NDLI: Computer vision based geometric calibration in curved multi-projector displays

Content Provider	IEEE Xplore Digital Library
Author	Yi Sun Shuling Dai Cheng Ren Na Chen
Copyright Year	2010
Description	Author affiliation: Virtual Environments Laboratory, Northeastern University, Boston, US (Na Chen) \|\| State Key Lab of VR Technology and System, Beihang University, Beijing, China (Yi Sun; Shuling Dai; Cheng Ren)
Abstract	In a multi-projector display system, geometric calibration is usually time-consuming and tedious. In this paper, we propose a multi-projector tiled display method with geometry parameters estimation. The method is used for analytic curved surface, such as cylindrical or spherical shaped display. The calibration process is automatic by using computer vision techniques; and in order to estimate the screen and projector parameters, a camera stereo pair with given internals is used to reconstruct 3D points on the screen. In this parametric approach, the camera doesn't have to cover the entire screen and the projectors can be placed roughly, which give the flexibility for various multi-projector display system. For scene rendering, our implementation is distributed, which is more efficient than the image transfer method with modern GPU. At last, we analyzed the effectiveness of the proposed method. Experimental results show that our approach supplied sufficient accuracy and enhanced the immersiveness.
Starting Page	342
Ending Page	348
File Size	1161244
Page Count	7
File Format	PDF
ISBN	9781424455379
e-ISBN	9781424455409
DOI	10.1109/ICCSIT.2010.5563954
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-09
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computational modeling Laboratories computer vision curved screen geometric calibration multi-projector display Rotation measurement
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
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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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