what should i do to make both images of same size

lena.jpg image is having value 256*256 uint8 while kssk.jpg is having value 225*225*3 uint8. i want image of value 256*256 uint8,how to make it same or anyone is having pls attach sample

Answer 1

[Von Duesenberg]

im = imread('kssk.jpg');
newIm = rgb2gray(imresize(im, [256, 256]));

Answer 2

[KSSV]

Read about imresize

https://in.mathworks.com/help/images/ref/imresize.html