Edge completion from sparse data: a level-set approach
Zhujiang Cao, Benoît M. Dawant · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2004
Intensity differences between objects are often used for segmentation. In an ideal situation, these differences permit the computation of edges that form complete contours around objects in the image. However, edges found in real images are usually a set of real and spurious disconnected boundary segments. Even more challenging are those so called apparent or subjective contours whose boundary are not defined by intensity or texture variations. In this paper, we present a novel method to segment and reconstruct images with missing boundaries, including images with large missing edges commonly found in ultrasound imaging. We test our algorithm on classic synthetic images, phantom images and on real ultrasound images of the bladder, heart, and colon.