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Image Component Library (ICL)
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Image Component Library (ICL)
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00001 /******************************************************************** 00002 ** Image Component Library (ICL) ** 00003 ** ** 00004 ** Copyright (C) 2006-2013 CITEC, University of Bielefeld ** 00005 ** Neuroinformatics Group ** 00006 ** Website: www.iclcv.org and ** 00007 ** http://opensource.cit-ec.de/projects/icl ** 00008 ** ** 00009 ** File : ICLMath/src/ICLMath/FFTUtils.h ** 00010 ** Module : ICLMath ** 00011 ** Authors: Christian Groszewski, Christof Elbrechter ** 00012 ** ** 00013 ** ** 00014 ** GNU LESSER GENERAL PUBLIC LICENSE ** 00015 ** This file may be used under the terms of the GNU Lesser General ** 00016 ** Public License version 3.0 as published by the ** 00017 ** ** 00018 ** Free Software Foundation and appearing in the file LICENSE.GPL ** 00019 ** included in the packaging of this file. Please review the ** 00020 ** following information to ensure the license requirements will ** 00021 ** be met: http://www.gnu.org/licenses/lgpl-3.0.txt ** 00022 ** ** 00023 ** The development of this software was supported by the ** 00024 ** Excellence Cluster EXC 277 Cognitive Interaction Technology. ** 00025 ** The Excellence Cluster EXC 277 is a grant of the Deutsche ** 00026 ** Forschungsgemeinschaft (DFG) in the context of the German ** 00027 ** Excellence Initiative. ** 00028 ** ** 00029 ********************************************************************/ 00030 00031 #pragma once 00032 00033 #include <complex> 00034 #include <ICLUtils/BasicTypes.h> 00035 #include <ICLMath/DynMatrix.h> 00036 #include <ICLMath/FFTException.h> 00037 #include <string.h> 00038 00039 using namespace icl::utils; 00040 00041 namespace icl{ 00042 namespace math{ 00043 00044 namespace fft{ 00045 00047 static const double FFT_2_PI = 2.0*3.1415926535897932384626433832795288419716939937510; 00048 00050 static const double FFT_PI = 3.1415926535897932384626433832795288419716939937510; 00051 00053 static const double FFT_PI_HALF = 1.5707963267948966192313216916397644209858469968755; 00054 00056 00066 template<typename T1,typename T2> 00067 std::complex<T2>* fft(unsigned int n, const T1* data); 00068 00070 00080 template<typename T1, typename T2> 00081 DynMatrix<std::complex<T2> >& fft2D_cpp(const DynMatrix<T1> &src, 00082 DynMatrix<std::complex<T2> > &dst,DynMatrix<std::complex<T2> > &buf); 00083 00085 00095 template<typename T1, typename T2> 00096 DynMatrix<std::complex<T2> >& fft2D(const DynMatrix<T1> &src,DynMatrix<std::complex<T2> > &dst, 00097 DynMatrix<std::complex<T2> > &buf); 00098 00100 00108 template<typename T1,typename T2> 00109 std::complex<T2>* dft(unsigned int n, T1 *matrix); 00110 00112 00121 template<typename T1,typename T2> 00122 DynMatrix<std::complex<T2> >& dft2D(DynMatrix<T1> &src, 00123 DynMatrix<std::complex<T2> >& dst,DynMatrix<std::complex<T2> >&buf); 00124 00126 00133 template<typename T1,typename T2> 00134 std::complex<T2>* ifft_cpp(unsigned int n, const T1* matrix); 00135 00137 00145 template<typename T1, typename T2> 00146 DynMatrix<std::complex<T2> >& ifft2D_cpp(const DynMatrix<T1>& src, 00147 DynMatrix<std::complex<T2> > &dst,DynMatrix<std::complex<T2> > &buf); 00148 00150 00159 template<typename T1, typename T2> 00160 DynMatrix<std::complex<T2> >& ifft2D(const DynMatrix<T1> &src,DynMatrix<std::complex<T2> > &dst, 00161 DynMatrix<std::complex<T2> > &buf); 00162 00164 00169 template<typename T1,typename T2> 00170 std::complex<T2>* idft(unsigned int n, T1 *matrix); 00171 00173 00180 template<typename T1,typename T2> 00181 DynMatrix<std::complex<T2> > &idft2D(DynMatrix<T1> &src, DynMatrix<std::complex<T2> > &dst, 00182 DynMatrix<std::complex<T2> > &buf); 00183 00185 00190 template<typename T> 00191 DynMatrix<T>& fftshift(DynMatrix<T> &src,DynMatrix<T> &dst) throw (InvalidMatrixDimensionException); 00192 00194 00199 template<typename T> 00200 DynMatrix<T>& ifftshift(DynMatrix<T> &src,DynMatrix<T> &dst) throw (InvalidMatrixDimensionException); 00201 00203 00208 template<typename T> 00209 DynMatrix<T>& powerspectrum(const DynMatrix<std::complex<T> > &src,DynMatrix<T> &dst); 00210 00212 00217 template<typename T> 00218 DynMatrix<T>& logpowerspectrum(const DynMatrix<std::complex<T> > &src,DynMatrix<T> &dst); 00219 00221 00228 template<typename T> 00229 DynMatrix<T> &makeborder(const DynMatrix<T> &src,DynMatrix<T> &dst, T borderFill); 00230 00232 00238 template<typename T> 00239 DynMatrix<T> &mirrorOnCenter(const DynMatrix<T> &src, DynMatrix<T> &dst); 00240 00242 00249 template<typename T> 00250 DynMatrix<T> &continueMatrixToPowerOf2(const DynMatrix<T> &src, DynMatrix<T> &dst); 00251 00252 00254 int nextPowerOf2(int n); 00255 00257 int priorPowerOf2(int n); 00258 00260 00266 template<typename T> 00267 void split_complex(const DynMatrix<std::complex<T> > &src, DynMatrix<T> &real, DynMatrix<T> &img); 00268 00270 00275 template<typename T1,typename T2> 00276 DynMatrix<T2> &imagpart(const DynMatrix<std::complex<T1> > &src,DynMatrix<T2> &dst); 00277 00279 00284 template<typename T1,typename T2> 00285 DynMatrix<T2> &realpart(const DynMatrix<std::complex<T1> > &src, DynMatrix<T2> &dst); 00286 00288 00293 template<typename T1,typename T2> 00294 DynMatrix<T2>& magnitude(const DynMatrix<std::complex<T1> > &src, DynMatrix<T2> &dst); 00295 00297 00302 template<typename T1,typename T2> 00303 DynMatrix<T2>& phase(const DynMatrix<std::complex<T1> > &src, DynMatrix<T2> &dst); 00304 00306 00311 template<typename T> 00312 void split_magnitude_phase(const DynMatrix<std::complex<T> > &src, DynMatrix<T> &mag, DynMatrix<T> &phase); 00313 00315 00319 template<typename T1,typename T2> 00320 DynMatrix<std::complex<T2> > &joinComplex(const DynMatrix<T1> &real, const DynMatrix<T1> &im,DynMatrix<std::complex<T2> > &dst); 00321 00322 } // namespace math 00323 } 00324 }
1.7.6.1
