ffmpeg/libavutil/pca.h

   1 /*
   2  * principal component analysis (PCA)
   3  * Copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at>
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg 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 GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 /**
  23  * @file
  24  * principal component analysis (PCA)
  25  */
  26
  27 #ifndef AVUTIL_PCA_H
  28 #define AVUTIL_PCA_H
  29
  30 struct PCA *ff_pca_init(int n);
  31 void ff_pca_free(struct PCA *pca);
  32 void ff_pca_add(struct PCA *pca, const double *v);
  33 int ff_pca(struct PCA *pca, double *eigenvector, double *eigenvalue);
  34
  35 #endif /* AVUTIL_PCA_H */