Remove Background from image and select the region of interest

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Ittiphat Limsakul 2019-1-5

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https://ww2.mathworks.cn/matlabcentral/answers/438392-remove-background-from-image-and-select-the-region-of-interest

评论： Image Analyst 2019-1-5

采纳的回答： Image Analyst

I have a image

and I want to remove the background and select Yellow and Red and my output should be

How can I do it ?

thanks

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采纳的回答

Image Analyst 2019-1-5

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编辑：Image Analyst 2019-1-5

在 MATLAB Online 中打开

Try the Color Thresholder app on the Apps tab of the tool ribbon.

After color segmentation, you might also need bwareafilt() or bwareaopen() to get rid of all blobs other than the largest one in the mask (binary image).

mask = bwareafilt(mask, 1); % Extract largest blob only.

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Ittiphat Limsakul 2019-1-5

编辑：Ittiphat Limsakul 2019-1-5

Thanks .I don't want a app . I want a code . Can recommend a code ?

Image Analyst 2019-1-5

Run the app, then click the Export button. Tell it to generate the code as a function.

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