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| Block Size | Hist. Feature | Feat. Dim. | Sen. | Spec. | Accu. |
|---|---|---|---|---|---|
| 7 by 7 | R plane | 256 | 84.13% | 96.68% | 94.26% |
| G plane | 256 | 79.04% | 93.69% | 90.89% | |
| B plane | 256 | 74.14% | 93.65% | 89.79% | |
| Combined R, G, B | 768 | 94.50% | 98.95% | 98.06% | |
| Proposed CHOBS | 16 | 97.85% | 99.47% | 99.15% |
