| Benchmark Images | 323016.jpg | 113044.jpg | ||
| Contour Operators | Gradient | Laplacian | Gradient | Laplacian |
| Hybridorder | 0.3790 | 0.2095 | 0.2855 | 0.2586 |
| Classification order (K = 2) | 0.3781 | 0.2099 | 0.2938 | 0.2603 |
| Classification order (K = 3) | 0.3790 | 0.2108 | 0.2990 | 0.2581 |
| Classification order (K = 4) | 0.3790 | 0.2099 | 0.3016 | 0.2595 |
| Classification order (K = 5) | 0.379 | 0.2103 | 0.2894 | 0.2590 |
| Classification order (K = 6) | 0.3790 | 0.2095 | 0.2981 | 0.2599 |