oln::utils::histogram< T, CPT, V2P, Exact > Class Template Reference

#include <histogram.hh>

Inheritance diagram for oln::utils::histogram< T, CPT, V2P, Exact >:

[legend]Collaboration diagram for oln::utils::histogram< T, CPT, V2P, Exact >:

[legend]List of all members.

Public Types
typedef mlc::exact_vt< histogram< T, CPT, V2P, Exact >, Exact >::ret	exact_type
typedef hist_traits< exact_type >::value_type	value_type
typedef hist_traits< exact_type >::cpt_type	cpt_type
typedef hist_traits< exact_type >::value_to_point_type	value_to_point_type
typedef hist_traits< exact_type >::point_type	point_type
typedef hist_traits< exact_type >::img_type	img_type
enum	{ dim = hist_traits<exact_type>::dim }
Public Member Functions
	histogram (const value_to_point_type &c2p=value_to_point_type())
	Empty histogram.
template<class I>	histogram (const oln::abstract::image< I > &input, const value_to_point_type &v2p=value_to_point_type())
	This compute the histogram of an image.
void	clear_impl ()
	clear() should be called.
const cpt_type	at (const T &v) const
	operator[] should be called.
cpt_type &	at (const value_type &v)
	operator[] should be called.
template<class I> void	init_impl (const oln::abstract::image< I > &img)
	impl() should be called.
const img_type &	image () const
	Return the image of occurrence.
Protected Attributes
const value_to_point_type	v2p_
img_type	img_

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Detailed Description

template<typename T, typename CPT, class V2P, class Exact>
class oln::utils::histogram< T, CPT, V2P, Exact >

Histogram.

This histogram uses an image of unsigned to store the value. For example the histogram of an image<int_u8> will store the number of occurrences in an image1d; an image<rgb_8> will store the number of occurrences an image3d (because rgb_8 has 3 components).

Todo:

FIXME: An image is inside the histogram. This is incorrect because it is not exactly an image (no border needed).

Parameters:

T	Type of the image.
CPT	Type used to count the occurrences (unsigned).
V2P	Conversion class to convert a value T to a point.
Exact	Exact type of the histogram.

See also:

oln::abstract::histogram

  #include <oln/basics2d.hh>
  #include <oln/utils/histogram.hh>
  #include <ntg/all.hh>
  #include <iostream>

  int main()
  {
    oln::image2d<ntg::rgb_8> in = oln::io::load(IMG_IN "lena.ppm");

    oln::utils::histogram<ntg::rgb_8> h(in);

    ntg::rgb_8 pink(215, 129, 113);

    // h[pink] = 14
    std::cout << "Number of occurrences of the color (213, 129, 135): "
            <<  h[pink] << std::endl;
  }

Definition at line 214 of file histogram.hh.

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Constructor & Destructor Documentation

template<typename T, typename CPT, class V2P, class Exact> oln::utils::histogram< T, CPT, V2P, Exact >::histogram (  const value_to_point_type &  c2p = value_to_point_type()  )  [inline]

Empty histogram. Note: The function init(image) should be used after this constructor. Definition at line 233 of file histogram.hh. : v2p_(c2p), img_(internal::img_max_size<value_type>()()) { clear(); }

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

• histogram.hh

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