Dynamic Regulation of Level Set Parameters Using 3D Convolutional Neural Network for Liver Tumor Segmentation

Figure 4

Construction of the training sets in series. The first row (a)–(e) is the set of label “outside,” where the contour is far away from and out of the tumor boundary. The second row (f)–(j) of adjacent slices is labeled as “inside.” Two classes have distinct features for learning.

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