Rank: 1032 based on 86 downloads (last 30 days) and 1 file submitted
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Bruce Spottiswoode

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23 Feb 2009 2D phase unwrapping algorithms Implementations of the phase quality path following method and Goldstein's branch cut method. Author: Bruce Spottiswoode phase unaliasing, phase unwrapping, image processing 86 4
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3.6 | 5 ratings
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15 Sep 2012 2D phase unwrapping algorithms Implementations of the phase quality path following method and Goldstein's branch cut method. Author: Bruce Spottiswoode Zaman, Tim

Remarkably slow..
15 Sep 2012 2D phase unwrapping algorithms Implementations of the phase quality path following method and Goldstein's branch cut method. Author: Bruce Spottiswoode Zaman, Tim

09 Aug 2012 2D phase unwrapping algorithms Implementations of the phase quality path following method and Goldstein's branch cut method. Author: Bruce Spottiswoode peter

17 Jul 2012 2D phase unwrapping algorithms Implementations of the phase quality path following method and Goldstein's branch cut method. Author: Bruce Spottiswoode Ka, Armin

Hi,
I need a phase unwrapping algorithm to unwrap the interference phase which is bounded between -pi, pi or 0, 2*pi
Thanks for your help.
A
05 Mar 2010 2D phase unwrapping algorithms Implementations of the phase quality path following method and Goldstein's branch cut method. Author: Bruce Spottiswoode Eric

Useful for unwrapping small images, but not for large images. A 510x510 array took 25 minutes on my machine. The following improvements need to be made for larger arrays:

1. Implement the "postponed" list described in Ghiglia and Pritt.
2. Avoid using Matlab's unwrap() function for unwrapping a length-two vector. Instead use Itoh's Method for a length 2 vector explicitly:
D = psi(2)-psi(1);
delta = atan2(sin(D),cos(D);
phi = psi(1) + delta;
3. Resize matrices as vectors

This yields about 20X speed improvement for the 510x510 array size.
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image processing, phase unaliasing, phase unwrapping
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23 Feb 2009 2D phase unwrapping algorithms Implementations of the phase quality path following method and Goldstein's branch cut method. Author: Bruce Spottiswoode phase unaliasing, phase unwrapping, image processing 86 4
  • 3.6
3.6 | 5 ratings

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