| 11 | namespace embree |
| 12 | { |
| 13 | double compareImages(Ref<Image> image0, Ref<Image> image1) |
| 14 | { |
| 15 | /* compare image size */ |
| 16 | const size_t width = image0->width; |
| 17 | const size_t height = image0->height; |
| 18 | if (image1->width != width) return inf; |
| 19 | if (image1->height != height) return inf; |
| 20 | |
| 21 | /* compare both images */ |
| 22 | double diff = 0.0; |
| 23 | for (size_t y=0; y<height; y++) |
| 24 | { |
| 25 | for (size_t x=0; x<width; x++) |
| 26 | { |
| 27 | const Color c0 = image0->get(x,y); |
| 28 | const Color c1 = image1->get(x,y); |
| 29 | diff += sqr(fabs(c0.r - c1.r))/3.0f; |
| 30 | diff += sqr(fabs(c0.g - c1.g))/3.0f; |
| 31 | diff += sqr(fabs(c0.b - c1.b))/3.0f; |
| 32 | } |
| 33 | } |
| 34 | |
| 35 | return diff; |
| 36 | } |
| 37 | |
| 38 | /*! loads an image from a file with auto-detection of format */ |
| 39 | Ref<Image> loadImageFromDisk(const FileName& fileName) |
no test coverage detected