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
|
/*
-----------------------------------------------------------------------
Copyright: 2010-2018, imec Vision Lab, University of Antwerp
2014-2018, CWI, Amsterdam
Contact: astra@astra-toolbox.com
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 FFT_H
#define FFT_H
#include <cufft.h>
#include <cuda.h>
#include "fbp_filters.h"
namespace astraCUDA {
bool allocateComplexOnDevice(int _iProjectionCount,
int _iDetectorCount,
cufftComplex ** _ppDevComplex);
bool freeComplexOnDevice(cufftComplex * _pDevComplex);
bool uploadComplexArrayToDevice(int _iProjectionCount, int _iDetectorCount,
cufftComplex * _pHostComplexSource,
cufftComplex * _pDevComplexTarget);
bool runCudaFFT(int _iProjectionCount, const float * _pfDevRealSource,
int _iSourcePitch, int _iProjDets,
int _iFFTRealDetectorCount, int _iFFTFourierDetectorCount,
cufftComplex * _pDevTargetComplex);
bool runCudaIFFT(int _iProjectionCount, const cufftComplex* _pDevSourceComplex,
float * _pfRealTarget,
int _iTargetPitch, int _iProjDets,
int _iFFTRealDetectorCount, int _iFFTFourierDetectorCount);
void applyFilter(int _iProjectionCount, int _iFreqBinCount,
cufftComplex * _pSinogram, cufftComplex * _pFilter);
int calcFFTFourierSize(int _iFFTRealSize);
void genFilter(astra::E_FBPFILTER _eFilter, float _fD, int _iProjectionCount,
cufftComplex * _pFilter, int _iFFTRealDetectorCount,
int _iFFTFourierDetectorCount, float _fParameter = -1.0f);
void genIdenFilter(int _iProjectionCount, cufftComplex * _pFilter,
int _iFFTRealDetectorCount, int _iFFTFourierDetectorCount);
}
#endif /* FFT_H */
|
