iRoCS Toolbox  1.1.0
NormalPDF.hh
Go to the documentation of this file.
1 /**************************************************************************
2  *
3  * Copyright (C) 2015 Margret Keuper, Thorsten Falk
4  *
5  * Image Analysis Lab, University of Freiburg, Germany
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 3 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  *
21  **************************************************************************/
22 
23 #ifndef NORMALPDF_HH
24 #define NORMALPDF_HH
25 
26 #ifdef HAVE_CONFIG_H
27 #include <config.hh>
28 #endif
29 
30 #include <blitz/array.h>
31 
32 namespace segmentation {
33 
34 /*===========================================================================*/
38 /*===========================================================================*/
39 template<typename T>
40 class NormalPDF {
41 public:
47  NormalPDF(const blitz::Array<T, 2> &samples);
48  NormalPDF(const blitz::Array<T, 1> &mean,
49  const blitz::Array<T, 2> &information);
50 
51  blitz::Array<T, 1> mean_;
52  blitz::Array<T, 2> covariance_;
53  blitz::Array<T, 2> information_matrix_;
54 
59  void invertCovariance();
60 };
61 
62 template<typename T>
64 public:
66  T operator()(const NormalPDF<T>& pdf, const blitz::Array<T, 1>& sample);
67 };
68 
69 }
70 
71 #endif // NORMALPDF_HH
blitz::Array< T, 1 > mean_
Definition: NormalPDF.hh:51
void invertCovariance()
Calculates information_matrix_ don&#39;t use information_matrix_ before calling this method.
NormalPDF(const blitz::Array< T, 2 > &samples)
Estimate PDF from given set of samples.
Encapsulates a normal pdf.
Definition: NormalPDF.hh:40
blitz::Array< T, 2 > covariance_
Definition: NormalPDF.hh:52
blitz::Array< T, 2 > information_matrix_
Definition: NormalPDF.hh:53