70 search results - page 4 / 14 » Signal approximation using the bilinear transform |
CVPR
2010
IEEE
13 years 6 months ago
2010
IEEE
We examine the problem of large scale nearest neighbor search in high dimensional spaces and propose a new approach based on the close relationship between nearest neighbor search...
TVCG
2008
13 years 7 months ago
2008
Abstract-- Visual data comprise of multi-scale and inhomogeneous signals. In this paper, we exploit these characteristics and develop a compact data representation technique based ...
STOC
2012
ACM
11 years 10 months ago
2012
ACM
We consider the problem of computing the k-sparse approximation to the discrete Fourier transform of an ndimensional signal. We show: • An O(k log n)-time randomized algorithm f...
DCC
2004
IEEE
14 years 7 months ago
2004
IEEE
It is well-known that wavelet transforms provide sparse decompositions over many types of image regions but not over image singularities/edges that manifest themselves along curve...
Book
"The Discrete Fourier Transform (DFT) can be understood as a numerical approximation to the Fourier transform. However, the DFT has its own exact Fourier theory, which is the ...