How can I split the image into blocks and then extract the features from each block?

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wisam kh 2018-8-14

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评论： wisam kh 2018-8-14

采纳的回答： Image Analyst

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Hello

I extracts image features (invariant moment) using this code

 [filename, pathname] = uigetfile({'*.*';'*.bmp';'*.jpg';'*.gif'}, 'Pick a Degraded Fingerprint Image File');
 im = imread([pathname,filename]);
 figure, imshow(im);title('Fingerprint Image');
 n1=invmoments(im);

How can I split the image into blocks(every block like 32x32) and then extract the features from each block?

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Image Analyst 2018-8-14

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https://ww2.mathworks.cn/matlabcentral/answers/414806-how-can-i-split-the-image-into-blocks-and-then-extract-the-features-from-each-block#answer_332747

See the FAQ: https://matlab.wikia.com/wiki/FAQ#How_do_I_split_an_image_into_non-overlapping_blocks.3F

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wisam kh 2018-8-14

Thank you

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Yuvaraj Venkataswamy 2018-8-14

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https://ww2.mathworks.cn/matlabcentral/answers/414806-how-can-i-split-the-image-into-blocks-and-then-extract-the-features-from-each-block#answer_332722

在 MATLAB Online 中打开

 if true
    mat2cell(I,size(I,1)/32*ones(32,1), size(I,2)/32*ones(32,1), 3)
  end

This will split an image into 32 x 32 blocks. Then you can extract image features from each blocks using for loop.

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wisam kh 2018-8-14

Thank you for this interaction

Yuvaraj Venkataswamy 2018-8-14

You are welcome.

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Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement Neighborhood and Block Processing

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