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Vilnis Liepins

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23 Sep 2014 Screenshot Extended DFT Program EDFT produce high-resolution N-point DFT for N greater than the length of data vector. Author: Vilnis Liepins spectral analysis, fft, dft, high resolution, extrapolation, gapped data 67 13
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11 Feb 2014 Extended DFT Program EDFT produce high-resolution N-point DFT for N greater than the length of data vector. Author: Vilnis Liepins

Good question. Like as FFT<>IFFT, also EDFT<>IFFT is a pair of DFTs adequately connecting two domains. Unlike FFT, the EDFT adapts to the frequency domain (see details on site http://arxiv.org/abs/1303.2033) and this leads to data extrapolation. Thus, "Super Resolution" is dictated by the known laws physics, from where the longer data, the higher the resolution. Thanks.

01 Feb 2012 Extended DFT Program EDFT produce high-resolution N-point DFT for N greater than the length of data vector. Author: Vilnis Liepins

Hi,
See this math as an example: http://www.c-f-systems.com/Docs/CFS-245IntegralLeastSquares.pdf

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01 Jul 2014 Extended DFT Program EDFT produce high-resolution N-point DFT for N greater than the length of data vector. Author: Vilnis Liepins Alfonso

It did the job perfectly

11 Feb 2014 Extended DFT Program EDFT produce high-resolution N-point DFT for N greater than the length of data vector. Author: Vilnis Liepins Vilnis Liepins

Good question. Like as FFT<>IFFT, also EDFT<>IFFT is a pair of DFTs adequately connecting two domains. Unlike FFT, the EDFT adapts to the frequency domain (see details on site http://arxiv.org/abs/1303.2033) and this leads to data extrapolation. Thus, "Super Resolution" is dictated by the known laws physics, from where the longer data, the higher the resolution. Thanks.

03 Feb 2014 Extended DFT Program EDFT produce high-resolution N-point DFT for N greater than the length of data vector. Author: Vilnis Liepins Royi Avital

Hello,
This is great a great technique.
I'd be happy if you explain more clearly the intuition behind the "Super Resolution" in it.

Thank You.

15 Jan 2013 Extended DFT Program EDFT produce high-resolution N-point DFT for N greater than the length of data vector. Author: Vilnis Liepins Sean

in the function nedft.m I am getting an error:

Undefined function 'finite' for input arguments of type 'double'.

Error in NEDFT (line 119)
if sum(~all(finite(X)))|sum(~all(finite(tk)))|sum(~all(finite(fn))),

Documentation (2012a) says:

Function finite Being Removed

The finite function is obsolete. Use of the finite function now causes an error in MATLAB.

Compatibility Considerations

Replace all instances of finite with isfinite

22 May 2012 Extended DFT Program EDFT produce high-resolution N-point DFT for N greater than the length of data vector. Author: Vilnis Liepins Jon Griffiths

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