Research Article
A Comparative Study of Contemporary Color Tongue Image Extraction Methods Based on HSI
Table 2
Error rates of 4 kinds of tongue image extraction methods.
| Method | Light red tongue | Light white tongue | Red tongue | Deep red tongue | Purple tongue | Tongue with thick white coating | Tongue with thick yellow coating |
| Geodesic active contour | 7.17% | 0.00% | 0.00% | 0.23% | 0.00% | 2.26% | 0.00% | Method based on mathematical morphology and HSI | 0.88% | 1.08% | 0.00% | 1.65% | 0.00% | 0.00% | 0.00% | Method based on sequential algorithm and HSI | 0.13% | 1.93% | 1.35% | 0.55% | 0.30% | 2.03% | 37.05% | Our method with fusion of color and space information | 0.04% | 1.17% | 0.08% | 0.40% | 0.00% | 0.40% | 0.00% |
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