libit

00001 /*
00002    libit - Library for basic source and channel coding functions
00003    Copyright (C) 2005-2008 Vivien Chappelier, Herve Jegou
00004 
00005    This library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Library General Public
00007    License as published by the Free Software Foundation; either
00008    version 2 of the License, or (at your option) any later version.
00009 
00010    This library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Library General Public License for more details.
00014 
00015    You should have received a copy of the GNU Library General Public
00016    License along with this library; if not, write to the Free
00017    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00018 */
00019 
00020 /*
00021   Source fitting functions
00022   Copyright (C) 2005 Vivien Chappelier, Herve Jegou
00023 */
00024 
00025 
00026 #ifndef __it_source_fit_h
00027 #define __it_source_fit_h
00028 
00029 #include <it/vec.h>
00030 
00031 /*--------------------------------------------------------------------*
00032  * Fit a given histogram realization with a model                     *
00033  *--------------------------------------------------------------------*/
00034 
00035 
00036 /* Return the discrete pdf law associated with the Generalized 
00037    Gaussian of parameters gamma, beta and C                           */
00038   vec  source_pdf_GG (vec symbols, double alpha, double beta);
00039 
00040 /* Estimate the parameters of a generalized Gaussian in the Kullback distance sense */
00041   void source_estim_GG_from_histo (vec pdf, vec symbols, double *alpha,
00042            double *beta);
00043 
00044 #endif
include/it/source_fit.h
