Fig. 5

Residual refinement process of our proposed method. In the rare situation of our SBox-Net producing unsatisfactory segmentation results, our Click-Net can be invoked to refine the results. First, a surrounding box (the green box in column a) is drawn by the user to select the region of the target lesion. Based on the surrounding box, a preliminary result is returned by SBox-Net. While the results are not satisfactory, the user can provide positive clicks (the green check marks in column a) and negative clicks (the red cross marks in column a) to further refine the segmentations. The third column shows the fused segmentation maps of Click-Net and SBox-Net compared to the SBox-Net results and ground truth masks in the second and fourth columns, respectively. In the final column, the fused segmentations overlayed on the cropped original images are presented