Basic Three Image Stitching Code

In this code, we have used 3 sub images which have been displaced in X-direction only. Here we have used correlation method in order to find the largest similarity between a patch of rows x 5columns dimension of second image with a series of patches of rows x 5columns dimension from the first sub image. The point giving maximum similarity is saved as index. The second image is then registered & stitched from there over the fist one. Once an image is formed from the above process, the same method is used to stitch the newly stitched image & the third image to form a final stitched image.