Comparison of edge detectors

Edge detection is the most important pre-processing step in image processing. In this paper we studied various edge detection methods and different kinds of operators using edge detection. The various edge detection techniques such as Robert, sobel, prewitt, canny are compared with each other. In end a new nature inspired algorithm has been proposed and compared with the traditional operators. We see that the number of edges detected are more when detected with the bio-inspired algorithms.