Edge detection is one of the most popular techniques in computer vision. It is used as a preprocessing step in many applications. With edge detection, you can mark points in a digital image where light intensity suddenly changes. The sudden changes in the properties of an image want to highlight important events or changes in the physical world of which the images are representations. These changes identify, for example, surface orientation discontinuities, depth discontinuities, and so on.
Detecting edges
Getting ready
In this recipe, we will learn how to use different edge detectors to detect edges in the input image.