00001 //=========================================================================== 00002 // The Level-Set Segmentation Library (LSSEG) 00003 // 00004 // 00005 // Copyright (C) 2000-2005 SINTEF ICT, Applied Mathematics, Norway. 00006 // 00007 // This program is free software; you can redistribute it and/or 00008 // modify it under the terms of the GNU General Public License 00009 // as published by the Free Software Foundation version 2 of the License. 00010 // 00011 // This program is distributed in the hope that it will be useful, 00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 // GNU General Public License for more details. 00015 // 00016 // You should have received a copy of the GNU General Public License 00017 // along with this program; if not, write to the Free Software 00018 // Foundation, Inc., 00019 // 59 Temple Place - Suite 330, 00020 // Boston, MA 02111-1307, USA. 00021 // 00022 // Contact information: e-mail: tor.dokken@sintef.no 00023 // SINTEF ICT, Department of Applied Mathematics, 00024 // P.O. Box 124 Blindern, 00025 // 0314 Oslo, Norway. 00026 // 00027 // 00028 // Other licenses are also available for this software, notably licenses 00029 // for: 00030 // - Building commercial software. 00031 // - Building software whose source code you wish to keep private. 00032 // 00033 //=========================================================================== 00034 //=========================================================================== 00035 // 00036 // File: MRBalloonForce.h 00037 // 00038 // Created: Fri Feb 24 13:35:56 2006 00039 // 00040 // Author: Odd A. Andersen <Odd.Andersen@sintef.no> 00041 // 00042 // Revision: $Id: MRBalloonForce.h,v 1.7 2006/11/13 02:29:25 oan Exp $ 00043 // 00044 // Description: 00048 // 00049 //=========================================================================== 00050 00051 #ifndef _MRBALLOONFORCE_H 00052 #define _MRBALLOONFORCE_H 00053 00054 #include "Image.h" 00055 #include "Mask.h" 00056 #include "simple_tools.h" 00057 #include "LevelSetFunction.h" 00058 #include "ForceGenerator.h" // only documentation 00059 #include "errormacros.h" 00060 #include <assert.h> 00061 #include <vector> 00062 00063 namespace lsseg { 00064 00065 //=========================================================================== 00076 class MRBalloonForce : public ForceGenerator 00077 //=========================================================================== 00078 { 00079 public: 00089 MRBalloonForce(double fac, const LevelSetFunction& phi) 00090 : fac_(fac) { update(phi); } 00091 00093 virtual ~MRBalloonForce() {} 00094 00110 virtual void init(const Image<double>* img, const Mask* mask) { 00111 MESSAGE("Warning: neither 'img' nor 'm' used in MRBalloonForce::init()"); 00112 } 00113 00114 virtual void update(const LevelSetFunction& phi) { 00115 double tmp = negative_ratio(phi); 00116 cur_force_ = (tmp > 0) ? fac_ / tmp : 0; 00117 } 00118 virtual double force2D(int x, int y) const { return cur_force_;} 00119 virtual double force3D(int x, int y, int z) const {return cur_force_;} 00120 virtual double force(size_t ix) const {return cur_force_;} 00121 virtual void force(LevelSetFunction& phi, const Mask* mask = 0) const { 00122 phi = cur_force_; 00123 } 00124 00125 private: 00127 const double fac_; 00128 00130 double cur_force_; 00131 00132 inline void report() const; 00133 }; 00134 00135 00136 }; //end namespace lsseg 00137 #endif // _MRBALLOONFORCE_H 00138
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