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What's the difference between OpenCV's BRIEF and rBRIEF in tod_*?

asked 2011-05-08 19:00:19 -0500

Julius
955 ●31 ●45 ●56

updated 2011-06-17 10:34:12 -0500

kwc
12244 ●54 ●90 ●132 http://kwc.org/

OpenCV implements the BRIEF descriptor as described in "BRIEF: Binary Robust Independent Elementary Features" (ECCV 2010). It's called cv::BriefDescriptorExtractor. ROS packages tod_training and tod_detecting have an own implementation called tod::RBriefDescriptorExtractor. I wonder where's the difference. Is there any publication I have missed?

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I now think the "r" stands for "Rotation" (backed up by a glance at the source code), and BRIEF as it is originally described in the paper is not designed to produce rotation-invariant features. So, this indicates the modification to incorporate rotation-invariance. Needs to be confirmed, though.

Julius ( 2011-06-04 10:05:03 -0500 )edit

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answered 2011-06-17 10:51:20 -0500

1111 ●25 ●20

rBRIEF was a modified BRIEF. It has proven to be insufficient and was replaced by a new descriptor (ORB) that will be detailed in OpenCV 2.3 due on Monday June 20th, 2011

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Thanks. Looking forward to the corresponding paper. ORB can also be used from OpenCV trunk (I know that rev 5465 works).

Julius ( 2011-06-21 01:20:10 -0500 )edit

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Asked: 2011-05-08 19:00:19 -0500

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Last updated: Jun 17 '11

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