summaryrefslogtreecommitdiffstats
path: root/include/astra/BackProjectionAlgorithm.h
blob: dd67359e8fe692d4b71dda497de7c9c21a329642 (plain)
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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
/*
-----------------------------------------------------------------------
Copyright: 2010-2016, iMinds-Vision Lab, University of Antwerp
           2014-2016, CWI, Amsterdam

Contact: astra@uantwerpen.be
Website: http://www.astra-toolbox.com/

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/>.

-----------------------------------------------------------------------
*/

#ifndef _INC_ASTRA_BACKPROJECTIONALGORITHM
#define _INC_ASTRA_BACKPROJECTIONALGORITHM

#include "Globals.h"
#include "Config.h"

#include "Algorithm.h"
#include "ReconstructionAlgorithm2D.h"

#include "Projector2D.h"
#include "Float32ProjectionData2D.h"
#include "Float32VolumeData2D.h"

#include "DataProjector.h"

namespace astra {

/**
 * \brief
 * This class performs an unfiltered backprojection.
 *
 * \par XML Configuration
 * \astra_xml_item{ProjectorId, integer, Identifier of a projector as it is stored in the ProjectorManager.}
 * \astra_xml_item{ProjectionDataId, integer, Identifier of a projection data object as it is stored in the DataManager.}
 * \astra_xml_item{ReconstructionDataId, integer, Identifier of a volume data object as it is stored in the DataManager.}
 * \astra_xml_item_option{ReconstructionMaskId, integer, not used, Identifier of a volume data object that acts as a reconstruction mask. 1 = reconstruct on this pixel. 0 = don't reconstruct on this pixel.}
 * \astra_xml_item_option{SinogramMaskId, integer, not used, Identifier of a projection data object that acts as a projection mask. 1 = reconstruct using this ray. 0 = don't use this ray while reconstructing.}
 *
 */
class _AstraExport CBackProjectionAlgorithm : public CReconstructionAlgorithm2D {

protected:

	/** Init stuff
	 */
	virtual void _init();

	/** Initial clearing. Only to be used by constructors.
	 */
	virtual void _clear();

	/** Check the values of this object.  If everything is ok, the object can be set to the initialized state.
	 * The following statements are then guaranteed to hold:
	 * - valid projector
	 * - valid data objects
	 */
	virtual bool _check();

public:
	
	// type of the algorithm, needed to register with CAlgorithmFactory
	static std::string type;
	
	/** Default constructor, containing no code. 
	 */
	CBackProjectionAlgorithm();

	/** Default constructor
	 *
	 * @param _pProjector		Projector Object.
	 * @param _pSinogram		ProjectionData2D object containing the sinogram data.
	 * @param _pReconstruction	VolumeData2D object for storing the reconstructed volume.
	 */
	CBackProjectionAlgorithm(CProjector2D* _pProjector, 
	                         CFloat32ProjectionData2D* _pSinogram, 
	                         CFloat32VolumeData2D* _pReconstruction);

	/** Destructor. 
	 */
	virtual ~CBackProjectionAlgorithm();

	/** Clear this class.
	 */
	virtual void clear();

	/** Initialize the algorithm with a config object.
	 *
	 * @param _cfg Configuration Object
	 * @return Initialization successful?
	 */
	virtual bool initialize(const Config& _cfg);

	/** Initialize class.
	 *
	 * @param _pProjector		Projector Object.
	 * @param _pSinogram		ProjectionData2D object containing the sinogram data.
	 * @param _pReconstruction	VolumeData2D object for storing the reconstructed volume.
	 * @return Initialization successful?
	 */
	bool initialize(CProjector2D* _pProjector, 
					CFloat32ProjectionData2D* _pSinogram, 
					CFloat32VolumeData2D* _pReconstruction);

	/** Get all information parameters.
	 *
	 * @return Map with all available identifier strings and their values.
	 */
	virtual std::map<std::string,boost::any> getInformation();

	/** Get a single piece of information represented as a boost::any
	 *
	 * @param _sIdentifier Identifier string to specify which piece of information you want.
	 * @return One piece of information.
	 */
	virtual boost::any getInformation(std::string _sIdentifier);

	/** Perform a number of iterations.
	 *
	 * @param _iNrIterations amount of iterations to perform.
	 */
	virtual void run(int _iNrIterations = 0);

	/** Get a description of the class.
	 *
	 * @return description string
	 */
	virtual std::string description() const;

};

// inline functions
inline std::string CBackProjectionAlgorithm::description() const { return CBackProjectionAlgorithm::type; };


} // end namespace

#endif