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» On the Error Parameter of Dispersers
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IVC
2002
102views more  IVC 2002»
15 years 6 months ago
A new approach to vanishing point detection in architectural environments
A man-made environment is characterized by many parallel lines and orthogonal edges. In this article, a new method for detecting the three mutually orthogonal directions of such a...
Carsten Rother
MOC
1998
109views more  MOC 1998»
15 years 6 months ago
A comparison of regularizations for an ill-posed problem
Abstract. We consider numerical methods for a “quasi-boundary value” regularization of the backward parabolic problem given by ut + Au = 0 , 0 < t < T u(T ) = f, where A ...
Karen A. Ames, Gordon W. Clark, James F. Epperson,...
VLDB
2002
ACM
106views Database» more  VLDB 2002»
15 years 6 months ago
Approximate Frequency Counts over Data Streams
We present algorithms for computing frequency counts exceeding a user-specified threshold over data streams. Our algorithms are simple and have provably small memory footprints. A...
Gurmeet Singh Manku, Rajeev Motwani
JMIV
2008
142views more  JMIV 2008»
15 years 5 months ago
Camera Motion Estimation Through Planar Deformation Determination
In this paper, we propose a global method for estimating the motion of a camera which films a static scene. Our approach is direct, fast and robust, and deals with adjacent frames...
Claire Jonchery, Françoise Dibos, Georges K...
TMI
2008
138views more  TMI 2008»
15 years 5 months ago
Dynamic Positron Emission Tomography Data-Driven Analysis Using Sparse Bayesian Learning
A method is presented for the analysis of dynamic positron emission tomography (PET) data using sparse Bayesian learning. Parameters are estimated in a compartmental framework usin...
Jyh-Ying Peng, John A. D. Aston, R. N. Gunn, Cheng...