Abstract: This paper studied the algorithms of image edge detection and filtering processing. Because the traditional SUSAN algorithm for threshold selection is difficult to get more information of the image, this paper put forward a Robert based on image edge detection technology improved algorithm, which combines with SUSAN feature point matcking technology,at the same time,uses average filtering algorithm to remove the noise in image detection process, and finally uses the image thinning method to do image refining processing. The simulation results show that the proposed algorithm can effectively detect the image and reduce the complexity of the algorithm.

Key words: SUSAN algorithm, Edge detection, Mcan filter, Robert algorithm