Image Processing

7.1 Assume that a bi-level input image x[ni, n2] of 512x512 as shown below, where the dark region has amplitude of 50 and the white background has amplitude of 200 511 0 511 xIn1, n2l An edge detector (consisting of two filters) is applied to x[n,, n2] which will produce two filtered images G(x[n,, n2]) and G2(x[ni, n2]). These two images will be combined to form one gray level image y[n,, n2] using the absolute sum A segmentation will then be performed on this image to produce a binary edge image. Assume that segmentation is based on the operator 255 (white if In, 2T 7.1.1. Use Roberts edge detector on this image. Select an appropriate threshold values T such that z[n1, n2] will only show all the edges. Specify your threshold T and sketch your output image 7.1.2. Repeat 7.1.1. using Prewitt edge detector