Figure 4.

CE-net network structure diagram. (a) The original U-Net encoder block is first supplemented by the ResNet-34 block, shown as (b), to be pretrained by ImageNet. A dense convolution (DAC) block and a RMP block were contained in the bottleneck module. Eventually, the features are withdrawn and gathered in the decoder module. The feature size is enlarged by a decoder block (c), including 1 × 1 convolution and 3 × 3 deconvolution operations, to supplement the original upsampling operation [11].