/****************************************************************************
 *
 * ViSP, open source Visual Servoing Platform software.
 * Copyright (C) 2005 - 2023 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:
 * Template tracker.
 *
 * Authors:
 * Amaury Dame
 * Aurelien Yol
 *
*****************************************************************************/
/*!
 \file vpTemplateTrackerSSD.h
 \brief
*/

#ifndef vpTemplateTrackerSSD_hh
#define vpTemplateTrackerSSD_hh

#include <math.h>

#include <visp3/core/vpDisplay.h>
#include <visp3/core/vpImage.h>
#include <visp3/core/vpImageFilter.h>
#include <visp3/core/vpImageTools.h>
#include <visp3/core/vpIoTools.h>
#include <visp3/core/vpMath.h>
#include <visp3/tt/vpTemplateTracker.h>
#include <visp3/vision/vpHomography.h>

/*!
  \class vpTemplateTrackerSSD
  \ingroup group_tt_tracker
*/
class VISP_EXPORT vpTemplateTrackerSSD : public vpTemplateTracker
{
protected:
  vpRowVector DI;
  vpRowVector temp;

protected:
  double getCost(const vpImage<unsigned char> &I, const vpColVector &tp);
  double getCost(const vpImage<unsigned char> &I) { return getCost(I, p); }
  virtual void initHessienDesired(const vpImage<unsigned char> &I) = 0;
  virtual void trackNoPyr(const vpImage<unsigned char> &I) = 0;

public:
  explicit vpTemplateTrackerSSD(vpTemplateTrackerWarp *warp);

  double getSSD(const vpImage<unsigned char> &I, const vpColVector &tp);
  void setGain(double g) { gain = g; }
};

#endif
