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The segmentation of a breast US image with irregular shape and posterior acoustic shadowing. (a) The original image with a rectangular ROI placed by user. (b) Manual segmentation. The segmentation results using (c) HP-NCut, (d) Interactive-NCut, and (e) PBLS after 380 iterations. (f) The edge detection result of PBLS (the intensity value ranges from 0 to 1, with the values close to one indicating an edge pixel and the values close to zero indicating a background pixel).
