13 search results - page 1 / 3 » Nonequispaced Hyperbolic Cross Fast Fourier Transform |
SIAMNUM
2010
12 years 11 months ago
2010
A straightforward discretisation of problems in d spatial dimensions often leads to an exponential growth in the number of degrees of freedom. Thus, even efficient algorithms like ...
BILDMED
2008
13 years 6 months ago
2008
We propose a method, which treats metal artifact reduction in CT by sinogram restoration as a problem of scattered data interpolation. Corrupted sinogram entries are discarded and ...
ICIP
2010
IEEE
13 years 2 months ago
2010
IEEE
The Fast Fourier Transform (FFT) allows the Discrete Time Fourier Transform (DTFT) to be efficiently sampled on a uniform grid in frequency. In many applications, including Magnet...
JOT
2010
13 years 3 months ago
2010
This paper is part 6 in a series of papers about the Discrete Fourier Transform (DFT) and the Inverse Discrete Fourier Transform (IDFT). The focus of this paper is on correlation....
ICASSP
2011
IEEE
12 years 8 months ago
2011
IEEE
Sparse recovery techniques have been shown to produce very accurate acoustic images, significantly outperforming traditional deconvolution approaches. However, so far these propo...