vpScale.h

/****************************************************************************
 *
 * $Id: vpScale.h 4056 2013-01-05 13:04:42Z fspindle $
 *
 * This file is part of the ViSP software.
 * Copyright (C) 2005 - 2013 by INRIA. All rights reserved.
 * 
 * This software is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * ("GPL") version 2 as published by the Free Software Foundation.
 * See the file LICENSE.txt at the root directory of this source
 * distribution for additional information about the GNU GPL.
 *
 * For using ViSP with software that can not be combined with the GNU
 * GPL, please contact INRIA about acquiring a ViSP Professional 
 * Edition License.
 *
 * See http://www.irisa.fr/lagadic/visp/visp.html for more information.
 * 
 * This software was developed at:
 * INRIA Rennes - Bretagne Atlantique
 * Campus Universitaire de Beaulieu
 * 35042 Rennes Cedex
 * France
 * http://www.irisa.fr/lagadic
 *
 * If you have questions regarding the use of this file, please contact
 * INRIA at visp@inria.fr
 * 
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *
 * Description:
 * Median Absolute Deviation (MAD), MPDE, Mean shift kernel density estimation.
 *
 * Authors:
 * Andrew Comport
 *
 *****************************************************************************/

// =========================================================
// ==========================================================


#ifndef VPSCALE_HH
#define VPSCALE_HH

#define EPANECHNIKOV 0

#include <visp/vpColVector.h>
#include <math.h>


class VISP_EXPORT vpScale
{

private:
  double bandwidth;
  unsigned int dimension;
  int kernel_type;

public:

  vpScale();
  vpScale(double, int, int);
  virtual ~vpScale(void);

  double MeanShift(vpColVector &error);
  double KernelDensity(vpColVector &error, unsigned int position);
  double KernelDensityGradient(vpColVector &error, unsigned int position);

  double KernelDensity_EPANECHNIKOV(vpColVector &X);
  double KernelDensityGradient_EPANECHNIKOV(double X, unsigned int n);

};

#endif