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The network architecture of under-to-fully-complete progressive restoration network (UFNet) used for the sinogram restoration network Gsino and the image restoration network Gimg in DuDoUFNet (Figure 2). Our UFNet consists of a under-complete network (stage 1) and an fully-complete network (stage 2) with cross stage feature fusions (blue, yellow, and green lines). Supervision is applied on both stages’ outputs.
