International Journal of Computer Applications
Cellular Automata (CA) are common and most simple models of parallel computations. Edge detection is one of the crucial tasks in image processing, especially in processing biological and medical images. CA can be successfully applied in image processing. This paper presents a new method for edge detection of binary images based on two dimensional twenty five neighborhood cellular automata. The method considers only linear rules of CA for extraction of edges under null boundary condition. The performance of this approach is compared with some existing edge detection techniques.