NDLI: Stereo in the presence of specular reflection

Content Provider	IEEE Xplore Digital Library
Author	Bhat, D.N. Nayar, S.K.
Copyright Year	1995
Description	Author affiliation: Dept. of Comput. Sci., Columbia Univ., New York, NY, USA (Bhat, D.N.; Nayar, S.K.)
Abstract	The problem of accurate depth estimation using stereo in the presence of specular reflection is addressed. Specular reflection, a fundamental and ubiquitous reflection mechanism, is viewpoint dependent and can cause large intensity differences at corresponding points, resulting in significant depth errors. We analyze the physics of specular reflection and the geometry of stereopsis which led us to a relationship between stereo vergence, surface roughness, and the likelihood of a correct match. Given a lower bound on surface roughness, an optimal binocular stereo configuration can be determined which maximizes precision in depth estimation despite specular reflection. However, surface roughness is difficult to estimate in unstructured environments. Therefore, trinocular configurations, independent of surface roughness, are determined such that at each scene point visible to all sensors, at least one stereo pair can compute produce depth. We have developed a simple algorithm to reconstruct depth from the multiple stereo pairs.<>
Starting Page	1086
Ending Page	1092
File Size	761865
Page Count	7
File Format	PDF
ISBN	0818670428
DOI	10.1109/ICCV.1995.466813
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-06-20
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rough surfaces Surface roughness Layout Optical reflection Computer science Geometry Surface reconstruction Stereo image processing Reflectivity Rendering (computer graphics)
Content Type	Text
Resource Type	Article

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