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ICCV
2003
IEEE
15 years 2 months ago
Paracatadioptric Camera Calibration Using Lines
Paracatadioptric sensors combine a parabolic shaped mirror and a camera inducing an orthographic projection. Such a configuration provides a wide field of view while keeping a s...
João P. Barreto, Helder Araújo
CVIU
2006
104views more  CVIU 2006»
14 years 9 months ago
A unifying geometric representation for central projection systems
In this paper we study projection systems with a single effective viewpoint, including combinations of mirrors and lenses (catadioptric) as well as just lenses with or without rad...
João P. Barreto
AAAI
2000
14 years 11 months ago
GeoRep: A Flexible Tool for Spatial Representation of Line Drawings
A central problem in qualitative reasoning is understanding how people reason about space and shape with diagrams. We claim that progress in diagrammatic reasoning is being slowed...
Ronald W. Ferguson, Kenneth D. Forbus
GIAE
2004
Springer
275views Mathematics» more  GIAE 2004»
15 years 2 months ago
Conic Sections and Meet Intersections in Geometric Algebra
This paper first gives a brief overview over some interesting descriptions of conic sections, showing formulations in the three geometric algebras of Euclidean spaces, projective ...
Eckhard M. S. Hitzer
AVI
2008
14 years 12 months ago
Visualizing antenna design spaces
This paper describes a long-term project exploring advanced visual interfaces for antenna design. MERL developed three successive prototypes that embodied an evolution towards lar...
Kent Wittenburg, Tom Lanning, Darren Leigh, Kathy ...