Modules/ImageProcessor/ImageProcessorTools/LightingChangeTester.h

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/** 
* @file LightingChangeTester.h
* Declaration of class LightingChangeTester.
*
* @author <A href=mailto:juengel@informatik.hu-berlin.de>Matthias Jüngel</A>
*/

#include "Tools/RingBufferWithSum.h"

#ifndef _LightingChangeTester_h_
#define _LightingChangeTester_h_

/**
* @class LightingChangeTester
*
* The LightingChangeTester checks if the lighting has changed.
* To know this can be important for a color calibration system.
* The calibration system has to extract green pixels from the image.
* Each such pixel must be added using the method addColor.
* If a new image is processed startImage has to be called.
* The method lightingHasChanged returns true, if the lighting has changed.
* 
*
* @author <A href=mailto:juengel@informatik.hu-berlin.de>Matthias Jüngel</A>
*/

class LightingChangeTester
{
public:
  /** Constructor */
  LightingChangeTester();

  /** Destructor */
  ~LightingChangeTester();

  void init();
  void startImage();
  void addColor(int channel1, int channel2, int channel3);
  bool lightingHasChanged();

private:
  int numberOfImages;
  int numberOfMeasurementsInImage;
  int accumulatedValueInImage[3];

  RingBufferWithSum<10> valuesOfLastImages[3];
};

#endif   //  _LightingChangeTester_h_

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