Non-Rigid Matching Using Demons - Computer Vision and Pattern Recognition, 1996. Proceedings CVPR '96, 1996 IEEE Computer Society Co

W e present the concept of non-rigid matching based o n demons, by reference to Maxwell’s demons. W e contrast this concept with the more conventional viewpoint of attraction. W e show that demons and attractive points are clearly distinct f o r large deformations, but also that they become similar for small displacements, encompassing techniques close to optical flow. We describe a general iterative matching method based o n demons, and derive f rom it three different non-rigid matching algorithms, one using all the image intensities, one using only contours, and one f o r already segmented images. A t last, we present results with synthesized and real deformations, with applications to Computer Vision and Medical Image Processing. keywords: non-rigid matching, elastic matching, image sequence analysis, deformable model, inter-patient registration