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Phase Unwrapping Algorithms?
| Phase Unwrapping Algorithms? [message #7456] |
Tue, 19 November 1996 00:00 |
wsryu
Messages: 4
Registered: September 1996
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Junior Member |
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Hello:
I am interesting in phase unwrapping algorithms which can handle noisy
data. I understand this to be a common procedure when doing FFT analysis
of interference patterns, and was wondering if anyone has implemented such
routines in IDL.
For example:
Let's say we have a 2D matrix of complex data a+bi and would like to
extract the phase value. A simple way would be to take arctan (b/a) but a
problem exists because arctan is modulo 2PI. The data often gets
"wrapped."
Even if not implemented in IDL, I would be curious to hear about peoples
favorite methods.
Sincerely,
-will ryu
--
William Ryu
wsryu@husc.harvard.edu / Harvard University Biophysics / Paradise-Hell
ryu@risvax.rowland.org / Rowland Institute for Science, Inc.
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