DcmQuantHistogramItem Class Reference

this class extends DcmQuantPixel by an integer value which is used for various purposes. More...

Inheritance diagram for DcmQuantHistogramItem:

Public Member Functions
	DcmQuantHistogramItem (const DcmQuantPixel &colorP, int val)
	constructor More...
	DcmQuantHistogramItem ()
	default constructor
OFBool	equals (const DcmQuantPixel &colorP) const
	compares the stored pixel value with the given pixel. More...
int	getValue () const
	returns the integer value maintained by this object
void	setValue (int v)
	assigns a new integer value to this object More...
void	incValue ()
	increases the integer value maintained by this object by one
Public Member Functions inherited from DcmQuantPixel
	DcmQuantPixel ()
	default constructor, creates black pixel
	DcmQuantPixel (const DcmQuantPixel &arg)
	copy assignment constructor
virtual	~DcmQuantPixel ()
	destructor
OFBool	operator== (const DcmQuantPixel &src) const
	comparison operator for equality
double	luminance () const
	this method computes the luminance of the current pixel according to the NTSC formula. More...
unsigned long	hash () const
	this method computes an unsigned long hash value for the current pixel. More...
DcmQuantComponent	getRed () const
	returns the red component More...
DcmQuantComponent	getGreen () const
	returns the green component More...
DcmQuantComponent	getBlue () const
	returns the blue component More...
void	assign (DcmQuantComponent r, DcmQuantComponent g, DcmQuantComponent b)
	assigns new R, G and B values to this pixel More...
void	scale (DcmQuantComponent r, DcmQuantComponent g, DcmQuantComponent b, const DcmQuantScaleTable &table)
	assigns new R, G and B values to this pixel using the given scale table in which all three values are looked up. More...

Private Attributes
int	value
	integer value assigned to this pixel. More...

Detailed Description

this class extends DcmQuantPixel by an integer value which is used for various purposes.

The class is used as a helper class during computation of an image histogram, as a member of a color LUT and as a member of a color hash table.

Constructor & Destructor Documentation

DcmQuantHistogramItem::DcmQuantHistogramItem ( const DcmQuantPixel &  colorP, int  val  )

inline

constructor

Parameters

colorP	pixel value
val	initial value

Member Function Documentation

OFBool DcmQuantHistogramItem::equals ( const DcmQuantPixel &  colorP ) const

inline

compares the stored pixel value with the given pixel.

Parameters

colorP

pixel to compare with

Returns

true if pixel values are equal, false otherwise

void DcmQuantHistogramItem::setValue ( int  v )

inline

assigns a new integer value to this object

Parameters

v

new value

Member Data Documentation

int DcmQuantHistogramItem::value

private

integer value assigned to this pixel.

This value is used for different purposes. During computation of a histogram it is used as a counter that counts the instances of the current color. In a color hash table, it contains the index value from the color LUT assigned to this color. In a color LUT, it is the cluster value, i.e. the radius in which all color are guaranteed to be mapped to this palette color.

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

• dcmimage/include/dcmtk/dcmimage/diqthitm.h