Content Based Medical Image Retrieval Using Shape Descriptors: Review Paper

This review paper consists of the work already done on medical images. The work includes the previous works being done in this field related to the medical images being retrieved by using the various shape descriptors. In this paper a brief overview of digital imaging is given. This paper presents the basics of image retrieval process that includes the two techniques for image retrieval and about the fourier descriptor to extract the features of image which is one of the important research contents in content based image retrieval process. Different shape signatures have been exploited to derive fourier descriptors, however fourier descriptors derived from different signatures can have significant different effect on the retrieval process.