From: Lip segmentation using automatic selected initial contours based on localized active contour model
 |  | 1 (%) | 2 (%) | 3 (%) | 4 (%) |
---|---|---|---|---|---|
The proposed method | OL | 83.1 | 88.5 | 80.7 | 75.4 |
SE | 17.7 | 13.1 | 21.1 | 29.2 | |
Green component with circular initial contour | OL | 80.3 | 85.1 | 69.9 | 61.8 |
SE | 16.6 | 13.1 | 36.4 | 48.0 | |
Gray images with circular initial contour | OL | 82.6 | 85.7 | 75.4 | 70.9 |
SE | 17.1 | 15.8 | 23.6 | 26.2 | |
Combined color space images with circular initial contour | OL | 81.1 | 84.6 | 76.3 | 74.1 |
SE | 16.3 | 16.8 | 10.2 | 11.4 | |
Gray images with the proposed initial contours | OL | 82.7 | 83.4 | 71.6 | 70.3 |
SE | 19.6 | 16.0 | 23.7 | 22.5 |