Figure 4. An example of evaluation for segmentation accuracy with the result of manual segmentation (red contour) #2. (A) Seeded region growing (SRG, black), (B) K-means clustering (KMN, yellow), (C) fuzzy C-means clustering (FCM, white), (D) level-set based active contour model (Level-set based ACM, green), (E) localized region-based active contour model (Localized ACM, blue), and (F) overall comparison of accuracy for each method with boundary overlay.