FlickerNBackChannel.H

Go to the documentation of this file.
00001 /*!@file Channels/FlickerNBackChannel.H */
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: David J. Berg <dberg@usc.edu>
00034 // $HeadURL: svn://isvn.usc.edu/software/invt/trunk/saliency/src/Channels/FlickerNBackChannel.H $
00035 
00036 #ifndef FLICKERNBACKCHANNEL_H_DEFINED
00037 #define FLICKERNBACKCHANNEL_H_DEFINED
00038 
00039 #include "Channels/GaussianPyrChannel.H"
00040 #include "Util/SimTime.H"
00041 #include <deque>
00042 
00043 // ######################################################################
00044 //! A temporal flicker channel.
00045 /*! This channel just keeps a memory trace of the previous N frames
00046   and then does a basic center-surround processing on the difference
00047   between current and last memorized input. The time constant
00048   determines how the memorized input should be updated when a new
00049   input arrives. */
00050 class FlickerNBackChannel : public GaussianPyrChannel
00051 {
00052 public:
00053   //! Construct with standard specs.
00054   FlickerNBackChannel(OptionManager& mgr);
00055 
00056   //! Destructor
00057   virtual ~FlickerNBackChannel();
00058 
00059   //! Reset FlickerNBackChannel
00060   /*! See the base function in ModelComponent.H for info. */
00061   virtual void reset1();
00062 
00063 protected:
00064   //! FlickerNBackChannel requires only luminance input.
00065   virtual void doInput(const InputFrame& inframe);
00066 
00067   /*! Queue length of the channel, in seconds. This
00068     is used to determine the length of our memory. */
00069   NModelParam<SimTime> itsQueueLength;
00070 
00071 private:
00072   class ImageHolder
00073   {
00074   public:
00075     ImageHolder(const Image<float>& input, const SimTime& inputtime) :
00076       itsImage(input), itsTime(inputtime) { };
00077     const SimTime time() const {return itsTime; };
00078     const Image<float> image() const {return itsImage; };
00079   private:
00080     const Image<float> itsImage;
00081     const SimTime      itsTime;
00082   };
00083   
00084   std::deque<ImageHolder> itsQueue;
00085 };
00086 // ######################################################################
00087 /* So things look consistent in everyone's emacs... */
00088 /* Local Variables: */
00089 /* indent-tabs-mode: nil */
00090 /* End: */
00091 
00092 #endif // FLICKERCHANNEL_H_DEFINED
Generated on Sun May 8 08:40:21 2011 for iLab Neuromorphic Vision Toolkit by  doxygen 1.6.3