how to mask on roi area

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asthana 2014-2-19

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评论： asthana 2014-2-19

hello sir/madam i want to mask some portion of image and that portion will decide by user not me. so how to mask the portion and how to get the detail about that mask portion like area.

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Image Analyst 2014-2-19

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https://ww2.mathworks.cn/matlabcentral/answers/116745-how-to-mask-on-roi-area#answer_124896

See my demos, attached.

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asthana 2014-2-19

thank you very much

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Dishant Arora 2014-2-19

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https://ww2.mathworks.cn/matlabcentral/answers/116745-how-to-mask-on-roi-area#answer_124887

在 MATLAB Online 中打开

you can ask user to interactively specify ROI:

I = imread('fullfilename');
imshow(I)
h = imfreehand(gca);
wait(h)  % waits for user to specify region of interest 
bw = createMask(h)  % Binary mask with 1's inside ROI