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 # include <opencv2/opencv.hpp>
30 #else
31 # error "Neither IPP nor OpenCV available"
32 #endif
33 
34 namespace firevision {
35 
36 /** @class FilterHipass <fvfilters/hipass.h>
37  * Hipass filter.
38  */
39 
40 /** Constructor. */
42 {
43 }
44 
45 void
47 {
48 #if defined(HAVE_IPP)
49  IppiSize size;
50  size.width = src_roi[0]->width;
51  size.height = src_roi[0]->height;
52 
53  IppStatus status;
54 
55  // base + number of bytes to line y + pixel bytes
56  status = ippiFilterHipass_8u_C1R(src[0] + (src_roi[0]->start.y * src_roi[0]->line_step)
57  + (src_roi[0]->start.x * src_roi[0]->pixel_step),
58  src_roi[0]->line_step,
62  size,
63  ippMskSize3x3);
64 
65  if (status != ippStsNoErr) {
66  throw fawkes::Exception("Hipass filter failed with %i\n", status);
67  }
68 
69 #elif defined(HAVE_OPENCV)
70  cv::Mat srcm(src_roi[0]->height,
71  src_roi[0]->width,
72  CV_8UC1,
73  src[0] + (src_roi[0]->start.y * src_roi[0]->line_step)
74  + (src_roi[0]->start.x * src_roi[0]->pixel_step),
75  src_roi[0]->line_step);
76 
77  if (dst == NULL) {
78  dst = src[0];
79  dst_roi = src_roi[0];
80  }
81 
82  cv::Mat dstm(dst_roi->height,
83  dst_roi->width,
84  CV_8UC1,
88 
89  cv::Mat kernel(3, 3, CV_32F);
90  float * kernel_f = (float *)kernel.ptr();
91  kernel_f[0] = -1;
92  kernel_f[1] = -1;
93  kernel_f[2] = -1;
94  kernel_f[3] = -1;
95  kernel_f[4] = 8;
96  kernel_f[5] = -1;
97  kernel_f[6] = -1;
98  kernel_f[7] = -1;
99  kernel_f[8] = -1;
100 
101  cv::Point kanchor(1, 1);
102 
103  cv::filter2D(srcm, dstm, /* ddepth */ -1, kernel, kanchor);
104 #endif
105 }
106 
107 } // end namespace firevision
Base class for exceptions in Fawkes.
Definition: exception.h:36
virtual void apply()
Apply the filter.
Definition: hipass.cpp:46
FilterHipass()
Constructor.
Definition: hipass.cpp:41
Filter interface.
Definition: filter.h:33
ROI ** src_roi
Source ROIs, dynamically allocated by Filter ctor.
Definition: filter.h:66
unsigned char ** src
Source buffers, dynamically allocated by Filter ctor.
Definition: filter.h:61
unsigned char * dst
Destination buffer.
Definition: filter.h:63
ROI * dst_roi
Destination ROI.
Definition: filter.h:68
unsigned int height
ROI height.
Definition: roi.h:119
fawkes::upoint_t start
ROI start.
Definition: roi.h:115
unsigned int line_step
line step
Definition: roi.h:125
unsigned int width
ROI width.
Definition: roi.h:117
unsigned int pixel_step
pixel step
Definition: roi.h:127
unsigned int x
x coordinate
Definition: types.h:36
unsigned int y
y coordinate
Definition: types.h:37