NDLI: PEGUS: An Image-Based Robust Pose Estimation Method

Content Provider	IEEE Xplore Digital Library
Author	Mehta, S.S. Barooah, P. Dixon, W.E. Pasiliao, E.L. Curtis, J.W.
Copyright Year	2012
Abstract	In this paper, a robust pose (i.e., position and orientation) estimation algorithm using two-views captured by a calibrated monocular camera is presented. A collection of pose hypotheses is obtained when more than the minimum number of feature points required to uniquely identify a pose are available in both the images. The pose hypotheses - unit quaternion and unit translation vectors - lie on the S3 and S2 manifolds in the Euclidean 4-space and 3-space, respectively. Probability density function (pdf) of the rotation and translation pose hypotheses is evaluated by gridding the unit spheres where a robust, coarse pose estimate is identified at the mode of the pdf. Further, a "refining" pdf of the geodesic distance from the coarse pose estimate is constructed for the hypotheses within a grid containing the coarse estimate. A refined pose estimate is obtained by averaging the low-noise hypotheses in the neighbourhood of the mode of refining pdf. Pose estimation results of the proposed method are compared with RANSAC and nonlinear mean-shift (NMS) algorithms using the Oxford Corridor sequence and the robustness to feature outliers, image noise rejection, and scalability to number of features is analyzed using the synthetic data experiments. Processing time comparison with the RANSAC and NMS algorithms indicate that the deterministic time requirement of the proposed and NMS algorithms is amenable to a variety of visual servo control applications.
Starting Page	78
Ending Page	85
File Size	264928
Page Count	8
File Format	PDF
ISBN	9781467312714
DOI	10.1109/CRV.2012.18
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-05-28
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computers two-view geometry outlier rejection robust pose estimation Robots
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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