vpStatisticalTestEWMA.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.
 */

 
#ifndef VP_STATISTICAL_TEST_EWMA_H
#define VP_STATISTICAL_TEST_EWMA_H
 
#include <visp3/core/vpConfig.h>
 
#include <visp3/core/vpStatisticalTestAbstract.h>
 
BEGIN_VISP_NAMESPACE
class VISP_EXPORT vpStatisticalTestEWMA : public vpStatisticalTestAbstract
{
protected:
  float m_alpha; 
  float m_wt; 
  float m_wtprev; 

  virtual void computeDeltaAndLimits();

  virtual vpMeanDriftType detectDownwardMeanDrift() VP_OVERRIDE;

  virtual vpMeanDriftType detectUpwardMeanDrift() VP_OVERRIDE;

  virtual bool updateStatistics(const float &signal) VP_OVERRIDE;

  virtual void updateTestSignals(const float &signal) VP_OVERRIDE;
 
public:
  vpStatisticalTestEWMA(const float &alpha = 0.1f);

  inline float getAlpha() const
  {
    return m_alpha;
  }

  inline float getWt() const
  {
    return m_wt;
  }

  void init(const float &alpha);

  void init(const float &alpha, const float &mean, const float &stdev);

  void setAlpha(const float &alpha);
};
END_VISP_NAMESPACE
#endif