1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * The name of the copyright holders may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the Intel Corporation or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
//M*/
#include "precomp.hpp"
using namespace cv;
using namespace cv::gpu;
#if !defined (HAVE_CUDA) || defined (CUDA_DISABLER)
cv::gpu::StereoBM_GPU::StereoBM_GPU() { throw_nogpu(); }
cv::gpu::StereoBM_GPU::StereoBM_GPU(int, int, int) { throw_nogpu(); }
bool cv::gpu::StereoBM_GPU::checkIfGpuCallReasonable() { throw_nogpu(); return false; }
void cv::gpu::StereoBM_GPU::operator() ( const GpuMat&, const GpuMat&, GpuMat&, Stream&) { throw_nogpu(); }
#else /* !defined (HAVE_CUDA) */
namespace cv { namespace gpu { namespace device
{
namespace stereobm
{
void stereoBM_GPU(const PtrStepSzb& left, const PtrStepSzb& right, const PtrStepSzb& disp, int ndisp, int winsz, const PtrStepSz<unsigned int>& minSSD_buf, cudaStream_t & stream);
void prefilter_xsobel(const PtrStepSzb& input, const PtrStepSzb& output, int prefilterCap /*= 31*/, cudaStream_t & stream);
void postfilter_textureness(const PtrStepSzb& input, int winsz, float avgTexturenessThreshold, const PtrStepSzb& disp, cudaStream_t & stream);
}
}}}
namespace
{
const float defaultAvgTexThreshold = 3;
}
cv::gpu::StereoBM_GPU::StereoBM_GPU()
: preset(BASIC_PRESET), ndisp(DEFAULT_NDISP), winSize(DEFAULT_WINSZ), avergeTexThreshold(defaultAvgTexThreshold)
{
}
cv::gpu::StereoBM_GPU::StereoBM_GPU(int preset_, int ndisparities_, int winSize_)
: preset(preset_), ndisp(ndisparities_), winSize(winSize_), avergeTexThreshold(defaultAvgTexThreshold)
{
const int max_supported_ndisp = 1 << (sizeof(unsigned char) * 8);
CV_Assert(0 < ndisp && ndisp <= max_supported_ndisp);
CV_Assert(ndisp % 8 == 0);
CV_Assert(winSize % 2 == 1);
}
bool cv::gpu::StereoBM_GPU::checkIfGpuCallReasonable()
{
if (0 == getCudaEnabledDeviceCount())
return false;
DeviceInfo device_info;
if (device_info.majorVersion() > 1 || device_info.multiProcessorCount() > 16)
return true;
return false;
}
namespace
{
void stereo_bm_gpu_operator( GpuMat& minSSD, GpuMat& leBuf, GpuMat& riBuf, int preset, int ndisp, int winSize, float avergeTexThreshold, const GpuMat& left, const GpuMat& right, GpuMat& disparity, cudaStream_t stream)
{
using namespace ::cv::gpu::device::stereobm;
CV_Assert(left.rows == right.rows && left.cols == right.cols);
CV_Assert(left.type() == CV_8UC1);
CV_Assert(right.type() == CV_8UC1);
disparity.create(left.size(), CV_8U);
minSSD.create(left.size(), CV_32S);
GpuMat le_for_bm = left;
GpuMat ri_for_bm = right;
if (preset == StereoBM_GPU::PREFILTER_XSOBEL)
{
leBuf.create( left.size(), left.type());
riBuf.create(right.size(), right.type());
prefilter_xsobel( left, leBuf, 31, stream);
prefilter_xsobel(right, riBuf, 31, stream);
le_for_bm = leBuf;
ri_for_bm = riBuf;
}
stereoBM_GPU(le_for_bm, ri_for_bm, disparity, ndisp, winSize, minSSD, stream);
if (avergeTexThreshold)
postfilter_textureness(le_for_bm, winSize, avergeTexThreshold, disparity, stream);
}
}
void cv::gpu::StereoBM_GPU::operator() ( const GpuMat& left, const GpuMat& right, GpuMat& disparity, Stream& stream)
{
stereo_bm_gpu_operator(minSSD, leBuf, riBuf, preset, ndisp, winSize, avergeTexThreshold, left, right, disparity, StreamAccessor::getStream(stream));
}
#endif /* !defined (HAVE_CUDA) */