Figure 1.

Overview of the proposed method. Our method jointly estimates the bidirectional de-formation field and locates regions (denoted as masks) where no correspondence exists. During training, regions where no correspondence exists are excluded from the similarity measure. In the mask area in the lower right corner, white is the initial non-corresponding area, and red is the area after morphological operations. The red box represents the tumor risk area. STN, spatial transformation network; PO, pre-operative; PR, post-recurrence.