00001 /*---------------------------------------------------------------------* 00002 | Library QgarLib, graphics analysis and recognition | 00003 | Copyright (C) 2002 Qgar Project, LORIA | 00004 | | 00005 | This library is free software; you can redistribute it and/or | 00006 | modify it under the terms of the GNU Lesser General Public | 00007 | License version 2.1, as published by the Free Software Foundation. | 00008 | | 00009 | This library is distributed in the hope that it will be useful, | 00010 | but WITHOUT ANY WARRANTY; without even the implied warranty of | 00011 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | 00012 | See the GNU Lesser General Public License for more details. | 00013 | | 00014 | The GNU Lesser General Public License is included in the file | 00015 | LICENSE.LGPL, in the root directory of the Qgar packaging. See | 00016 | http://www.gnu.org/licenses/lgpl.html for the terms of the licence. | 00017 | To receive a paper copy, write to the Free Software Foundation, | 00018 | Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. | 00019 | | 00020 | Contact Project Qgar for any information: | 00021 | LORIA - équipe Qgar | 00022 | B.P. 239, 54506 Vandoeuvre-lès-Nancy Cedex, France | 00023 | email: qgar-contact@loria.fr | 00024 | http://www.qgar.org/ | 00025 *---------------------------------------------------------------------*/ 00026 00027 00028 /** 00029 * @file ErodedImage.C 00030 * @brief Implementation of class qgar::ErodedImage. 00031 * 00032 * See file ErodedImage.H for the interface. 00033 * 00034 * @author <a href="mailto:qgar-develop@loria.fr?subject=Qgar fwd Mathieu Baeumler">Mathieu Baeumler</a> 00035 * @date August 5, 2002 17:42 00036 * @since Qgar.2.0 00037 */ 00038 00039 00040 // STL 00041 #include <sstream> 00042 // QGAR 00043 #include <qgarlib/ErodedImage.H> 00044 #include <qgarlib/GenImage.H> 00045 #include <qgarlib/LinErodedImage.H> 00046 #include <qgarlib/QgarErrorDomain.H> 00047 00048 00049 namespace qgar 00050 { 00051 00052 // ------------------------------------------------------------------- 00053 // C O N S T R U C T O R 00054 // ------------------------------------------------------------------- 00055 00056 ErodedImage::ErodedImage(GreyLevelImage& anImg, unsigned int anEroSize) 00057 00058 throw(QgarErrorDomain) 00059 00060 : GreyLevelImage(anImg) 00061 00062 { 00063 int sqsize = (2 * anEroSize) + 1; // Effective mask size 00064 00065 if ((sqsize > anImg.width()) || (sqsize > anImg.height())) 00066 { 00067 std::ostringstream os; 00068 os << "Erosion size [" 00069 << sqsize 00070 << " X " 00071 << sqsize 00072 << "] too large for image [" 00073 << anImg.width() 00074 << " X " 00075 << anImg.height() 00076 << "]"; 00077 throw QgarErrorDomain(__FILE__, __LINE__, 00078 "qgar::ErodedImage::ErodedImage(qgar::GreyLevelImage&, unsigned int)", 00079 os.str()); 00080 } 00081 00082 perform(this, anEroSize); 00083 } 00084 00085 // ------------------------------------------------------------------- 00086 // P U B L I C F U N C T I O N S 00087 // ------------------------------------------------------------------- 00088 00089 void 00090 ErodedImage::perform(GreyLevelImage* anImg, unsigned int anEroSize) 00091 { 00092 LinErodedImage::perform(anImg, QGE_ORIENTATION_HOR, anEroSize); 00093 LinErodedImage::perform(anImg, QGE_ORIENTATION_VER, anEroSize); 00094 } 00095 00096 // ------------------------------------------------------------------- 00097 00098 } // namespace qgar