Fig. 2From: Epidermis segmentation in skin histopathological images based on thickness measurement and k-means algorithmComparison of automated epidermis segmentation and manually labeled ground truth. a A skin histopathological image with labeled epidermis contours. b GTSA technique [22]. c CET technique [23]. d MCGT technique [3]. Note that the segmentation results in (b–d) contain many false positive regions from the dermisBack to article page