Sobel Edge Detection¶

Steps:

1. Take a grayscale image
2. To get an output image of the same size , we pad the image with zeros
3. Convolve the image with the x and y kernels for Sobel, Sobel-Feldman, Scharr, Lapacian
4. Take the gradients for edge detection
5. Final output

image source : https://en.wikipedia.org/wiki/Sobel_operator

Results are as follows: