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transforms.cpp File Reference

Implementation of Fourier, Hadamard, Walsh-Hadamard, and 2D Hadamard transforms. More...

#include <itpp/config.h>
#include <itpp/base/transforms.h>
#include <itpp/base/elmatfunc.h>

Go to the source code of this file.

Namespaces

namespace  itpp

Functions

void fft (const cvec &in, cvec &out)
 Fast Fourier Transform.
void ifft (const cvec &in, cvec &out)
 Inverse Fast Fourier Transform.
void fft_real (const vec &in, cvec &out)
 Real Fast Fourier Transform.
void ifft_real (const cvec &in, vec &out)
 Inverse Real Fast Fourier Transform. Assumes even size.
void dct (const vec &in, vec &out)
 Discrete Cosine Transform (DCT).
void idct (const vec &in, vec &out)
 Inverse Discrete Cosine Transform (IDCT).
cvec fft (const cvec &in)
 Fast Fourier Transform.
cvec fft (const cvec &in, const int N)
 Fast Fourier Transform, with zero-padding up to size N.
cvec ifft (const cvec &in)
 Inverse Fast Fourier Transform.
cvec ifft (const cvec &in, const int N)
 Inverse Fast Fourier Transform, with zero-padding up to size N.
cvec fft_real (const vec &in)
 Real Fast Fourier Transform.
cvec fft_real (const vec &in, const int N)
 Real Fast Fourier Transform, with zero-padding up to size N.
vec ifft_real (const cvec &in)
 Inverse Real Fast Fourier Transform. Assumes even size.
vec ifft_real (const cvec &in, const int N)
 Inverse Real Fast Fourier Transform, with zero-padding up to size N.
vec dct (const vec &in)
 Discrete Cosine Transform (DCT).
vec idct (const vec &in)
 Inverse Discrete Cosine Transform (IDCT).
template vec dht (const vec &v)
 Template instantiation of dht.
template cvec dht (const cvec &v)
 Template instantiation of dht.
template void dht (const vec &vin, vec &vout)
 Template instantiation of dht.
template void dht (const cvec &vin, cvec &vout)
 Template instantiation of dht.
template void self_dht (vec &v)
 Template instantiation of self_dht.
template void self_dht (cvec &v)
 Template instantiation of self_dht.
template vec dwht (const vec &v)
 Template instantiation of dwht.
template cvec dwht (const cvec &v)
 Template instantiation of dwht.
template void dwht (const vec &vin, vec &vout)
 Template instantiation of dwht.
template void dwht (const cvec &vin, cvec &vout)
 Template instantiation of dwht.
template void self_dwht (vec &v)
 Template instantiation of self_dwht.
template void self_dwht (cvec &v)
 Template instantiation of self_dwht.
template mat dht2 (const mat &m)
 Template instantiation of dht2.
template cmat dht2 (const cmat &m)
 Template instantiation of dht2.
template mat dwht2 (const mat &m)
 Template instantiation of dht2.
template cmat dwht2 (const cmat &m)
 Template instantiation of dht2.


Detailed Description

Implementation of Fourier, Hadamard, Walsh-Hadamard, and 2D Hadamard transforms.

Author:
Tony Ottosson, Thomas Eriksson, Simon Wood and Adam Piatyszek
Date
2007-06-11 13:58:31 +0200 (Mon, 11 Jun 2007)
Revision
1060

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IT++ - C++ library of mathematical, signal processing, speech processing, and communications classes and functions

Copyright (C) 1995-2007 (see AUTHORS file for a list of contributors)

This program 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 2 of the License, or (at your option) any later version.

This program 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 this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

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Definition in file transforms.cpp.


Function Documentation

template vec itpp::dht const vec &  v  ) 
 

Template instantiation of dht.

template cvec itpp::dht const cvec &  v  ) 
 

Template instantiation of dht.

template void itpp::dht const vec &  vin,
vec &  vout
 

Template instantiation of dht.

template void itpp::dht const cvec &  vin,
cvec &  vout
 

Template instantiation of dht.

template void itpp::self_dht vec &  v  ) 
 

Template instantiation of self_dht.

template void itpp::self_dht cvec &  v  ) 
 

Template instantiation of self_dht.

template vec itpp::dwht const vec &  v  ) 
 

Template instantiation of dwht.

template cvec itpp::dwht const cvec &  v  ) 
 

Template instantiation of dwht.

template void itpp::dwht const vec &  vin,
vec &  vout
 

Template instantiation of dwht.

template void itpp::dwht const cvec &  vin,
cvec &  vout
 

Template instantiation of dwht.

template void itpp::self_dwht vec &  v  ) 
 

Template instantiation of self_dwht.

template void itpp::self_dwht cvec &  v  ) 
 

Template instantiation of self_dwht.

template mat itpp::dht2 const mat &  m  ) 
 

Template instantiation of dht2.

template cmat itpp::dht2 const cmat &  m  ) 
 

Template instantiation of dht2.

template mat itpp::dwht2 const mat &  m  ) 
 

Template instantiation of dht2.

template cmat itpp::dwht2 const cmat &  m  ) 
 

Template instantiation of dht2.

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