NDLI: Line Assisted Light Field Triangulation and Stereo Matching

Content Provider	IEEE Xplore Digital Library
Author	Zhan Yu Xinqing Guo Haibing Ling Lumsdaine, A. Jingyi Yu
Copyright Year	2013
Description	Author affiliation: Univ. of Delaware, Newark, DE, USA (Zhan Yu; Xinqing Guo; Jingyi Yu) \|\| Temple Univ., Philadelphia, PA, USA (Haibing Ling) \|\| Indiana Univ., Bloomington, IN, USA (Lumsdaine, A.)
Abstract	Light fields are image-based representations that use densely sampled rays as a scene description. In this paper, we explore geometric structures of 3D lines in ray space for improving light field triangulation and stereo matching. The triangulation problem aims to fill in the ray space with continuous and non-overlapping simplices anchored at sampled points (rays). Such a triangulation provides a piecewise-linear interpolant useful for light field super-resolution. We show that the light field space is largely bilinear due to 3D line segments in the scene, and direct triangulation of these bilinear subspaces leads to large errors. We instead present a simple but effective algorithm to first map bilinear subspaces to line constraints and then apply Constrained Delaunay Triangulation (CDT). Based on our analysis, we further develop a novel line-assisted graph-cut (LAGC) algorithm that effectively encodes 3D line constraints into light field stereo matching. Experiments on synthetic and real data show that both our triangulation and LAGC algorithms outperform state-of-the-art solutions in accuracy and visual quality.
Sponsorship	IEEE Comput. Soc.
Starting Page	2792
Ending Page	2799
File Size	3191285
Page Count	8
File Format	PDF
ISBN	9781479928408
ISSN	15505499
DOI	10.1109/ICCV.2013.347
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-12-01
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Three-dimensional displays Geometry Cameras Image edge detection Image segmentation Image resolution Algorithm design and analysis Light Field Stereo Matching Light Field Triangulation
Content Type	Text
Resource Type	Article
Subject	Computer Vision and Pattern Recognition Software

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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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