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» Approximation algorithms for aligning points
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CVPR
2011
IEEE
14 years 6 months ago
Projective Alignment of Range and Parallax Data
An approximately Euclidean representation of the visible scene can be obtained directly from a range, or ‘time-offlight’, camera. An uncalibrated binocular system, in contras...
Miles Hansard, Radu Horaud, Michel Amat, Seungkyu ...
ECCV
2006
Springer
16 years 4 months ago
An Integrated Model for Accurate Shape Alignment
In this paper, we propose a two-level integrated model for accurate face shape alignment. At the low level, the shape is split into a set of line segments which serve as the nodes ...
Lin Liang, Fang Wen, Xiaoou Tang, Ying-Qing Xu
STACS
2001
Springer
15 years 7 months ago
Approximation Algorithms for the Bottleneck Stretch Factor Problem
The stretch factor of a Euclidean graph is the maximum ratio of the distance in the graph between any two points and their Euclidean distance. Given a set S of n points in Rd, we ...
Giri Narasimhan, Michiel H. M. Smid
STOC
2007
ACM
94views Algorithms» more  STOC 2007»
16 years 2 months ago
Sampling-based dimension reduction for subspace approximation
We give a randomized bi-criteria algorithm for the problem of finding a k-dimensional subspace that minimizes the Lp-error for given points, i.e., p-th root of the sum of p-th
Amit Deshpande, Kasturi R. Varadarajan
CORR
2008
Springer
133views Education» more  CORR 2008»
15 years 2 months ago
Approximation Algorithms for Shortest Descending Paths in Terrains
A path from s to t on a polyhedral terrain is descending if the height of a point p never increases while we move p along the path from s to t. No efficient algorithm is known to ...
Mustaq Ahmed, Sandip Das, Sachin Lodha, Anna Lubiw...