Fig. 2
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12880-021-00634-z/MediaObjects/12880_2021_634_Fig2_HTML.png)
a The basic residual block. b The ResNet18 architecture. The numbers in each convolutional layers denote the number of filters
a The basic residual block. b The ResNet18 architecture. The numbers in each convolutional layers denote the number of filters