Fawkes API  Fawkes Development Version
tophat_closing.cpp
00001 
00002 /***************************************************************************
00003  *  tophat_closing.cpp - implementation of morphological tophat closing
00004  *
00005  *  Created: Sat Jun 10 16:21:30 2006
00006  *  Copyright  2005-2007  Tim Niemueller [www.niemueller.de]
00007  *
00008  ****************************************************************************/
00009 
00010 /*  This program is free software; you can redistribute it and/or modify
00011  *  it under the terms of the GNU General Public License as published by
00012  *  the Free Software Foundation; either version 2 of the License, or
00013  *  (at your option) any later version. A runtime exception applies to
00014  *  this software (see LICENSE.GPL_WRE file mentioned below for details).
00015  *
00016  *  This program is distributed in the hope that it will be useful,
00017  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00018  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019  *  GNU Library General Public License for more details.
00020  *
00021  *  Read the full text in the LICENSE.GPL_WRE file in the doc directory.
00022  */
00023 
00024 #include <core/exception.h>
00025 
00026 #include <fvfilters/morphology/tophat_closing.h>
00027 #include <fvfilters/morphology/segenerator.h>
00028 #include <fvfilters/morphology/closing.h>
00029 #include <fvfilters/difference.h>
00030 
00031 #include <cstddef>
00032 
00033 namespace firevision {
00034 #if 0 /* just to make Emacs auto-indent happy */
00035 }
00036 #endif
00037 
00038 /** Image that we subtract from */
00039 const unsigned int FilterTophatClosing::SUBTRACTFROM = 0;
00040 /** Image to filter. */
00041 const unsigned int FilterTophatClosing::FILTERIMAGE  = 1;
00042 
00043 #define ERROR(m) {                                                      \
00044     fawkes::Exception e("FilterTophatClosing failed");                          \
00045     e.append("Function: %s", __FUNCTION__);                             \
00046     e.append("Message:  %s", m);                                        \
00047     throw e;                                                            \
00048   }
00049 
00050 /** @class FilterTophatClosing <fvfilters/morphology/tophat_closing.h>
00051  * Morphological tophat closing.
00052  * @author Tim Niemueller
00053  */
00054 
00055 /** Constructor. */
00056 FilterTophatClosing::FilterTophatClosing()
00057   : MorphologicalFilter("Morphological Tophat Closing")
00058 {
00059   closing  = new FilterClosing();
00060   diff     = new FilterDifference();
00061 
00062   src[SUBTRACTFROM] = src[FILTERIMAGE] = dst = NULL;
00063   src_roi[SUBTRACTFROM] = src_roi[FILTERIMAGE] = dst_roi = NULL;
00064 }
00065 
00066 
00067 /** Destructor. */
00068 FilterTophatClosing::~FilterTophatClosing()
00069 {
00070   delete closing;
00071   delete diff;
00072 }
00073 
00074 
00075 void
00076 FilterTophatClosing::apply()
00077 {
00078   if ( dst == NULL ) ERROR("dst == NULL");
00079   if ( src[SUBTRACTFROM] == NULL ) ERROR("src[SUBTRACTFROM] == NULL");
00080   if ( src[FILTERIMAGE] == NULL ) ERROR("src[FILTERIMAGE] == NULL");
00081   if ( *(src_roi[SUBTRACTFROM]) != *(src_roi[FILTERIMAGE]) ) ERROR("marker and mask ROI differ");
00082 
00083   closing->set_structuring_element( se, se_width, se_height, se_anchor_x, se_anchor_y );
00084 
00085   closing->set_src_buffer( src[FILTERIMAGE], src_roi[FILTERIMAGE] );
00086   closing->set_dst_buffer( dst, dst_roi );
00087 
00088   diff->set_src_buffer( src[SUBTRACTFROM], src_roi[SUBTRACTFROM], 1 );
00089   diff->set_src_buffer( dst, dst_roi, 0 );
00090   diff->set_dst_buffer( dst, dst_roi );
00091 
00092   closing->apply();
00093   diff->apply();
00094 }
00095 
00096 } // end namespace firevision