--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Meerwald-dir/wm_dugad_d.c	Fri Dec 20 13:08:59 2024 +0100
@@ -0,0 +1,261 @@
+#include "wm.h"
+#include "dwt.h"
+#include "dwt_util.h"
+#include "netpbm/pgm.h"
+
+char *progname;
+
+void usage(void) {
+  fprintf(stderr, "usage: %s [-a n] [-e n] [-f n] [-F file] [-h] [-l n] [-n n] [-o file] [-v n] [-t n] -s file file\n\n", progname);
+  fprintf(stderr, "\t-a n\t\talpha factor\n");
+  fprintf(stderr, "\t-e n\t\twavelet filtering method\n");
+  fprintf(stderr, "\t-f n\t\tfilter number\n");
+  fprintf(stderr, "\t-F file\t\tfilter definition file\n");
+  fprintf(stderr, "\t-h\t\tprint usage\n");
+  fprintf(stderr, "\t-l n\t\tdecomposition levels\n");
+  fprintf(stderr, "\t-n n\t\twatermark length\n");
+  fprintf(stderr, "\t-o file\t\tfile for extracted watermark\n");
+  fprintf(stderr, "\t-s file\t\toriginal signature file\n");
+  fprintf(stderr, "\t-t n\t\tdetection threshold\n");
+  fprintf(stderr, "\t-v n\t\tverbosity level\n");
+  exit(0);
+}
+
+void wm_subband(Image s, double *w, int n, double t2, int *m, double *z, double *v) {
+  int i;
+  
+  *m = 0;
+  *z = 0.0;
+  *v = 0.0;
+  for (i = 0; i < s->width * s->height; i++)
+    if (s->data[i] > t2) {
+      (*z) += (s->data[i] * w[i % n]);
+      (*v) += fabs(s->data[i]);
+      (*m)++;
+    }
+}
+
+int main(int argc, char *argv[]) {
+
+  FILE *in = stdin;
+  FILE *out = stdout;
+  FILE *sig = NULL;
+
+  gray **input_image;
+
+  char signature_name[MAXPATHLEN];
+  char output_name[MAXPATHLEN] = "(stdout)";
+  char input_name[MAXPATHLEN] = "(stdin)";
+
+  int c;
+  int i;
+  int n = 0;
+  int method = -1;
+  int level = 0;
+  int filter = 0;
+  char filter_name[MAXPATHLEN] = "";
+
+  double alpha = 0.0;
+  double t2 = 0.0;
+
+  int in_rows, in_cols, in_format;
+  gray in_maxval;
+  int rows, cols;
+  int row;
+
+  double *watermark;
+
+  Image_tree dwts, s;
+
+  int verbose = 0;
+
+  progname = argv[0];
+
+  pgm_init(&argc, argv); wm_init2();
+
+  while ((c = getopt(argc, argv, "a:e:f:F:h?l:n:o:s:v:t")) != EOF) {
+    switch (c) {
+      case 'a':
+        alpha = atof(optarg);
+        if (alpha <= 0.0) {
+          fprintf(stderr, "%s: alpha factor %f out of range\n", progname, alpha);
+          exit(1);
+        }
+        break;
+      case 'e':
+        method = atoi(optarg);
+        if (method < 0) {
+          fprintf(stderr, "%s: wavelet filtering method %d out of range\n", progname, method);
+          exit(1);
+        }
+        break;
+      case 'f':
+        filter = atoi(optarg);
+        if (filter <= 0) {
+          fprintf(stderr, "%s: filter number %d out of range\n", progname, filter);
+          exit(1);
+        }
+        break;
+      case 'F':
+        strcpy(filter_name, optarg);
+        break;
+      case 'h':
+      case '?':
+        usage();
+        break;
+      case 'l':      
+        level = atoi(optarg);
+        if (level <= 0) {
+          fprintf(stderr, "%s: decomposition level %d out of range\n", progname, level);
+          exit(1);
+        }
+        break;
+
+      case 'n':
+        n = atoi(optarg);
+        if (n < 1 || n > 32000) {
+          fprintf(stderr, "%s: watermark length %d out of range\n", progname, n);
+          exit(1);
+        }
+        break;
+      case 'o':
+        if ((out = fopen(optarg, "w")) == NULL) {
+          fprintf(stderr, "%s: unable to open output file %s\n", progname, optarg);
