CannyModel.H

Go to the documentation of this file.
00001 /*!@file BeoSub/CannyModel.H Simple shape models */
00002 
00003 // //////////////////////////////////////////////////////////////////// //
00004 // The iLab Neuromorphic Vision C++ Toolkit - Copyright (C) 2001 by the //
00005 // 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: Zack Gossman <gossman@usc.edu>
00034 // $HeadURL: svn://isvn.usc.edu/software/invt/trunk/saliency/src/BeoSub/CannyModel.H $
00035 // $Id: CannyModel.H 6990 2006-08-11 18:13:51Z rjpeters $
00036 //
00037 
00038 #ifndef CANNYMODEL_H_DEFINED
00039 #define CANNYMODEL_H_DEFINED
00040 
00041 class XWindow;
00042 #include "Image/Pixels.H"
00043 #include "Image/Image.H"
00044 #include "rutz/shared_ptr.h"
00045 
00046 /*************************************************************************
00047  * NOTES:
00048  *
00049  * -Poblems with threshold values:
00050  *     1) easier to get a "match" for smaller models, so the threshold should take dimensions into account (i.e. larger threshhold needed for larger models)
00051        2) The threshhold, as is, severely limits matching of partly off-image shapes. PERHAPS this could be solved by making all off-image points have a certain distance match. OR, we could change the code to IGNORE off-image points, up to a certain percentage (maybe half)
00052  *
00053  *
00054  ************************************************************************/
00055 
00056 //! The base class for shape models
00057 /*! This base class defines a basic interface by which an shape optimizer
00058 may mathematically represent a shape and get a measurement of how well
00059 the current shape matches with a Canny edge map. */
00060 class ShapeModel {
00061 public:
00062   //! Constructor
00063   /*! Constructor
00064     @param ndims number of dimensions in the model
00065     @param thresh threshold for a shape match
00066     @param debug if true, open an XWindow and show debug drawings. */
00067   ShapeModel(const int ndims, const double thresh, double* dims, const bool debug = false);
00068 
00069   //! Destructor
00070   virtual ~ShapeModel();
00071 
00072   //! Compute distance between model (defined by p) and distance map
00073   /*! Programmer's note: calcDist() is a wrapper around getDist()
00074     which does the actual distance computation. Do not overload
00075     calcDist(), overload getDist() instead. */
00076   double calcDist(double p[], const Image<float>& distMap) const;
00077 
00078   //! Get the distance threshold
00079   double getThreshold() const;
00080 
00081   //! Get the number of dimensions
00082   int getNumDims() const;
00083 
00084   //! Get the dimension vector
00085   double* getDimensions() const;
00086 
00087   //!Set the dimension vector
00088   void setDimensions(double* in);
00089 
00090 protected:
00091   //! get distance value at one location, with optional display
00092   float getDistVal(const double x, const double y, const Image<float>& distMap,
00093                    Image< PixRGB<byte> >& xdisp) const;
00094 
00095 
00096   //! Core of the distance computation
00097   /*! This is a pure virtual function, derived classes need to
00098     implement it. */
00099   virtual float getDist(double p[], const Image<float>& distMap,
00100                         Image< PixRGB<byte> >& xdisp) const = 0;
00101 
00102 private:
00103   int itsNumDims;               //!< number of dimensions describing shape
00104   double itsThreshold;          //!< distance threshold for match
00105   double* itsDimensions;        //!< dimesion vector for the shape model
00106   bool itsDebugMode;            //!< do we want debug displays?
00107   rutz::shared_ptr<XWindow> itsWindow; //!< optional window for display
00108 
00109 };
00110 
00111 
00112 // ######################################################################
00113 //! A Rectangle ShapeModel
00114 class RectangleShape : public ShapeModel {
00115 public:
00116   //! Constructor
00117   RectangleShape(const double thresh, double* dims, const bool debug = false);
00118 
00119   //! Destructor
00120   virtual ~RectangleShape();
00121 
00122 protected:
00123   //! Core of the distance computation
00124   virtual float getDist(double p[], const Image<float>& distMap,
00125                         Image< PixRGB<byte> >& xdisp) const;
00126 };
00127 
00128 
00129 // ######################################################################
00130 //! A Square ShapeModel
00131 
00132 class SquareShape : public ShapeModel {
00133 public:
00134   //! Constructor
00135   SquareShape(const double thresh, double* dims, const bool debug = false);
00136 
00137   //! Destructor
00138   virtual ~SquareShape();
00139 
00140 protected:
00141   //! Core of the distance computation
00142   virtual float getDist(double p[], const Image<float>& distMap,
00143                         Image< PixRGB<byte> >& xdisp) const;
00144 };
00145 
00146 
00147 // ######################################################################
00148 //! An Octagon ShapeModel
00149 
00150 class OctagonShape : public ShapeModel {
00151 public:
00152   //! Constructor
00153   OctagonShape(const double thresh, double* dims, const bool debug = false);
00154 
00155   //! Destructor
00156   virtual ~OctagonShape();
00157 
00158 protected:
00159   //! Core of the distance computation
00160   virtual float getDist(double p[], const Image<float>& distMap,
00161                         Image< PixRGB<byte> >& xdisp) const;
00162 };
00163 
00164 
00165 // ######################################################################
00166 //! A Circle ShapeModel
00167 
00168 class CircleShape : public ShapeModel {
00169 public:
00170   //! Constructor
00171   CircleShape(const double thresh, double* dims, const bool debug = false);
00172 
00173   //! Destructor
00174   virtual ~CircleShape();
00175 
00176 protected:
00177   //! Core of the distance computation
00178   virtual float getDist(double p[], const Image<float>& distMap,
00179                         Image< PixRGB<byte> >& xdisp) const;
00180 };
00181 
00182 
00183 // ######################################################################
00184 //! A Parallel-lines ShapeModel
00185 class ParallelShape : public ShapeModel {
00186 public:
00187   //! Constructor
00188   ParallelShape(const double thresh, double* dims, const bool debug = false);
00189 
00190   //! Destructor
00191   virtual ~ParallelShape();
00192 
00193 protected:
00194   //! Core of the distance computation
00195   virtual float getDist(double p[], const Image<float>& distMap,
00196                         Image< PixRGB<byte> >& xdisp) const;
00197 };
00198 
00199 #endif
00200 
00201 // ######################################################################
00202 /* So things look consistent in everyone's emacs... */
00203 /* Local Variables: */
00204 /* indent-tabs-mode: nil */
00205 /* End: */
Generated on Sun May 8 08:40:20 2011 for iLab Neuromorphic Vision Toolkit by  doxygen 1.6.3