Patent ID: 7929799

Claim:
A method of processing a mask-based image by deforming an input Region of Interest (ROI) in the image to produce an output ROI, said method comprising the steps of: i) receiving, by a computer, a definition of a stretch vector on the input ROI; ii) generating, by the computer, a plurality of vectors originating in the input ROI, each vector being parallel to the stretch vector and having a magnitude determined by a roll-off function, g, said function having a value that decreases continuously with distance in any direction between the origin of the stretch vector and the origin of the generated vector, from a value of one at the origin of the stretch vector to a value of substantially zero at some point distal to the origin of the stretch vector, and iii) processing, by the computer, each vector such that the value of a voxel or pixel in which a vector terminates is adjusted according to the value of the voxel or pixel at the origin of each vector.