Edge Detection Methods in Digital Image Processing

Abstract

Edge detection is identifying the discontinuities in an image and show locating sharp in image and identify in each scene boundaries of objects and pixel intensity abrupt changes and discontinuities characterize in images. There are many methods and operation which is constructed to find the edge in image and that it is sensitive with uniform region and large gradients in picture. Each method designed to be sensitive to certain types of edges depend on Edge structure, Noise environment, Edge orientation, the work and variables. The geometry of the edge detection algorithms determines a characteristic direction in which it is more sensitive to edges. The image contain high level of frequency it is difficult to find edge detection because it is noisy image; the algorithms can operation diagonal edges vertical or horizontal. Efforts to reduce the noise in image result in blurred and distorted edges.