NDLI: Recovering the shape of polyhedra using line-drawing analysis and complex reflectance models

Content Provider	IEEE Xplore Digital Library
Author	Shimshoni, I. Ponce, J.
Copyright Year	1994
Description	Author affiliation: Dept. of Comput. Sci., Illinois Univ., Urbana, IL, USA (Shimshoni, I.; Ponce, J.)
Abstract	Following Sugihara, we represent the geometric constraints imposed by the line-drawing of a polyhedron as a set of linear equalities and inequalities. Unlike him, we explicitly take into account the uncertainty in vertex position. This allows us to circumvent the superstrictness of the constraints without deleting any of them. For a given error bound, deciding whether a line-drawing is the correct projection of a polyhedron is reduced to linear programming, and 3D shape recovery is reduced to optimization under linear constraints. Our method can be used for recovering the shape of polyhedral objects whose reflectance can be modelled accurately. We have implemented if for the Lambertian model and the Lambertian model with interreflections. We present results obtained using real images.<>
Starting Page	514
Ending Page	519
File Size	539955
Page Count	6
File Format	PDF
ISBN	0818658258
ISSN	10636919
DOI	10.1109/CVPR.1994.323875
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-06-21
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optimization methods Linear programming Image restoration
Content Type	Text
Resource Type	Article
Subject	Computer Vision and Pattern Recognition Software

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