How to sum binary sub pixels from 150x150 pixels?

I have a binary image 150x150 pixels, I would like to divided into 4 part so 1st part pixel ration (X:Y) will be (1:75, 1:75) and 2nd part will be (1:75, 76:end) and 3rd will be (76:end, 1:75) and 4th will be (76:end, 76:end). Now I would like to calculate sum of 1st, 2nd, 3rd and 4th divided part.

Answer 1

[Image Analyst]

Another way:

upperLeftSum = sum(sum(binaryImage(1:75, 1:75)))
upperRightSum = sum(sum(binaryImage(1:75, 76:end)))
lowerLeftSum = sum(sum(binaryImage(76:end, 1:75)))
lowerRightSum = sum(sum(binaryImage(76:end, 76:end)))

[Kh. Islam]

Thank you very much, it is really appreciated.

Answer 2

[Azzi Abdelmalek]

A=randi([0 1],150)  % Example
b=mat2cell(A,75*ones(2,1),75*ones(2,1))
out=cellfun(@(x) sum(x(:)),b)

If you have Image Processing toolbox

out=blockproc(A,[75,75],@(x) sum(x.data(:)))

[Kh. Islam]

Thank you for your Answer it is really it is really appreciated.