2. Image Registration Techniques An overview （2。）.pdfVIP

International Journal of Signal Processing, Image Processing and Pattern Recognition Vol. 2, No.3, September 2009 Image Registration Techniques: An overview Medha V. Wyawahare, Dr. Pradeep M. Patil, and Hemant K. Abhyankar Vishwakarma Institute of Technology, Pune, Maharashtra State,India medha_w@, patil_pm@, hkabhyankar12@ Abstract Image registration is a vital problem in medical imaging. It has many potential applications in clinical diagnosis (Diagnosis of cardiac, retinal, pelvic, renal, abdomen, liver, tissue etc disorders). It is a process of aligning two images into a common coordinate system thus aligning them in order to monitor subtle changes between the two. Registration algorithms compute transformations to set correspondence between the two images the purpose of this paper is to provide a comprehensive review of the existing literature available on Image registration methods. We believe that it will be a useful document for researchers longing to implement alternative Image registration methods for specific applications. Keywords: Image registration, co-ordinate system, correspondence. 1. Introduction Image processing methods, which are possibly able to visualize objects inside the human body, are of special interest. Advances in computer science have led to reliable and efficient image processing methods useful in medical diagnosis, treatment planning and medical research. In clinical diagnosis using medical images, integration of useful data obtained from separate images is often desired. The images need to be geometrically aligned for better observation.