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Classification of artery and vein network (CAVnet) architecture. A, The input, consisting of an OCT angiogram of the inner retina. CAVnet has a U-net−like structure. The different colored rectangles represent operations with different parameters. The stride is represented by s. The dilation of the atrous convolutional layer is represented by r. The segmentation results output by CAVnet distinguishes between arteries and veins (B).
