METHOD FOR ROBUST SCALE-SPACE ANALYSIS OF 3D LOCAL STRUCTURES IN MEDICAL IMAGES

摘要

A method for determining the location, shape and orientation of a tumor in a medical image includes finding a plurality of spatial extrema µ of a D-dimensional spatial signal f for a set of bandwidths H by performing (11) mean shift-based gradient-ascent iterations for a set of bandwidths H and then determining (12) a D-dimensional spread and orientation of the signal about each extrema µ by estimating a covariance Sigma of the signal f for each extrema µ . The optimal estimate of µ and Sigma is determined by performing (13) a Jensen-Shannon divergence on the full set µ of and Sigma .