Roberts Edge Detector how to use?

1. How does Roberts edge detection work?
2. What is edge detection explain edge detection by using Roberts edge detector?

How does Roberts edge detection work?

Brief Description. The Roberts Cross operator performs a simple, quick to compute, 2-D spatial gradient measurement on an image. It thus highlights regions of high spatial frequency which often correspond to edges. In its most common usage, the input to the operator is a grayscale image, as is the output.

What is edge detection explain edge detection by using Roberts edge detector?

Edge detection is mostly used for the measurement, detection and location changes in an image gray. Edges are the basic feature of an image. In an object, the clearest part is the edges and lines. With the help of edges and lines, an object structure is known.