+          exit(1);
+        }
+        strcpy(output_name, optarg);
+        break;
+      case 's':
+        if ((sig = fopen(optarg, "r")) == NULL) {
+          fprintf(stderr, "%s: unable to open signature file %s\n", progname, optarg);
+          exit(1);
+        }
+        strcpy(signature_name, optarg);
+        break;
+      case 't':
+        t2 = atof(optarg);
+        if (t2 <= 0.0) {  
+          fprintf(stderr, "%s: detection threshold %f out of range\n", progname, t2); 
+          exit(1);
+        }
+        break;
+      case 'v':
+        verbose = atoi(optarg);
+        if (verbose < 0) {
+          fprintf(stderr, "%s: verbosity level %d out of range\n", progname, verbose);
+          exit(1);
+        }
+        break;
+    }
+  }
+
+  argc -= optind;
+  argv += optind;
+
+  if (argc > 1) {
+    usage();
+    exit(1);
+  }
+
+  if (argc == 1 && *argv[0] != '-') {
+    if ((in = fopen(argv[0], "rb")) == NULL) {
+      fprintf(stderr, "%s: unable to open input file %s\n", progname, argv[0]);
+      exit(1);
+    }
+    else
+      strcpy(input_name, argv[0]);
+  }
+  
+  if (sig) {
+    char line[32];
+    fgets(line, sizeof(line), sig);
+    if (strspn(line, "DGSG") >= 4) {
+      fscanf(sig, "%d\n", &n);
+      if (level == 0)
+        fscanf(sig, "%d\n", &level);
+      else
+        fscanf(sig, "%*d\n");
+      if (alpha == 0.0)
+        fscanf(sig, "%lf\n", &alpha);
+      else
+        fscanf(sig, "%*f\n");
+      fscanf(sig, "%*f\n");
+      if (t2 == 0.0)
+        fscanf(sig, "%lf\n", &t2);
+      else
+        fscanf(sig, "%*f\n");
+      if (method < 0)
+        fscanf(sig, "%d\n", &method);
+      else
+        fscanf(sig, "%*d\n");
+      if (filter == 0)
+        fscanf(sig, "%d\n", &filter);
+      else
+        fscanf(sig, "%*d\n");
+      if (!strcmp(filter_name, ""))
+        fscanf(sig, "%[^\n\r]\n", filter_name);
+      else
+        fscanf(sig, "%*[^\n\r]\n");
+    }
+    else {
+      fprintf(stderr, "%s: invalid signature file %s\n", progname, signature_name);
+      exit(1);
+    }
+  }
+  else {
+    fprintf(stderr, "%s: signature file not specified, use -s file option\n", progname);
+    exit(1);
+  }
+
+  watermark = malloc(n * sizeof(double));
+  for (i = 0; i < n; i++)
+    fscanf(sig, "%lf\n", &watermark[i]);
+  fclose(sig);
+
+  pgm_readpgminit(in, &in_cols, &in_rows, &in_maxval, &in_format);
+
+  cols = in_cols;
+  rows = in_rows;
+
+  input_image = pgm_allocarray(in_cols, in_rows);
+
+  for (row = 0; row < in_rows; row++) {
+    pgm_readpgmrow(in, input_image[row], in_cols, in_maxval, in_format);
+  }
+
+  fclose(in);
+
+  init_dwt(cols, rows, filter_name, filter, level, method);
+#ifdef POLLEN_STUFF
+#include "pollen_stuff.c"
+#endif
+#ifdef PARAM_STUFF
+#include "param_stuff.c"
+#endif
+
+  dwts = fdwt(input_image);
+
+  fprintf(out, "DGWM\n");
+  fprintf(out, "%d\n", level);
+  fprintf(out, "%f\n", alpha);
+
+  for (i = 0, s = dwts; i < level; i++, s = s->coarse) {
+    int m;
+    double z, v;
+
+    wm_subband(s->horizontal->image, watermark, n, t2, &m, &z, &v);
+    fprintf(out, "%d %f %f\n", m, z, v);
+    wm_subband(s->vertical->image, watermark, n, t2, &m, &z, &v);
+    fprintf(out, "%d %f %f\n", m, z, v);
+    wm_subband(s->diagonal->image, watermark, n, t2, &m, &z, &v);
+    fprintf(out, "%d %f %f\n", m, z, v);
+  }
+
+  fclose(out);
+
+  free(watermark);
+
+  pgm_freearray(input_image, rows);
+
+  exit(0);
+}