degate::BackgroundClassifier< ImageType, HistogramType > Class Template Reference

#include <BackgroundClassifier.h>

Inheritance diagram for degate::BackgroundClassifier< ImageType, HistogramType >:

List of all members.

Public Member Functions
	BackgroundClassifier (std::tr1::shared_ptr< ImageType > _img, unsigned int _width, unsigned int _threshold, std::string const &_name)
std::string	get_name () const
void	add_background_areas (std::list< BoundingBox > const &bg_areas)
void	add_foreground_areas (std::list< BoundingBox > const &fg_areas)
int	recognize (coord_type &v)
Private Attributes
const std::tr1::shared_ptr < ImageType >	img
HistogramType	hist_bg
HistogramType	hist_fg
const unsigned int	width
const unsigned int	threshold
const std::string	cl_name

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Detailed Description

template<class ImageType, typename HistogramType>
class degate::BackgroundClassifier< ImageType, HistogramType >

Definition at line 59 of file BackgroundClassifier.h.

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Constructor & Destructor Documentation

template<class ImageType , typename HistogramType >

degate::BackgroundClassifier< ImageType, HistogramType >::BackgroundClassifier	(	std::tr1::shared_ptr< ImageType >	_img,
		unsigned int	_width,
		unsigned int	_threshold,
		std::string const &	_name
	)		[inline]

Definition at line 72 of file BackgroundClassifier.h.

                                                 :
      img(_img),
      width(_width),
      threshold(_threshold),
      cl_name(_name) {
    }

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Member Function Documentation

template<class ImageType , typename HistogramType >

void degate::BackgroundClassifier< ImageType, HistogramType >::add_background_areas

(

std::list< BoundingBox > const &

bg_areas

)

[inline, virtual]

Implements degate::BackgroundClassifierBase.

Definition at line 88 of file BackgroundClassifier.h.

References degate::BackgroundClassifier< ImageType, HistogramType >::hist_bg, and degate::BackgroundClassifier< ImageType, HistogramType >::img.

                                                                    {

      for(std::list<BoundingBox>::const_iterator iter = bg_areas.begin();
          iter != bg_areas.end(); ++iter) {
        hist_bg.add_area(img, *iter);
      }
    }

template<class ImageType , typename HistogramType >

void degate::BackgroundClassifier< ImageType, HistogramType >::add_foreground_areas

(

std::list< BoundingBox > const &

fg_areas

)

[inline, virtual]

Implements degate::BackgroundClassifierBase.

Definition at line 97 of file BackgroundClassifier.h.

References degate::BackgroundClassifier< ImageType, HistogramType >::hist_fg, and degate::BackgroundClassifier< ImageType, HistogramType >::img.

                                                                    {


      for(std::list<BoundingBox>::const_iterator iter = fg_areas.begin();
          iter != fg_areas.end(); ++iter) {
        hist_fg.add_area(img, *iter);
      }
    }

template<class ImageType , typename HistogramType >

std::string degate::BackgroundClassifier< ImageType, HistogramType >::get_name

(

)

const [inline, virtual]

Implements Classifier< coord_type >.

Definition at line 83 of file BackgroundClassifier.h.

References degate::BackgroundClassifier< ImageType, HistogramType >::cl_name.

                               {
      return cl_name;
    }

template<class ImageType , typename HistogramType >

int degate::BackgroundClassifier< ImageType, HistogramType >::recognize

(

coord_type &

v

)

[inline, virtual]

Todo:

Cache data

Implements degate::BackgroundClassifierBase.

Definition at line 110 of file BackgroundClassifier.h.

References degate::BackgroundClassifier< ImageType, HistogramType >::hist_bg, degate::BackgroundClassifier< ImageType, HistogramType >::hist_fg, degate::BackgroundClassifier< ImageType, HistogramType >::img, degate::BackgroundClassifier< ImageType, HistogramType >::threshold, and degate::BackgroundClassifier< ImageType, HistogramType >::width.

                                  {
      unsigned int sum = 0;

      int radius = width >> 1;
      int x = v.first, y = v.second;

      if((x > radius && x < (int)img->get_width() - radius) &&
         (y > radius && y < (int)img->get_height() - radius)) {

        for(int _y = -radius; _y < radius; _y++)
          for(int _x = -radius; _x < radius; _x++) {
            rgba_pixel_t p = img->get_pixel(x + _x, y + _y);
            if(hist_fg.get_for_rgb(p) > hist_bg.get_for_rgb(p)) sum++;
          }
      }


      if(sum >= threshold) return 1;
      else return -1;
    }

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Member Data Documentation

template<class ImageType , typename HistogramType >

const std::string degate::BackgroundClassifier< ImageType, HistogramType >::cl_name [private]

Definition at line 67 of file BackgroundClassifier.h.

Referenced by degate::BackgroundClassifier< ImageType, HistogramType >::get_name().

template<class ImageType , typename HistogramType >

HistogramType degate::BackgroundClassifier< ImageType, HistogramType >::hist_bg [private]

Definition at line 64 of file BackgroundClassifier.h.

Referenced by degate::BackgroundClassifier< ImageType, HistogramType >::add_background_areas(), and degate::BackgroundClassifier< ImageType, HistogramType >::recognize().

template<class ImageType , typename HistogramType >

HistogramType degate::BackgroundClassifier< ImageType, HistogramType >::hist_fg [private]

Definition at line 64 of file BackgroundClassifier.h.

Referenced by degate::BackgroundClassifier< ImageType, HistogramType >::add_foreground_areas(), and degate::BackgroundClassifier< ImageType, HistogramType >::recognize().

template<class ImageType , typename HistogramType >

const std::tr1::shared_ptr<ImageType> degate::BackgroundClassifier< ImageType, HistogramType >::img [private]

Definition at line 63 of file BackgroundClassifier.h.

Referenced by degate::BackgroundClassifier< ImageType, HistogramType >::add_background_areas(), degate::BackgroundClassifier< ImageType, HistogramType >::add_foreground_areas(), and degate::BackgroundClassifier< ImageType, HistogramType >::recognize().

template<class ImageType , typename HistogramType >

const unsigned int degate::BackgroundClassifier< ImageType, HistogramType >::threshold [private]

Definition at line 66 of file BackgroundClassifier.h.

Referenced by degate::BackgroundClassifier< ImageType, HistogramType >::recognize().

template<class ImageType , typename HistogramType >

const unsigned int degate::BackgroundClassifier< ImageType, HistogramType >::width [private]

Definition at line 65 of file BackgroundClassifier.h.

Referenced by degate::BackgroundClassifier< ImageType, HistogramType >::recognize().

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The documentation for this class was generated from the following file:

• BackgroundClassifier.h