From 82ab5ad7b2e23515a0e83a0434a5b32cc44a1b31 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Fri, 14 Jul 2006 10:03:09 +0000 Subject: linear least squares solver using cholesky factorization Originally committed as revision 5740 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavutil/lls.h | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 libavutil/lls.h (limited to 'libavutil/lls.h') diff --git a/libavutil/lls.h b/libavutil/lls.h new file mode 100644 index 0000000000..a75095faf9 --- /dev/null +++ b/libavutil/lls.h @@ -0,0 +1,42 @@ +/* + * linear least squares model + * + * Copyright (c) 2006 Michael Niedermayer + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef LLS_H +#define LLS_H + +#define MAX_VARS 32 + +//FIXME avoid direct access to LLSModel from outside + +/** + * Linear least squares model. + */ +typedef struct LLSModel{ + double covariance[MAX_VARS+1][MAX_VARS+1]; + double coeff[MAX_VARS]; + int indep_count; +}LLSModel; + +void av_init_lls(LLSModel *m, int indep_count); +void av_update_lls(LLSModel *m, double *param, double decay); +double av_solve_lls(LLSModel *m, double threshold); +double av_evaluate_lls(LLSModel *m, double *param); + +#endif -- cgit v1.2.3