This a "Sobel edge detector" code. In this code, I count a value at the pixel with the Sobel Mask, and then normailize value to be a bitmap with Gray level.-This is a "Sobel edge detector" code. In this code, I count a value at the pixel with the Sob

edge detector operator

the algorithm is about edge detector that is used to detect edges in an image. Prewitt , SobeL and Robertsfilters are used

sobel fillter for edge detector