MichelsonChannel.H

00001 /*!@file Channels/VarianceChannel.H Michelson image contrast */
00002 
00003 // //////////////////////////////////////////////////////////////////// //
00004 // The iLab Neuromorphic Vision C++ Toolkit - Copyright (C) 2000-2005   //
00005 // by the University of Southern California (USC) and the iLab at USC.  //
00006 // See http://iLab.usc.edu for information about this project.          //
00007 // //////////////////////////////////////////////////////////////////// //
00008 // Major portions of the iLab Neuromorphic Vision Toolkit are protected //
00009 // under the U.S. patent ``Computation of Intrinsic Perceptual Saliency //
00010 // in Visual Environments, and Applications'' by Christof Koch and      //
00011 // Laurent Itti, California Institute of Technology, 2001 (patent       //
00012 // pending; application number 09/912,225 filed July 23, 2001; see      //
00013 // http://pair.uspto.gov/cgi-bin/final/home.pl for current status).     //
00014 // //////////////////////////////////////////////////////////////////// //
00015 // This file is part of the iLab Neuromorphic Vision C++ Toolkit.       //
00016 //                                                                      //
00017 // The iLab Neuromorphic Vision C++ Toolkit is free software; you can   //
00018 // redistribute it and/or modify it under the terms of the GNU General  //
00019 // Public License as published by the Free Software Foundation; either  //
00020 // version 2 of the License, or (at your option) any later version.     //
00021 //                                                                      //
00022 // The iLab Neuromorphic Vision C++ Toolkit is distributed in the hope  //
00023 // that it will be useful, but WITHOUT ANY WARRANTY; without even the   //
00024 // implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      //
00025 // PURPOSE.  See the GNU General Public License for more details.       //
00026 //                                                                      //
00027 // You should have received a copy of the GNU General Public License    //
00028 // along with the iLab Neuromorphic Vision C++ Toolkit; if not, write   //
00029 // to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,   //
00030 // Boston, MA 02111-1307 USA.                                           //
00031 // //////////////////////////////////////////////////////////////////// //
00032 //
00033 // Primary maintainer for this file:
00034 // $HeadURL: svn://isvn.usc.edu/software/invt/trunk/saliency/src/Channels/MichelsonChannel.H $
00035 // $Id: MichelsonChannel.H 12962 2010-03-06 02:13:53Z irock $
00036 //
00037 
00038 #ifndef MICHELSONCHANNEL_H_DEFINED
00039 #define MICHELSONCHANNEL_H_DEFINED
00040 
00041 #include "Channels/SingleChannel.H"
00042 
00043 // ######################################################################
00044 //! A Michelson contrast channel, computes Michelson contrast in an image patch
00045 /*! CAUTION: this channel will throw a fatal exception if your
00046   LevelSpec contains more than one level or if that level is different
00047   from the maplevel or if the deltas are non-zero. Michelson contrast
00048   in every map pixel is computed as abs( (La-Li) / (La+Li) ) where La
00049   is the local patch luminance and Li the average image luminance. */
00050 class MichelsonChannel : public SingleChannel
00051 {
00052 public:
00053   //! Construct with standard params.
00054   MichelsonChannel(OptionManager& mgr);
00055 
00056   //! Destructor
00057   virtual ~MichelsonChannel();
00058 
00059   //! overload
00060   virtual bool outputAvailable() const;
00061 
00062 protected:
00063   //! special input function
00064   virtual void doInput(const InputFrame& inframe);
00065 
00066   //! special output function
00067   virtual Image<float> getOutput();
00068 
00069   Image<float> itsMap;  //!< our michelson contrast map
00070 };
00071 
00072 // ######################################################################
00073 /* So things look consistent in everyone's emacs... */
00074 /* Local Variables: */
00075 /* indent-tabs-mode: nil */
00076 /* End: */
00077 
00078 #endif // MICHELSONCHANNEL_H_DEFINED
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