Image Registration in Medical Image Processing-An Overview

Image registration the process is very difficult problem facing in medical field . The process of image registration is an automatic or manual procedure. It tries to find similar points between two images and align themto minimize the "error", i.e. distance measure between twoimages.The dataset can be multiple photographs like MRI,spect,CT scan images from different times ,depths or viewpoints.The purpose of this paper is to provide a overall information about the existing registration techniques and a detailed approach about non rigid registration which is in advanced mode .