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
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