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» A second-order PDE technique to construct distance functions...
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ICIP
2003
IEEE
14 years 6 months ago
A second-order PDE technique to construct distance functions with more accurate derivatives
In this paper we demonstrate the use of an anisotropic PDE to improve the behavior of first and second derivatives of a distance function. We begin by deriving a property of these...
Siddharth Manay, Anthony J. Yezzi
WSC
2007
13 years 7 months ago
Path-wise estimators and cross-path regressions: an application to evaluating portfolio strategies
Recently developed dual techniques allow us to evaluate a given sub-optimal dynamic portfolio policy by using the policy to construct an upper bound on the optimal value function....
Martin B. Haugh, Ashish Jain
CVPR
2009
IEEE
14 years 12 months ago
New Appearance Models for Natural Image Matting
Image matting is the task of estimating a fore- and background layer from a single image. To solve this ill posed problem, an accurate modeling of the scene’s appearance is ne...
Dheeraj Singaraju (Johns Hopkins University), Cars...
SIGMOD
2010
ACM
262views Database» more  SIGMOD 2010»
13 years 9 months ago
K-nearest neighbor search for fuzzy objects
The K-Nearest Neighbor search (kNN) problem has been investigated extensively in the past due to its broad range of applications. In this paper we study this problem in the contex...
Kai Zheng, Gabriel Pui Cheong Fung, Xiaofang Zhou