GistEstimatorFFT.H

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00001 /*!@file Neuro/GistEstimatorFFT.H Extract gist of image using the Fourier Transform */
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: Christian Siagian <siagian at usc dot edu>
00034 // $HeadURL: svn://isvn.usc.edu/software/invt/trunk/saliency/src/Neuro/GistEstimatorFFT.H $
00035 // $Id: GistEstimatorFFT.H 11797 2009-10-06 05:35:58Z kai $
00036 //
00037 
00038 // ######################################################################
00039 /*! Extract gist of image using the Fourier Transform                  */
00040 
00041 #ifndef NEURO_GISTESTIMATORFFT_H_DEFINED
00042 #define NEURO_GISTESTIMATORFFT_H_DEFINED
00043 
00044 #include "Image/Image.H"
00045 #include "Neuro/GistEstimator.H"
00046 #include "Neuro/VisualCortex.H"
00047 #include "Image/FFTWWrapper.H"
00048 #include "GUI/XWinManaged.H"
00049 
00050 class GistEstimatorFFT : public GistEstimatorAdapter
00051 {
00052 public:
00053   //! Constructor
00054   GistEstimatorFFT(OptionManager& mgr,
00055                    const std::string& descrName = "GistEstimatorFFT",
00056                    const std::string& tagName = "GistEstimatorFFT");
00057 
00058   //! Destructor
00059   virtual ~GistEstimatorFFT();
00060 
00061   //! get the gist features
00062   void computeGistFeatureVector(Image<float> img);
00063 
00064   //! visualization of the Fourier Transform of the input image
00065   Image<float> getFftImage();
00066 
00067   //! return the gist feature values
00068   virtual Image<double> getGist();
00069 
00070 protected:
00071   //! Callback for when a new input (retina) frame is available
00072   SIMCALLBACK_DECLARE(GistEstimatorFFT, SimEventRetinaImage);
00073 
00074 private:
00075   void setupFFTW(int w, int h);
00076   void setupGaborMask(int w, int h);
00077   void fftCompute(Image<float> img, double **fftOut);
00078 
00079   void computeFFTgabor(const float stddev, const float period,
00080                        const float theta, uint w, uint h,
00081                        double **gm);
00082 
00083   Image<float> getFftImage(double **res, int w, int h);
00084   Image<float> normalize(Image<float> img);
00085 
00086   //! gist feature vector
00087   Image<double> itsGistVector;
00088 
00089   //! its FFTW wrappers
00090   FFTWWrapper *itsFftw;
00091   double *itsFftwBuffer;
00092   double **itsOutFftwBuffer;
00093 
00094   double ****gaborMask;
00095   Image<float>** gaborMaskImg;
00096   float itsStddev;
00097 
00098   Image<float> itsFftImage;
00099   XWinManaged* xw;
00100 };
00101 
00102 // ######################################################################
00103 /* So things look consistent in everyone's emacs... */
00104 /* Local Variables: */
00105 /* indent-tabs-mode: nil */
00106 /* End: */
00107 
00108 #endif // NEURO_GISTESTIMATORFFT_H_DEFINED
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