how can i remove object bigger than x pixel

Question

Lukasz Jarod 2014-12-18

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https://ww2.mathworks.cn/matlabcentral/answers/167108-how-can-i-remove-object-bigger-than-x-pixel

评论： Ankit Sahay 2020-5-8

采纳的回答： Sven

i know that bwareaopen remove small elements , but how can i remove object bigger than x pixels???

http://www.image-share.com/ijpg-2791-262.html

i want to just the letter to stay so how can i remove that 2 big objects???

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Answer 1

Sven 2014-12-18

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https://ww2.mathworks.cn/matlabcentral/answers/167108-how-can-i-remove-object-bigger-than-x-pixel#answer_162747

编辑：Sven 2014-12-18

在 MATLAB Online 中打开

Hi Lukasz,

Here's an example that removes all objects greater than 1000 pixels in area. You probably have your own BW image and your own threshold that you can use in a similar way.

I = imread('rice.png');
BW = I>80;
cc = bwconncomp(BW);
stats = regionprops(cc);
threshold = 1000;
removeMask = [stats.Area]>threshold;
BW(cat(1,cc.PixelIdxList{removeMask})) = false;

Did this help you out?

Thanks, Sven.