647 search results - page 21 / 130 » A Geometric Functional for Derivatives Approximation |
ORL
2011
13 years 2 months ago
2011
We derive a convex relaxation for cardinality constrained Principal Component Analysis (PCA) by using a simple representation of the L1 unit ball and standard Lagrangian duality. ...
IJCV
2010
13 years 7 months ago
2010
This article improves recent methods for large scale image search. We first analyze the bag-of-features approach in the framework of approximate nearest neighbor search. This lea...
ICIP
1998
IEEE
14 years 10 months ago
1998
IEEE
Abstract- We investigate the functions of given approximation order L that have the smallest support. Those are shown to be linear combinations of the Bspline of degree .L - 1 and ...
CVPR
2004
IEEE
14 years 10 months ago
2004
IEEE
Abstract-- Efficient detection of globally optimal surfaces representing object boundaries in volumetric datasets is important and remains challenging in many medical image analysi...
ICPR
2008
IEEE
14 years 9 months ago
2008
IEEE
In this paper we consider the problem of solving different pose and registration problems under rotational constraints. Traditionally, methods such as the iterative closest point ...