METHOD OF MODEL-BASED ELASTIC IMAGE REGISTRATION FOR COMPARING A FIRST AND A SECOND IMAGE

摘要

The invention aims at improving the point-based elastic registration paradigm. Point-based elastic registration is typically carried out by finding corresponding point landmarks (2, 4) in both images and using the point correspondences as constraints to interpolate the global displacement field. A limitation of this approach is that it only ensures the correspondences between structures where point landmarks (2, 4) can be identified. Alternative concepts are limited by high computational costs for optimization. The concept of the invention provides a method and a system (1) wherein additional deformation field constraints are imposed by: partitioning (PART (ISUBS/SUB, ISUBT/SUB)) one or more restricted structures corresponding in the first (3) and the second (5) image and imposing additional constraints ( SUPAdd/SUP