/* adapt threshold to image values values */
double SsocrImg::adapt_threshold(double thresh, int x, int y, int w, int h, SsocrThreshold thresh_flags) const
{
switch (thresh_flags) {
case ABSOLUTE_THRESHOLD:
return thresh;
break;
case ADAPTIVE_THRESHOLD:
return get_threshold(thresh/100.0, x, y, w, h);
break;
case ITERATIVE_THRESHOLD:
return iterative_threshold(thresh, x, y, w, h);
break;
default:
return thresh;
break;
}
}
/* adapt threshold to image values values */
double adapt_threshold(Imlib_Image *image, double thresh, luminance_t lt, int x,
int y, int w, int h, int flags)
{
double t = thresh;
if(!(flags & ABSOLUTE_THRESHOLD)) {
if(flags & DEBUG_OUTPUT)
fprintf(stderr, "adjusting threshold to image: %f ->", t);
t = get_threshold(image, thresh/100.0, lt, x, y, w, h);
if(flags & DEBUG_OUTPUT)
fprintf(stderr, " %f\n", t);
if(flags & DO_ITERATIVE_THRESHOLD) {
if(flags & DEBUG_OUTPUT)
fprintf(stderr, "doing iterative_thresholding: %f ->", t);
t = iterative_threshold(image, t, lt, x, y, w, h);
if(flags & DEBUG_OUTPUT)
fprintf(stderr, " %f\n", t);
}
}
if((flags & VERBOSE) || (flags & DEBUG_OUTPUT)) {
fprintf(stderr, "using threshold %.2f\n", t);
}
return t;
}