280 search results - page 17 / 56 » Approximate nearest neighbors using sparse representations |
ICASSP
2011
IEEE
14 years 1 months ago
2011
IEEE
Perceptual image quality assessment (IQA) and sparse signal representation have recently emerged as high-impact research topics in the field of image processing. Here we make one...
FOCS
2006
IEEE
15 years 3 months ago
2006
IEEE
We investigate the optimality of (1+ )-approximation algorithms obtained via the dimensionality reduction method. We show that: • Any data structure for the (1 + )-approximate n...
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CIVR
2003
Springer
15 years 2 months ago
2003
Springer
Abstract. The paper describes a fast system for appearance based image recognition . It uses local invariant descriptors and efficient nearest neighbor search. First, local affine ...
87
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DAGSTUHL
2007
14 years 11 months ago
2007
We address the problem of finding sparse wavelet representations of high-dimensional vectors. We present a lower-bounding technique and use it to develop an algorithm for computi...
ICPR
2010
IEEE
15 years 3 months ago
2010
IEEE
In this paper, a novel approach for contour-based 2D shape recognition is proposed, using a recently introduced class of information theoretic kernels. This kind of kernels, based...