An Analysis of Edge Detectors and Improved Hybrid Technique for Edge Detection of Images
Parvinder S. Sandhu · 2013
This paper provides an analysis of various edge detection techniques viz. sobel, prewitt, robert, laplacian of gaussian and canny in which canny edge detector outperforms all existing edge detectors. A new hybrid edge detection technique for extracting edges, line, boundaries and circles from a given input image is also proposed in this paper. It utilizes canny for extracting edges and thereafter output edges are refined by application of hough transform. It has been successful to extract edges, lines, boundaries and circles of any image and is immune to various noise effects and other disturbances.