > 0.0);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
466 if (verbose > 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
467 fprintf(stderr, "case 2, bit #%d = %d\n", n, sigma > 0.0);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
468 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
469 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
470 else if (zone1_ok) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
471 set_signature_bit(n, mean_1A > mean_1B);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
472 if (verbose > 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
473 fprintf(stderr, "case 4, bit #%d = %d\n", n, mean_1A > mean_1B);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
474 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
475 else if (zone2_ok) {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
476 set_signature_bit(n, mean_2A > mean_2B);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
477 if (verbose > 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
478 fprintf(stderr, "case 5, bit #%d = %d\n", n, mean_2A > mean_2B);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
479 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
480 else {
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
481 // pathological case - can it ever happen?
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
482 if (verbose > 0)
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
483 fprintf(stderr, "block skipped\n");
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
484 if (!skipping) continue;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
485 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
486
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
487 n++;
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
488 }
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
489
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
490 free_grays(category2);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
491 free_grays(category1);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
492 free_grays(zone);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
493 free_grays(block);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
494
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
495 // write extracted signature
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
496
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
497 fwrite(signature, sizeof(char), n_signature, out);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
498 fclose(out);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
499
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
500 pgm_freearray(image, rows);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
501
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
502 exit(0);
Peter Meerwald <pmeerw@cosy.sbg.ac.at>
parents:
diff changeset
503 }

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