how to mask on roi area

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asthana
asthana 2014-2-19
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
Image Analyst 2014-2-19
See my demos, attached.

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Dishant Arora
Dishant Arora 2014-2-19
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

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