Fawkes API  Fawkes Development Version
sharpen.cpp
00001 
00002 /***************************************************************************
00003  *  sharpen.cpp - Implementation of the sharpen filter
00004  *
00005  *  Created: Thu Jun 16 16:13:15 2005
00006  *  Copyright  2005-2012  Tim Niemueller [www.niemueller.de]
00007  ****************************************************************************/
00008 
00009 /*  This program is free software; you can redistribute it and/or modify
00010  *  it under the terms of the GNU General Public License as published by
00011  *  the Free Software Foundation; either version 2 of the License, or
00012  *  (at your option) any later version. A runtime exception applies to
00013  *  this software (see LICENSE.GPL_WRE file mentioned below for details).
00014  *
00015  *  This program is distributed in the hope that it will be useful,
00016  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00017  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00018  *  GNU Library General Public License for more details.
00019  *
00020  *  Read the full text in the LICENSE.GPL_WRE file in the doc directory.
00021  */
00022 
00023 #include <fvfilters/sharpen.h>
00024 
00025 #include <core/exception.h>
00026 
00027 #ifdef HAVE_IPP
00028 #  include <ippi.h>
00029 #elif defined(HAVE_OPENCV)
00030 #  include <cv.h>
00031 #else
00032 #  error "Neither IPP nor OpenCV available"
00033 #endif
00034 
00035 namespace firevision {
00036 #if 0 /* just to make Emacs auto-indent happy */
00037 }
00038 #endif
00039 
00040 /** @class FilterSharpen <fvfilters/sharpen.h>
00041  * Sharpen filter.
00042  * @author Tim Niemueller
00043  */
00044 
00045 /** Constructor. */
00046 FilterSharpen::FilterSharpen()
00047   : Filter("FilterSharpen")
00048 {
00049 }
00050 
00051 
00052 void
00053 FilterSharpen::apply()
00054 {
00055 #if defined(HAVE_IPP)
00056   IppiSize size;
00057   size.width = src_roi[0]->width;
00058   size.height = src_roi[0]->height;
00059 
00060   IppStatus status;
00061 
00062   //                                   base + number of bytes to line y              + pixel bytes
00063   status = ippiFilterSharpen_8u_C1R( src[0] + (src_roi[0]->start.y * src_roi[0]->line_step) + (src_roi[0]->start.x * src_roi[0]->pixel_step), src_roi[0]->line_step,
00064                                      dst + (dst_roi->start.y * dst_roi->line_step) + (dst_roi->start.x * dst_roi->pixel_step), dst_roi->line_step,
00065                                      size );
00066 
00067   if ( status != ippStsNoErr ) {
00068     throw fawkes::Exception("Sharpen filter failed with %i\n", status);
00069   }
00070 #elif defined(HAVE_OPENCV)
00071   if ((dst == NULL) || (dst == src[0])) {
00072     throw fawkes::Exception("OpenCV-based Sobel filter cannot be in-place");
00073   }
00074 
00075   cv::Mat srcm(src_roi[0]->height, src_roi[0]->width, CV_8UC1,
00076                src[0] +
00077                  (src_roi[0]->start.y * src_roi[0]->line_step) +
00078                  (src_roi[0]->start.x * src_roi[0]->pixel_step),
00079                src_roi[0]->line_step);
00080 
00081   cv::Mat dstm(dst_roi->height, dst_roi->width, CV_8UC1,
00082                dst +
00083                  (dst_roi->start.y * dst_roi->line_step) +
00084                  (dst_roi->start.x * dst_roi->pixel_step),
00085                dst_roi->line_step);
00086 
00087   cv::Mat kernel(3, 3, CV_32F);
00088   float *kernel_f = (float *)kernel.ptr();
00089   kernel_f[0] = -0.125; kernel_f[1] = -0.125; kernel_f[2] = -0.125;
00090   kernel_f[3] = -0.125; kernel_f[4] = 2.0;    kernel_f[5] = -0.125;
00091   kernel_f[6] = -0.125; kernel_f[7] = -0.125; kernel_f[8] = -0.125;
00092 
00093   cv::Point kanchor(1, 1);
00094 
00095   cv::filter2D(srcm, dstm, /* ddepth */ -1, kernel, kanchor);
00096 
00097 #endif
00098 
00099 }
00100 
00101 } // end namespace firevision