Sector expansion and elliptical modeling of blue‐gray ovoids for basal cell carcinoma discrimination in dermoscopy images

Blue‐gray ovoids (B‐GOs), a critical dermoscopic structure for basal cell carcinoma (BCC), offer an opportunity for automatic detection of BCC. Due to variation in size and color, B‐GOs can be easily mistaken for similar structures in benign lesions. Analysis of these structures could afford accurate characterization and automatic recognition of B‐GOs, furthering the goal of automatic BCC detection. This study utilizes a novel segmentation method to discriminate B‐GOs from their benign mimics.