A Unified Level Set Framework Combining Hybrid Algorithms for Liver and Liver Tumor Segmentation in CT Images

Figure 2

Results of hybrid image preprocessing: (a) original image; (b) after anisotropic filter; (c) after scale-specific gradient magnitude filter; (d) after nonlinear grayscale conversion; (e)-(h), respectively, indicate the results of binary conversion with , , , and (part of the liver edge is eliminated within the red circle).

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