vpMomentObject.h

/****************************************************************************
 *
 * $Id: vpMomentObject.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:
 * Object input structure used by moments.
 *
 * Authors:
 * Filip Novotny
 * Manikandan Bakthavatchalam
 *****************************************************************************/
#ifndef __MOMENTOBJECT_H__
#define __MOMENTOBJECT_H__

#include <visp/vpImage.h>
#include <visp/vpMoment.h>
#include <visp/vpPoint.h>

#include <utility>

class vpCameraParameters;

class VISP_EXPORT vpMomentObject{
public:
  typedef enum{
    DENSE_FULL_OBJECT = 0, 
    DENSE_POLYGON = 1, 
    DISCRETE = 2, 
  } vpObjectType;
  vpMomentObject(unsigned int order);
  void fromImage(const vpImage<unsigned char>& image,unsigned char threshold, const vpCameraParameters& cam);
  void fromVector(std::vector<vpPoint>& points);
  std::vector<double>& get();
  double get(unsigned int i,unsigned int j) const;
  vpObjectType getType() const {return type;}
  unsigned int getOrder() const {return order-1;}
  void setType(vpObjectType type){this->type=type;}
  friend VISP_EXPORT std::ostream & operator<<(std::ostream & os, const vpMomentObject& v);

private:
  unsigned int order;
  vpObjectType type;
  std::vector<double> values;
  void cacheValues(std::vector<double>& cache,double x, double y);
  double calc_mom_polygon(unsigned int p, unsigned int q, const std::vector<vpPoint>& points);

};

#endif