code for sampling an image to form patches

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ANCY 2013-12-31

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https://ww2.mathworks.cn/matlabcentral/answers/111100-code-for-sampling-an-image-to-form-patches

回答： Image Analyst 2013-12-31

If any one knows the code for sampling an image to make the larg image into small sections then please share it with me.

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Answer 1

Walter Roberson 2013-12-31

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https://ww2.mathworks.cn/matlabcentral/answers/111100-code-for-sampling-an-image-to-form-patches#answer_119739

在 MATLAB Online 中打开

patch_cell = mat2cell( 8*ones(1,size(IMAGE,1)/8), 8*ones(1,size(IMAGE,2)/8), size(IMAGE,3) );

for 8 x 8 patches.

Then patch_cell{5,19} would be the 5th row of patches, 19th patch over.

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ANCY 2013-12-31

I mean how to make small subdivisions of image from a large image.That is how to make small samples from large sample?If u know the full matlab code for subsampling the image then please share it with me

Walter Roberson 2013-12-31

This code does exactly that, using 8 x 8 pixel subdivisions of the image array named IMAGE. If you want to use a different size such as 64 x 64, replace the 8's by 64's.

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