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  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, double *v);
  33. int ff_pca(struct PCA *pca, double *eigenvector, double *eigenvalue);
  34.  
  35. #endif /* AVUTIL_PCA_H */
  36.