u-net

https://www.researchgate.net/figure/U-Net-architecture-Left-contraction-path-right-expansion-path-After-each-set-of_fig1_342622257

U-Net architecture. Left: contraction path; right: expansion path. After each set of operations, the size of the image and the number of channels is indicated. Operations are: convolution, transposed convolution, max pooling and concatenation. Input and output images are described later in the experimental results section.