A New Approach for Extracting the Contour of an ROI in Medical Images

A novel approach is presented to extract the contour of an ROI (region of interest) in medical images. It combines threshold segmentation method and SEL (sequential edge linking) algorithm. The salient area is located according to the human visual characteristics, and then the threshold is obtained and used to binarilize the whole image. The binary image is processed by the SEL algorithm to extract the contour of an ROI. Experiments show that the proposed method offers excellent ability to suppress noise and false edges. It can extract the precise and continuous contour of an ROI in medical images.