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资源说明：A OTF-based phase diversity package
# OPRA
## WHAT IS IT?
OPRA (OTF-based Phase Retrieval Analysis) is a phase retrieval
tool that uses phase diversity. That is, you feed it a few images
-in between which some *phase diversity* has been introduced,
namely some focus- and it returns the corresponding phase.
OPRA specificity includes:
* Instead of minimizing the distance model/measurement in the
image plane, it does it in the OTF plane.
* It can use several basis of modes to reconstruct the phase:
Disk harmonic (the default), Karhuenen-Loeve or Zernike.
* It can also work within the yao framework, which allow the user
to define more complex conditions/systems. In particular, from
v1.5, one can use a set of images to reconstruct the phase
aberration tomography using a set of modes at various altitudes.
OPRA was developed within the framework on the GEMINI MCAO system.
## AUTHORS
OPRA, Francois Rigaut (c) 2010-2011
Authors:
Francois Rigaut frigaut@gemini.edu
Benoit Neichel bneichel@gemini.edu
Damien Gratadour damien.gratadour@obspm.fr
## LICENSE
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details (to receive a copy of the GNU
General Public License, write to the Free Software Foundation, Inc., 675
Mass Ave, Cambridge, MA 02139, USA).
## INSTALLATION
OPRA is just a set of interpreted yorick files. You can easily install from
source (it's all source anyway) using the usual:
yorick -batch make.i
[sudo] make install
Note that if you want to use the yao framework (in particular, the tomography
mode requires it), you will need yao installed.
## TEST IT / USE IT
There are a few test cases in the examples directory. Look at the README
file in this directory for more details.
yorick -i opra_test1.i
* opra_test1.i Is the simplest test case. Using disk harmonics.
* opra_test2.i uses yao, so you'll need yao installed. Same images
and same phase as opra_test1.i.
For the test cases 3,4, and 5 (tomographic cases), you need to
generate the data set before running the analysis:
yorick -i gen_test3_images.i
yorick -i opra_test3.i
(obviously replace 3 by 4 or 5 to run the other cases).
test3 is with 2DMs. test4 is with 3DMs. test5 adds noise to test4.
* opra_test6.i uses images from the Gemini NIRI imager.
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