Cropping a face out of an image and leave a black rectangle on the original image

asked 2019-03-15 14:47:13 -0600

ray4
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I have an image with multiple faces. Each time I detect a face I want to remove the thumbnail and leave a black rectangle where the face was. How do I leave that black rectangle on the original image where the face was? I am am doing this in Java.

Thanks

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answered 2019-03-16 02:35:32 -0600

berak
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it's not very difficult. assuming you get Rect for each face from the detection:

Mat roi = image.submat(rect);
roi.setTo(Scalar.all(0));

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Asked: 2019-03-15 14:47:13 -0600

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Last updated: Mar 16 '19

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Cropping a face out of an image and leave a black rectangle on the original image