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contourlet算法作为二阶小波算法的延续

Contourlet Toolbox Copying Permissions

This software is copyrighted.  You can redistribute it and/or modify it 
under the terms of the GNU General Public License as published by the 
Free Software Foundation.

This software was developed with the support of:
   + A PhD fellowship by the Swiss Federal Institute of Technology (EPFL)
   + The National Science Foundation, Grant CCR-0237633 (CAREER)

Contributors to this effort include:
   + Arthur L. A. da Cunha (University of Illinois at Urbana-Champaign)
   + Minh N. Do (University of Illinois at Urbana-Champaign)
   + Yue Lu (University of Illinois at Urbana-Champaign)
   + Jianping Zhou (University of Illinois at Urbana-Champaign)