... framework combining adaptive prompts, boundary enhancement, and lightweight SAM variants to automate defect analysis—critical for evaluating nuclear fuel structural integrity and safety. Design/methodology/approach A three-stage approach improved SAM: (1) Sauvola-based adaptive thresholding...

... concrete images. Initially anisotropic diffusion filter is applied to smoothen the concrete images. Adaptive threshold and gray level-based edge stopping constant are used in the diffusion process. The statistical six sigma-based method is utilized to segment the cracks from smoothened concrete images...