# Admissible Linear Map Models of Linear Cameras

1 VEGAS - Effective Geometric Algorithms for Surfaces and Visibility
INRIA Lorraine, LORIA - Laboratoire Lorrain de Recherche en Informatique et ses Applications
2 WILLOW - Models of visual object recognition and scene understanding
CNRS - Centre National de la Recherche Scientifique : UMR8548, Inria Paris-Rocquencourt, DI-ENS - Département d'informatique de l'École normale supérieure
Abstract : This paper presents a complete analytical characterization of a large class of central and non-central imaging devices dubbed linear cameras by Ponce~\cite{Pon09}. Pajdla~\cite{Pajdla02} has shown that a subset of these, the oblique cameras, can be modelled by a certain type of linear map. We give here a full tabulation of all admissible maps that induce cameras in the general sense of Grossberg and Nayar~\cite{GroNay05}, and show that these cameras are exactly the linear ones. Combining these two models with a new notion of intrinsic parameters and normalized coordinates for linear cameras allows us to give simple analytical formulas for direct and inverse projections. We also show that the epipolar geometry of any two linear cameras can be characterized by a fundamental matrix whose size is at most $6\times 6$ when the cameras are uncalibrated, or by an essential matrix of size at most $4\times 4$ when their internal parameters are known. Similar results hold for trinocular constraints.
Type de document :
Communication dans un congrès
23rd IEEE Conference on Computer Vision and Pattern Recognition - CVPR 2010, Jun 2010, San Francisco, United States. IEEE, pp.1578 - 1585, 2010, 2010 IEEE Conference on Computer Vision and Pattern Recognition. 〈10.1109/CVPR.2010.5539784〉

Littérature citée [15 références]

https://hal.inria.fr/inria-00517899
Contributeur : Guillaume Batog <>
Soumis le : mercredi 15 septembre 2010 - 20:15:23
Dernière modification le : mardi 24 avril 2018 - 17:20:13
Document(s) archivé(s) le : vendredi 2 décembre 2016 - 10:44:57

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Guillaume Batog, Xavier Goaoc, Jean Ponce. Admissible Linear Map Models of Linear Cameras. 23rd IEEE Conference on Computer Vision and Pattern Recognition - CVPR 2010, Jun 2010, San Francisco, United States. IEEE, pp.1578 - 1585, 2010, 2010 IEEE Conference on Computer Vision and Pattern Recognition. 〈10.1109/CVPR.2010.5539784〉. 〈inria-00517899〉

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