Fawkes API  Fawkes Development Version
hipass.cpp
1 
2 /***************************************************************************
3  * hipass.cpp - Implementation of a generic hipass filter
4  *
5  * Created: Thu Jun 16 17:12:16 2005
6  * Copyright 2005-2012 Tim Niemueller [www.niemueller.de]
7  ****************************************************************************/
8 
9 /* This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version. A runtime exception applies to
13  * this software (see LICENSE.GPL_WRE file mentioned below for details).
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18  * GNU Library General Public License for more details.
19  *
20  * Read the full text in the LICENSE.GPL_WRE file in the doc directory.
21  */
22 
23 #include <core/exception.h>
24 #include <fvfilters/hipass.h>
25 
26 #ifdef HAVE_IPP
27 # include <ippi.h>
28 #elif defined(HAVE_OPENCV)
29 # if CV_MAJOR_VERSION < 2 || (CV_MAJOR_VERSION == 2 && CV_MINOR_VERSION < 4)
30 # include <opencv/cv.h>
31 # endif
32 # include <opencv/cv.hpp>
33 #else
34 # error "Neither IPP nor OpenCV available"
35 #endif
36 
37 namespace firevision {
38 
39 /** @class FilterHipass <fvfilters/hipass.h>
40  * Hipass filter.
41  */
42 
43 /** Constructor. */
44 FilterHipass::FilterHipass() : Filter("FilterHipass")
45 {
46 }
47 
48 void
50 {
51 #if defined(HAVE_IPP)
52  IppiSize size;
53  size.width = src_roi[0]->width;
54  size.height = src_roi[0]->height;
55 
56  IppStatus status;
57 
58  // base + number of bytes to line y + pixel bytes
59  status = ippiFilterHipass_8u_C1R(src[0] + (src_roi[0]->start.y * src_roi[0]->line_step)
60  + (src_roi[0]->start.x * src_roi[0]->pixel_step),
61  src_roi[0]->line_step,
65  size,
66  ippMskSize3x3);
67 
68  if (status != ippStsNoErr) {
69  throw fawkes::Exception("Hipass filter failed with %i\n", status);
70  }
71 
72 #elif defined(HAVE_OPENCV)
73  cv::Mat srcm(src_roi[0]->height,
74  src_roi[0]->width,
75  CV_8UC1,
76  src[0] + (src_roi[0]->start.y * src_roi[0]->line_step)
77  + (src_roi[0]->start.x * src_roi[0]->pixel_step),
78  src_roi[0]->line_step);
79 
80  if (dst == NULL) {
81  dst = src[0];
82  dst_roi = src_roi[0];
83  }
84 
85  cv::Mat dstm(dst_roi->height,
86  dst_roi->width,
87  CV_8UC1,
91 
92  cv::Mat kernel(3, 3, CV_32F);
93  float * kernel_f = (float *)kernel.ptr();
94  kernel_f[0] = -1;
95  kernel_f[1] = -1;
96  kernel_f[2] = -1;
97  kernel_f[3] = -1;
98  kernel_f[4] = 8;
99  kernel_f[5] = -1;
100  kernel_f[6] = -1;
101  kernel_f[7] = -1;
102  kernel_f[8] = -1;
103 
104  cv::Point kanchor(1, 1);
105 
106  cv::filter2D(srcm, dstm, /* ddepth */ -1, kernel, kanchor);
107 #endif
108 }
109 
110 } // end namespace firevision
firevision::ROI::width
unsigned int width
ROI width.
Definition: roi.h:121
firevision::Filter::src
unsigned char ** src
Source buffers, dynamically allocated by Filter ctor.
Definition: filter.h:70
firevision::FilterHipass::FilterHipass
FilterHipass()
Constructor.
Definition: hipass.cpp:47
firevision::ROI::height
unsigned int height
ROI height.
Definition: roi.h:123
firevision::Filter::src_roi
ROI ** src_roi
Source ROIs, dynamically allocated by Filter ctor.
Definition: filter.h:75
fawkes::upoint_t::y
unsigned int y
y coordinate
Definition: types.h:36
firevision::ROI::pixel_step
unsigned int pixel_step
pixel step
Definition: roi.h:131
firevision::Filter::dst_roi
ROI * dst_roi
Destination ROI.
Definition: filter.h:77
firevision::ROI::start
fawkes::upoint_t start
ROI start.
Definition: roi.h:119
firevision::ROI::line_step
unsigned int line_step
line step
Definition: roi.h:129
fawkes::upoint_t::x
unsigned int x
x coordinate
Definition: types.h:35
firevision::FilterHipass::apply
virtual void apply()
Definition: hipass.cpp:52
firevision::Filter::dst
unsigned char * dst
Destination buffer.
Definition: filter.h:72
fawkes::Exception
Definition: exception.h:39