NDLI: A New Coarse-To-Fine Method for Disparity Compuation by Sampling Disparity Space

Content Provider	IEEE Xplore Digital Library
Author	Le Sach, L. Atsuta, K. Kondo, S.
Copyright Year	2008
Description	Author affiliation: Dept. of Sci. & Technol., Tokai Univ., Tokyo (Le Sach, L.) \|\| Dept. of Inf. & Telecommun. Eng., Tokai Univ., Tokyo (Atsuta, K.; Kondo, S.)
Abstract	Image-based 3D reconstruction is a useful and active research area. However, it is a challenge to compute 3D measurements in real-time for high resolution input images even if special hardwares are used. This paper proposes a new coarse-to-fine method that can reduce the computation time of the stereo matching problem. The time reduction is done by sampling disparity spaces and computing the matching costs at only the sampled positions. The disparity map that is derived from a sampled disparity space is used to limit the search region for the finer map to its surrounding region. Because of the sampling of disparity spaces and the limitation of the search region, the computation time is reduced dramatically even if the disparity search range is enlarged significantly. The proposed method has been tested with several public stereo image datasets on the Internet. The experimental results indicate that the proposed method can save much of the computation time compared to the other methods that need to compute all of matching costs inside disparity spaces.
Starting Page	87
Ending Page	94
File Size	5149978
Page Count	8
File Format	PDF
ISBN	9781424423354
DOI	10.1109/ISCIT.2008.4700160
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-21
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computer vision Image resolution Costs Space technology Image sampling Sampling methods Cameras Hardware Stereo vision Image reconstruction
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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