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The Curvelet transform is a higher dimensional generalization of the
Wavelet transform designed to represent images at different scales and
different angles. Curvelets enjoy two unique mathematical properties,
namely:
• Curved singularities can be well approximated with very few coefficients
and in a non-adaptive manner - hence the name "curvelets."
• Curvelets remain coherent waveforms under the action of the wave equation
in a smooth medium.
More information can be found in the papers below. By releasing
the CurveLab toolbox, we hope to encourage the dissemination of curvelets
to image processing, inverse problems and scientific computing.
The Curvelet.org team: Emmanuel
Candes, Laurent
Demanet, David
Donoho, Lexing
Ying.
Software
CurveLab is a toolbox implementing the Fast Discrete
Curvelet Transform, both in Matlab and C++. The latest version
is 2.1.2
The paper Fast
Discrete Curvelet Transforms explains the curvelet transforms in
detail. Parts of this research were supported by the National
Science Foundation, the Alfred P. Sloan Foundation and the U.S. Department
of Energy.
Non-commercial research use for Academics:
If you intend to use the software solely for non-commercial research
purposes and if you belong to a not-for-profit organization, you are
welcome to download the source code. If you work for a not-for-profit
organization, please register
to sign a license agreement and obtain a download password. For
installation guidelines, please read the user's
guide.
Download
(for Academics only)
If you are thinking of contacting us: please do not email the
webmaster, or the authors, to ask for download instructions, installation
guidelines, or the toolbox itself: everything is provided above. It is
impossible for us to help debug user code not included in Curvelab. We do
not provide tutoring for class projects. Very rarely the servers have
glitches: in that case, please be patient and try again later. It is not
our intention to prevent anyone from downloading the toolbox based on the
country of origin. Thank you.
All other uses, including commercial use:
For any other use of the software including commercial use, or if you
work for a for-profit organization, you will need a commercial
license. In this case, please
and you will be contacted by the Caltech Office of Technology Transfer
(www.ott.caltech.edu). The commercial license includes a free trial
period.
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