Create a mask with a roi

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yes123
1412 ●12 ●28 ●52

I have an image

Mat image; //(size: 300x300)

And I have a roi:

Rect ROI(50,50,100,100);  //(start from 50,50 and has size 100x100)

I would like to create a mask so keypoints inside of this roi don't get extracted.

//> create mask with 0s inside the ROI and 1s outside
OrbFeatureDetector.detect(image,kps,mask);

Which would be a good way to create this mask?

1 answer

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4775 ●4 ●24 ●62

Mat mask(image.size(), CV_8UC1, Scalar::all(0));
mask(ROI).setTo(Scalar::all(255));

thanks! i was getting confused because i was trying to adapt what gridadapted does with Range. but clearly in this case your solution is much better

yes123 (Jun 10 '13)edit

Asked: Jun 10 '13

Seen: 13,945 times

Last updated: Jun 10 '13