testsuite/perceptual_curves.c

   1
   2 #ifdef HAVE_CONFIG_H
   3 #include "config.h"
   4 #endif
   5
   6 #include <schroedinger/schro.h>
   7 #include <schroedinger/schrowavelet.h>
   8
   9 #include <stdio.h>
  10 #include <string.h>
  11 #include <stdlib.h>
  12 #include <math.h>
  13
  14
  15 int
  16 main (int argc, char *argv[])
  17 {
  18   int i;
  19   double ppd_max;
  20   double ppd;
  21
  22   schro_init();
  23
  24   ppd_max = 720 / (2.0*atan(0.5/3.0)*180/M_PI);
  25
  26   for(i=0;i<100;i++) {
  27     ppd = ppd_max * (i/100.0);
  28
  29     printf("%d %g %g %g %g\n",
  30         i, ppd,
  31         1.0/schro_encoder_perceptual_weight_constant (ppd),
  32         1.0/schro_encoder_perceptual_weight_moo (ppd),
  33         1.0/schro_encoder_perceptual_weight_ccir959 (ppd));
  34   }
  35
  36   return 0;
  37 }
  38