sum the matrix 3x3 and looping
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how to calculate the total of overlap region 3x3 of a matrix and include loop function as it continue to calculate row by row and column by column.
2 Comments
the cyclist
on 28 Feb 2014
Edited: the cyclist
on 28 Feb 2014
This is not even close to detailed enough to help you. For starters, what does "overlap region" mean?
Please remember, we only know what you tell us about your problem.
Here is a nice guide to asking good questions here: http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer
Accepted Answer
Image Analyst
on 1 Mar 2014
That can be done very simply with imfilter() or conv2():
outputArray = conv2(double(inputArray), ones(3), 'same');
Every element (pixel) in the output array (image) will be the sum of input elements (pixels) in the sliding window.
7 Comments
Image Analyst
on 2 Mar 2014
Edited: Image Analyst
on 2 Mar 2014
x = [1 2 3 4;5 6 7 8;9 10 11 12;13 14 15 16]
theSums = conv2(x, ones(3), 'valid')
Result:
theSums =
54 63
90 99
As you can see, you forgot one sum. Please mark the answer as Accepted if we're done here. Thanks.
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