vpScale.h

/*
 * ViSP, open source Visual Servoing Platform software.
 * Copyright (C) 2005 - 2025 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 as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 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 https://visp.inria.fr for more information.
 *
 * This software was developed at:
 * Inria Rennes - Bretagne Atlantique
 * Campus Universitaire de Beaulieu
 * 35042 Rennes Cedex
 * France
 *
 * 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.
 */

 
// =========================================================
// ==========================================================
 
#ifndef VP_SCALE_H
#define VP_SCALE_H
 
#include <math.h>
#include <visp3/core/vpColVector.h>
 
BEGIN_VISP_NAMESPACE
class VISP_EXPORT vpScale
{
 
private:
  double bandwidth;
  unsigned int dimension;
 
public:
  vpScale();
  vpScale(double kernel_bandwidth, unsigned int dim = 1);
#if (VISP_CXX_STANDARD > VISP_CXX_STANDARD_98)
  vpScale(const vpScale &) = default;
  virtual ~vpScale() = default;
#else
  virtual ~vpScale() { }
#endif
 
  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);
 
#if (VISP_CXX_STANDARD > VISP_CXX_STANDARD_98)
  vpScale &operator=(const vpScale &) = default;
#endif
};
END_VISP_NAMESPACE
#endif