Segmentation Under Occlusions Using Selective Shape Prior

Sheshadri R. Thiruvenkadam, Tony F. Chan, Byung-Woo Hong

Abstract: In this work, we address the problem of segmenting multiple objects, with possible occlusions, in a variational setting. Most segmentation algorithms based on low-level features often fail under uncertainties such as occlusions and subtle boundaries. We introduce a segmentation algorithm incorporating high-level prior knowledge which is the shape of objects of interest. A novelty in our approach is that prior shape is introduced in a selective manner, only to occluded boundaries. Further, a direct application of our framework is that it solves the segmentation with depth problem that aims to recover the spatial order of overlapping objects for certain classes of images. We also present segmentation results on synthetic and real images.