Pattern Recognition Letters
A variational PDE based level set method for a simultaneous segmentation and non-rigid registration
MICCAI'05 Proceedings of the 8th international conference on Medical Image Computing and Computer-Assisted Intervention - Volume Part I
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In this note we present a coupled optimization model forboundary determination. One part of the model incorporatesa prior shape into a geometric active contour modelwith a fixed parameter. The second part determines the'best' parameter used in the first part by maximizing the mutualinformation of the image geometry between the priorand an aligned novel image over all the alignments, thatare the solutions of the first part corresponding to differentparameters. We also present an alternative method, whichgenerates an intensity model formed as the average of a setof aligned training images. Experimental results on cardiacultrasound images are presented. These results indicatethat the proposed model provides close agreement withexpert traced borders, and the parameter determined in thismodel for one image can be used for images with similarproperties. The existence of a solution to the proposed minimizationproblem is also discussed.