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» Camera Calibration from Two Shadow Trajectories
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ICIP
2005
IEEE
14 years 9 months ago
Eigenwalks: walk detection and biometrics from symmetry patterns
In this paper we present a symmetry-based approach which can be used to detect humans and to extract biometric characteristics from video image-sequences. The method employs a simp...
Laszlo Havasi, Tamás Szirányi, Zolt&...
VRCAI
2004
ACM
14 years 1 months ago
AR for the masses: building a low-cost portable AR system from off-the-shelf components
To create the illusion that a virtual object coexists with physical objects and its environment is always an important goal in the research of augmented reality. Though there are ...
Hsiang-Ting Chen, Chun-Fa Chang
CVPR
2011
IEEE
12 years 11 months ago
Line-Based Relative Pose Estimation
We present an algorithm for calibrated camera relative pose estimation from lines. Given three lines with two of the lines parallel and orthogonal to the third we can compute the ...
Ali Elqursh, Ahmed Elgammal
ICCV
1995
IEEE
13 years 11 months ago
A Theory of Specular Surface Geometry
Atheoreticalframeworkisintroducedfortheperceptionofspecularsurfacegeometry.Whenanobserver moves in three-dimensional space, real scene features such as surface markings remain stat...
Michael Oren, Shree K. Nayar
CVPR
2008
IEEE
14 years 9 months ago
What do color changes reveal about an outdoor scene?
In an extended image sequence of an outdoor scene, one observes changes in color induced by variations in the spectral composition of daylight. This paper proposes a model for the...
Kalyan Sunkavalli, Fabiano Romeiro, Wojciech Matus...