source: foam/trunk/vision/src/PCA.h @ 86

Revision 86, 1.4 KB checked in by dave, 11 years ago (diff)

lots of code added - pca implementation for eigenfaces and lda started

Line 
1// Copyright (C) 2009 foam
2//
3// This program is free software; you can redistribute it and/or modify
4// it under the terms of the GNU General Public License as published by
5// the Free Software Foundation; either version 2 of the License, or
6// (at your option) any later version.
7//
8// This program is distributed in the hope that it will be useful,
9// but WITHOUT ANY WARRANTY; without even the implied warranty of
10// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11// GNU General Public License for more details.
12//
13// You should have received a copy of the GNU General Public License
14// along with this program; if not, write to the Free Software
15// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
16
17#include <vector>
18#include <map>
19#include <set>
20#include "Vector.h"
21#include "Matrix.h"
22#include "Classifier.h"
23
24#ifndef FOAM_PCA
25#define FOAM_PCA
26
27// Principle component analysis
28
29class PCA
30{
31public:
32        PCA(unsigned int FeatureSize);
33        ~PCA();
34
35        void AddFeature(Vector<float> v) { m_Features.push_back(v); }
36        void Calculate();
37
38        static void RunTests();
39
40        const Vector<float> &GetEigenValues() { return m_EigenValues; }
41        const Matrix<float> &GetEigenTransform() { return m_EigenTransform; }
42
43private:       
44
45        void CalcMean();
46
47        typedef std::vector<Vector<float> > FeatureVec;
48
49        FeatureVec m_Features;
50        unsigned int m_FeatureSize;
51        Vector<float> m_Mean;
52       
53        Vector<float> m_EigenValues;
54        Matrix<float> m_EigenTransform;
55       
56};
57
58#endif
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