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
|
/*
-----------------------------------------------------------------------
Copyright: 2010-2015, iMinds-Vision Lab, University of Antwerp
2014-2015, CWI, Amsterdam
Contact: astra@uantwerpen.be
Website: http://sf.net/projects/astra-toolbox
This file is part of the ASTRA Toolbox.
The ASTRA Toolbox is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
The ASTRA Toolbox is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with the ASTRA Toolbox. If not, see <http://www.gnu.org/licenses/>.
-----------------------------------------------------------------------
$Id$
*/
#include "astra/Projector3D.h"
namespace astra
{
//----------------------------------------------------------------------------------------
// Default constructor
CProjector3D::CProjector3D() : configCheckData(0)
{
_clear();
}
//----------------------------------------------------------------------------------------
// Destructor
CProjector3D::~CProjector3D()
{
if (m_bIsInitialized) clear();
}
//----------------------------------------------------------------------------------------
// Clear for constructors
void CProjector3D::_clear()
{
m_pProjectionGeometry = NULL;
m_pVolumeGeometry = NULL;
m_bIsInitialized = false;
}
//----------------------------------------------------------------------------------------
// Clear
void CProjector3D::clear()
{
ASTRA_DELETE(m_pProjectionGeometry);
ASTRA_DELETE(m_pVolumeGeometry);
m_bIsInitialized = false;
}
//----------------------------------------------------------------------------------------
// Check
bool CProjector3D::_check()
{
// projection geometry
ASTRA_CONFIG_CHECK(m_pProjectionGeometry, "Projector3D", "ProjectionGeometry3D not initialized.");
ASTRA_CONFIG_CHECK(m_pProjectionGeometry->isInitialized(), "Projector3D", "ProjectionGeometry3D not initialized.");
// volume geometry
ASTRA_CONFIG_CHECK(m_pVolumeGeometry, "Projector3D", "VolumeGeometry3D not initialized.");
ASTRA_CONFIG_CHECK(m_pVolumeGeometry->isInitialized(), "Projector3D", "VolumeGeometry3D not initialized.");
return true;
}
//---------------------------------------------------------------------------------------
// Initialize, use a Config object
bool CProjector3D::initialize(const Config& _cfg)
{
assert(_cfg.self);
return true;
}
/*
bool CProjector3D::initialize(astra::CProjectionGeometry3D *, astra::CVolumeGeometry3D *)
{
ASTRA_ASSERT(false);
return false;
}
*/
//----------------------------------------------------------------------------------------
// Weights of each detector in a projection angle
void CProjector3D::computeProjectionRayWeights(int _iProjection, SPixelWeight* _pfWeightedPixels, int* _piRayStoredPixelCount)
{
int iPixelBufferSize = getProjectionWeightsCount(_iProjection);
int iDetector = 0;
for(iDetector = m_pProjectionGeometry->getDetectorTotCount()-1; iDetector >= 0; --iDetector) {
int iSliceIndex = iDetector / m_pProjectionGeometry->getDetectorColCount();
int iDetectorColIndex = iDetector % m_pProjectionGeometry->getDetectorColCount();
computeSingleRayWeights(_iProjection, // projector index
iSliceIndex, // slice index
iDetectorColIndex, // detector index
&_pfWeightedPixels[iDetector*iPixelBufferSize], // pixel buffer
iPixelBufferSize, // pixel buffer size
_piRayStoredPixelCount[iDetector]); // stored pixel count
}
}
//----------------------------------------------------------------------------------------
} // end namespace
|
