DirectionChannel.C

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00001 /*!@file Channels/DirectionChannel.C */
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/DirectionChannel.C $
00035 // $Id: DirectionChannel.C 8195 2007-03-30 04:34:07Z rjpeters $
00036 //
00037 
00038 #ifndef DIRECTIONCHANNEL_C_DEFINED
00039 #define DIRECTIONCHANNEL_C_DEFINED
00040 
00041 #include "Channels/DirectionChannel.H"
00042 
00043 #include "Channels/ChannelOpts.H"
00044 #include "Component/OptionManager.H"
00045 #include "Image/ImageSetOps.H"
00046 #include "Image/MathOps.H"
00047 #include "Util/sformat.H"
00048 #include "rutz/compat_cmath.h" // for M_PI
00049 #include "rutz/trace.h"
00050 
00051 // ######################################################################
00052 // DirectionChannel member definitions:
00053 // ######################################################################
00054 
00055 // ######################################################################
00056 DirectionChannel::DirectionChannel(OptionManager& mgr,
00057                                    const uint dirIndex,
00058                                    const double direction,
00059                                    const PyramidType type) :
00060   SingleChannel(mgr, "", "", MOTION,
00061                 rutz::make_shared(new ReichardtPyrBuilder<float>
00062                            (cos(direction * M_PI / 180.0),
00063                             -sin(direction * M_PI / 180.0),
00064                             type, direction + 90.0))),
00065   itsIndex("DirectionChannelIndex", this, dirIndex),
00066   itsDirection("DirectionChannelDirection", this, direction),
00067   itsTakeSqrt(&OPT_DirectionChannelTakeSqrt, this),
00068   itsThresh(&OPT_DirectionChannelLowThresh, this)
00069 {
00070 GVX_TRACE(__PRETTY_FUNCTION__);
00071   itsTakeAbs.setVal(true);
00072   itsNormalizeOutput.setVal(true);
00073   itsScaleNoiseToMax.setVal(true);
00074   itsLowThresh.setVal(itsThresh.getVal());  // kill small values in pyramid
00075   itsRectifyPyramid.setVal(true); // kill negative values in pyramid
00076 
00077   setDescriptiveName(sformat("Direction(%d)", int(direction)));
00078   setTagName(sformat("dir_%d", dirIndex));
00079 }
00080 
00081 // ######################################################################
00082 void DirectionChannel::start2()
00083 {
00084 GVX_TRACE(__PRETTY_FUNCTION__);
00085   itsLowThresh.setVal(itsThresh.getVal());  // kill small values in pyramid
00086 }
00087 
00088 // ######################################################################
00089 DirectionChannel::~DirectionChannel()
00090 {
00091 GVX_TRACE(__PRETTY_FUNCTION__);
00092 }
00093 
00094 // ######################################################################
00095 ImageSet<float> DirectionChannel::
00096 computePyramid(const Image<float>& bwimg,
00097                const rutz::shared_ptr<PyramidCache<float> >& cache)
00098 {
00099 GVX_TRACE(__PRETTY_FUNCTION__);
00100 
00101   // get the pyramid as usual:
00102   ImageSet<float> py = SingleChannel::computePyramid(bwimg, cache);
00103 
00104   // do we want to take the sqrt() of it?
00105   if (itsTakeSqrt.getVal()) doSqrt(py);
00106 
00107   return py;
00108 }
00109 
00110 // ######################################################################
00111 /* So things look consistent in everyone's emacs... */
00112 /* Local Variables: */
00113 /* indent-tabs-mode: nil */
00114 /* End: */
00115 
00116 #endif // DIRECTIONCHANNEL_C_DEFINED
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