MATLAB: Stretch the middle of image

Question

Suppose I have a .png

How can I use Matlab to stretch the middle third of the image in horizontal direction by a factor of 2?

img = imread('dough.png');%Open the image input
image(img)
 [rows,columns,~] = size(img)
 

Thank you for your help!!!

Answer 1

img = imread('dough.png');%Open the image input
image(img)
 [rows,columns,~] = size(img)
 iwant = imresize(img,[2*rows columns]) ;