Edge Detection Examples Edge Detection Download this example as a Mathematica notebook .
Edge detection is a problem of fundamental importance in image analysis.
In typical images, edges characterize object boundaries and are therefore useful for segmentation, registration, and identification of objects in a scene. In this section, the construction, characteristics, and performance of a number of gradient and zero-crossing edge operators will be presented. An edge is a jump in intensity. The cross-section of an edge has the shape of a ramp. The first derivative assumes a local maximum at an edge.