// load original image and convert their RGB components to double RGB array
rc = load_img(-1, &img_buffer, &load_w, &load_h, filename, index + z);
if (rc) {
- fprintf(stderr, "Failed to load grey image\n");
+ fprintf(stderr, "Failed to load grey image '%s'\n", filename);
return 0;
}
scale_img(img_buffer, load_w, load_h, scale);