Splitting Images?

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Jason 2011-6-22

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/10034-splitting-images

Hi, I have a question here.

Take for example an image of size n by m. What I want is to split the images into 4 similar quadrants as follows: http://www.flickr.com/photos/jokerzy89/5859808219/ Next, I want to swap the following. (1)A and C (2) B and D, then display the final result as a new image.

Can someone please help? Thank you!

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Jason 2011-6-22

Thank you, that is why the floor function comes into picture.

Sean de Wolski 2011-6-22

yes, you could also use ceil.

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采纳的回答

Sean de Wolski 2011-6-22

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/10034-splitting-images#answer_13821

在 MATLAB Online 中打开

swap1324 = @(x)([x((floor(size(x,1)/2)+1):end,(floor(size(x,2)/2)+1):end) x((floor(size(x,1)/2)+1):end,1:floor(size(x,2)/2)); x(1:floor(size(x,1)/2),(floor(size(x,1)/2)+1):end) x(1:floor(size(x,1)/2),1:floor(size(x,2)/2))]);
I = imread('cameraman.tif'); %sample image
I2 = swap1324(I);
imtool(I2)

Obviously the above should be broken down into it's own function that doesn't have to repeat the function floor(size(stuff))) over and over again.