To extract local binary pattern features without background

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ali 2016-8-30

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评论： Salma Hassan 2017-5-7

Hi all I detect the foreground object and all zeros fro background, the sample image is attached. So how can I only apply the LBP. The original sample and the ROI that is defined with red lines ehich I want to extract features from only this area. HOw can do that. Is there any way and any suggestion and codes. Thanks.

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回答（2 个）

Image Analyst 2016-8-30

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https://ww2.mathworks.cn/matlabcentral/answers/301394-to-extract-local-binary-pattern-features-without-background#answer_233168

localBinaryPattern.m

See attached demo.

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Image Analyst 2016-9-2

To see what properties histObject has, set a breakpoint there and type histObject on the command line. You will see Value, BinEdges, etc.

Salma Hassan 2017-5-7

you mean histObject = imhist(grayImage(grayImage>= 0));

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ali 2016-9-2

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https://ww2.mathworks.cn/matlabcentral/answers/301394-to-extract-local-binary-pattern-features-without-background#answer_233639

Your code works I think 8,1 neighbor so is it possible to find and work 8.2 16.1 16.2 24.1 24.2 24.3 etc.

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Image Analyst 2016-9-2

I don't understand at all what this is trying to say.

ali 2016-9-2

Your LBP code works as 8 neighbor. So is it possible to update it for 8,2 16,1 16,2 24,1 etc. and your suggested histogram means only gray values not LBP does it?

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