ROS Resources: Documentation | Support | Discussion Forum | Index | Service Status | ros @ Robotics Stack Exchange

Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.

0

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

asked 2011-05-08 19:00:19 -0600

Julius
955 ●31 ●45 ●56

updated 2011-06-17 10:34:12 -0600

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?

edit retag flag offensive close merge delete

Comments

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 -0600 )edit

1 Answer

Sort by » oldest newest most voted

1

answered 2011-06-17 10:51:20 -0600

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

edit flag offensive delete link

Comments

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 -0600 )edit

Question Tools

Stats

Asked: 2011-05-08 19:00:19 -0600

Seen: 3,159 times

Last updated: Jun 17 '11

Related questions

ROS Answers is licensed under Creative Commons Attribution 3.0 Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.

Powered by Askbot version 0.10.2