How to divide an image into blocks if my image size is not a multiple of the given number?

I have the following code with me to divide my bmp gray image into blocks:-

img = imread('C:\somewhere\someimage.bmp'); numblockheight = size(img, 1) / 8; numblockwidth = size(img, 2) / 8; assert(all(mod([numblockwidth, numblockheight], 1) == 0), 'Image size is not a multiple of 8') imageblocks = mat2cell(img, ones(1, numblockheight) * 8, ones(1, numblockwidth) * 8, size(img, 3))

The output is showing an error that my image is not a multiple of 8 as written in the code. But what to do in this case? How can I divide my image into blocks and display them as shown in the figure attached?

[Stephen23]

"But what to do in this case?"

How do we know this? This is your decision: you could ignore the remaining pixels, pad the image with pixels (virtual or real), overlap your samples, interpolate, sample smaller sub-matrices at the edges, etc, etc. What you do depends on your algorithm, which we know nothing about.

Don't panic and ask random strangers how your algorithm should work: stop and think about it yourself: how does your algorithm need to deal with the remaining pixels? Then research how to implement that.

[Chandvi Arora]

I am just a beginner with very little knowledge in this area. I had a problem which I simply could not deal with, and hence I asked if anyone could help. This is the only reason I put up this question.