Fawkes API
Fawkes Development Version
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00001 00002 /*************************************************************************** 00003 * erosion.cpp - implementation of morphological erosion filter 00004 * 00005 * Created: Fri May 26 12:13:22 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 <filters/morphology/erosion.h> 00025 00026 #include <fvutils/color/yuv.h> 00027 #include <core/exception.h> 00028 00029 #include <cstddef> 00030 #include <ippi.h> 00031 00032 namespace firevision { 00033 #if 0 /* just to make Emacs auto-indent happy */ 00034 } 00035 #endif 00036 00037 /** @class FilterErosion <filters/morphology/erosion.h> 00038 * Morphological erosion. 00039 * 00040 * @author Tim Niemueller 00041 */ 00042 00043 /** Constructor. */ 00044 FilterErosion::FilterErosion() 00045 : MorphologicalFilter("Morphological Erosion") 00046 { 00047 } 00048 00049 00050 void 00051 FilterErosion::apply() 00052 { 00053 IppStatus status; 00054 00055 if ( se == NULL ) { 00056 // standard 3x3 erosion 00057 00058 IppiSize size; 00059 size.width = src_roi[0]->width - 2; 00060 size.height = src_roi[0]->height - 2; 00061 00062 00063 if ( (dst == NULL) || (dst == src[0]) ) { 00064 // In-place 00065 status = ippiErode3x3_8u_C1IR(src[0] + ((src_roi[0]->start.y + 1) * src_roi[0]->line_step) + ((src_roi[0]->start.x + 1) * src_roi[0]->pixel_step), 00066 src_roi[0]->line_step, 00067 size); 00068 00069 } else { 00070 status = ippiErode3x3_8u_C1R(src[0] + ((src_roi[0]->start.y + 1) * src_roi[0]->line_step) + ((src_roi[0]->start.x + 1) * src_roi[0]->pixel_step), 00071 src_roi[0]->line_step, 00072 dst + ((dst_roi->start.y + 1) * dst_roi->line_step) + ((dst_roi->start.x + 1) * dst_roi->pixel_step), 00073 dst_roi->line_step, 00074 size); 00075 00076 yuv422planar_copy_uv(src[0], dst, 00077 src_roi[0]->image_width, src_roi[0]->image_height, 00078 src_roi[0]->start.x, src_roi[0]->start.y, 00079 src_roi[0]->width, src_roi[0]->height ); 00080 } 00081 } else { 00082 // we have a custom SE 00083 00084 IppiSize size; 00085 size.width = src_roi[0]->width - se_width; 00086 size.height = src_roi[0]->height - se_height; 00087 00088 IppiSize mask_size = { se_width, se_height }; 00089 IppiPoint mask_anchor = { se_anchor_x, se_anchor_y }; 00090 00091 if ( (dst == NULL) || (dst == src[0]) ) { 00092 // In-place 00093 status = ippiErode_8u_C1IR(src[0] + ((src_roi[0]->start.y + (se_height / 2)) * src_roi[0]->line_step) + ((src_roi[0]->start.x + (se_width / 2)) * src_roi[0]->pixel_step), 00094 src_roi[0]->line_step, 00095 size, 00096 se, mask_size, mask_anchor); 00097 00098 //std::cout << "in-place operation ended with status " << status << std::endl; 00099 00100 } else { 00101 status = ippiErode_8u_C1R(src[0] + ((src_roi[0]->start.y + (se_height / 2)) * src_roi[0]->line_step) + ((src_roi[0]->start.x + (se_width / 2)) * src_roi[0]->pixel_step), 00102 src_roi[0]->line_step, 00103 dst + ((dst_roi->start.y + (se_height / 2)) * dst_roi->line_step) + ((dst_roi->start.x + (se_width / 2)) * dst_roi->pixel_step), 00104 dst_roi->line_step, 00105 size, 00106 se, mask_size, mask_anchor); 00107 00108 // std::cout << "NOT in-place operation ended with status " << status << std::endl; 00109 00110 yuv422planar_copy_uv(src[0], dst, 00111 src_roi[0]->image_width, src_roi[0]->image_height, 00112 src_roi[0]->start.x, src_roi[0]->start.y, 00113 src_roi[0]->width, src_roi[0]->height ); 00114 } 00115 00116 } 00117 00118 if ( status != ippStsNoErr ) { 00119 throw fawkes::Exception("Morphological erosion failed with %i\n", status); 00120 } 00121 00122 } 00123 00124 } // end namespace firevision