Application of M-estimation in medical images registration
Wufan Chen · Computer Engineering and Applications Journal · 2009
Rigid image registration or matching is a difficult problem in image processing filed.Noise and outlines can play havoc with conventional least-squares estimation,this paper presents a new alignment algorithm relies on M-estimation,which automatically ignores pixel where the intensities are sufficiently different in the two images.A multi-resolution pyramid implementation enables the algorithm to estimate large displacements.Experimental results show robustness and effectiveness of this method.