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CVPR
2010
IEEE
14 years 5 months ago
Geo-location estimation from two shadow trajectories
The position of a world point’s solar shadow depends on its geographical location, the geometrical relationship between the orientation of the sunshine and the ground plane wher...
Lin Wu, Xiaochun Cao
ISAAC
2009
Springer
78views Algorithms» more  ISAAC 2009»
14 years 4 months ago
Reconstructing Polygons from Scanner Data
A range-finding scanner can collect information about the shape of an (unknown) polygonal room in which it is placed. Suppose that a set of scanners returns not only a set of poin...
Therese C. Biedl, Stephane Durocher, Jack Snoeyink
ICPR
2008
IEEE
14 years 4 months ago
The projective equation of a circle and its application in camera calibration
In this article, we present the projective equation of a circle in a perspective view, which naturally encodes such important geometric entities as the projected circle center, th...
Yinqiang Zheng, Yuncai Liu
ICRA
2005
IEEE
114views Robotics» more  ICRA 2005»
14 years 3 months ago
Geometric Reformulation of 3-Fingered Force-Closure Condition
— This paper addresses the problem of testing whether three contact points form a 3-fingered force-closure grasp in two dimensions. In particular, assuming frictional point cont...
Attawith Sudsang, Thanathorn Phoka
FIMH
2005
Springer
14 years 3 months ago
A Deterministic-Statistic Adventitia Detection in IVUS Images
Plaque analysis in IVUS planes needs accurate intima and adventitia models. Large variety in adventitia descriptors difficulties its detection and motivates using a classification...
Debora Gil, Aura Hernandez, Antoni Carol, Oriol Ro...