*Rai University, Gujarat, India
**Professor, Department of CS, ISTAR, GTU, V.V. Nagar, Gujarat, India
Online published on 25 May, 2016.
Edge detection is one of the most commonly used operations in image analysis. An edge is the border between an object and the background, and indicates the boundary between overlapping objects. Basic properties of the objects such as area, perimeter, and shape can be measured if the objects in the image can be identified accurately. In this paper, we have compared techniques for edge detection in image processing. We consider various well-known measuring metrics used in image processing applied to standard images in this comparison.