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ORB 32byte Descriptor

asked 2016-06-30 03:16:15 -0500

WhoAmI gravatar image

Why is an ORB 32 Byte descriptor?

If I have 200 keypoints detected in an Image then will I get only one 32 Byte (256 bits) for all the 200 keypoints?

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answered 2016-06-30 03:33:53 -0500

berak gravatar image

updated 2016-06-30 03:37:13 -0500

no, 32 byte per keypoint, a Mat(200,32,CV_8U);

(each 32byte descriptor ends up on a row)

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Can I use CV_32F for an ORB?

WhoAmI gravatar imageWhoAmI ( 2016-06-30 06:51:22 -0500 )edit

no you can't. (and you should use an empty Mat() as descriptor in orb->compute())

berak gravatar imageberak ( 2016-06-30 07:52:05 -0500 )edit
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Asked: 2016-06-30 03:16:15 -0500

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Last updated: Jun 30 '16