Visual enhancement of interval changes using temporal subtraction, convolving, and non-rigid transformation field mapping

摘要

Method to bring out a temporal difference between corresponding structures in a reference image R and a floating image F by convolving the reference image R and the floating image F with a window function H_w to generate R_w and F_w, applying a non-rigid transformation resulting in a transformation field g(r_R) mapping every location r_R to a corresponding location r_F in the floating image F and generating a subtraction image by performing subtraction R_w(r)−F_w(g(r)) wherein r represents a voxel (x, y, z) in reference image R.