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 */ 36