GOALS – I have endothelial cell images (384×152) and I provide as input to the network a patch of size 1×64×64. The patch is extracted around each pixel of the image. This patch contains the central pixel and the surrounding pixels. A patch is therefore analyzed to determine the class of the central pixel. For pixels located at the edges, the original image is extended by adding reflected copies of the edges (cv2.BORDER_REFLECT_101 in cv2 or reflect mode)