13 search results - page 2 / 3 » Nonequispaced Hyperbolic Cross Fast Fourier Transform |
FOCM
2008
13 years 5 months ago
2008
We investigate the problem of reconstructing sparse multivariate trigonometric polynomials from few randomly taken samples by Basis Pursuit and greedy algorithms such as Orthogona...
TIT
2008
13 years 5 months ago
2008
Recently, it has been observed that a sparse trigonometric polynomial, i.e. having only a small number of non-zero coefficients, can be reconstructed exactly from a small number o...
SIGPRO
2010
13 years 3 months ago
2010
The recovery of signal parameters from noisy sampled data is a fundamental problem in digital signal processing. In this paper, we consider the following spectral analysis problem...
JCPHY
2011
12 years 8 months ago
2011
This paper is concerned with the fast solution of high frequency electromagnetic scattering problems using the boundary integral formulation. We extend the O(N log N) directional ...
ICIP
2001
IEEE
14 years 7 months ago
2001
IEEE
We consider the template matching problem, in which one wants to find all good enough occurrences of a pattern template P from a larger image I. The current standard of template m...