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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