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a) B-scan presenting several challenges for ILM segmentation using the original CV model: the yellow arrow shows the ONH region with no retinal layer information except several tissue remaining from nerve fibers and the ILM; the white arrows show shadows caused by the presence of large blood vessels. b) B-scan showing segmentation results using the original CV model. c) Boundary potential V on a sample B-scan. In the red area, V(x) = ρ, whereas in the green area V(x) = 0.
