MATLAB: Region of Interest Image Processing

Question

Hello All

I want to apply some algorithm only on region of interest in an input image.

Let say I have an image A.

image_A=imread('1.jpg'); "size is 576×576"

[rows cols colors]=size(image_A);

image_interest=zeros(rows,cols,colors);

new_image=imcrop(image_A);"this crops only interested region lets say I am cropped the lower region from image_A".

"Now I want this region size as same as image_A" for further processing.

Let say I wan to subtract these two images. like

dist=abs(image_A-new_image)..

can any one help…

Answer 1

Use imresize() to stretch the lower half image up to the size of the original image_A:

new_image = imresize(new_image, size(image_A));