objects of this class represent individual RGB pixels. More...

Inheritance diagram for DcmQuantPixel:

Public Member Functions
	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
DcmQuantComponent	red
	red color component of this pixel

DcmQuantComponent	green
	green color component of this pixel

DcmQuantComponent	blue
	blue color component of this pixel

Detailed Description

objects of this class represent individual RGB pixels.

This class is used by the color quantization classes. For efficiency considerations, all methods are declared inline.

Member Function Documentation

void DcmQuantPixel::assign	(	DcmQuantComponent	r,
		DcmQuantComponent	g,
		DcmQuantComponent	b
	)

inline

assigns new R, G and B values to this pixel

Parameters

r	new R
g	new G
b	new B

Referenced by DcmQuantFloydSteinberg::adjust().

DcmQuantComponent DcmQuantPixel::getBlue ( ) const

inline

returns the blue component

Returns: blue component of this pixel

Referenced by DcmQuantFloydSteinberg::adjust(), DcmQuantColorTable::computeIndex(), and DcmQuantFloydSteinberg::propagate().

DcmQuantComponent DcmQuantPixel::getGreen ( ) const

inline

returns the green component

Returns: green component of this pixel

Referenced by DcmQuantFloydSteinberg::adjust(), DcmQuantColorTable::computeIndex(), and DcmQuantFloydSteinberg::propagate().

DcmQuantComponent DcmQuantPixel::getRed ( ) const

inline

returns the red component

Returns: red component of this pixel

Referenced by DcmQuantFloydSteinberg::adjust(), DcmQuantColorTable::computeIndex(), and DcmQuantFloydSteinberg::propagate().

unsigned long DcmQuantPixel::hash ( ) const

inline

this method computes an unsigned long hash value for the current pixel.

The hash algorithm is taken from Jef Poskanzer's ppm utility library. The return value is guaranteed to be < DcmQuantHashSize.

Returns: hash value for current pixel

Referenced by DcmQuantColorHashTable::item(), and DcmQuantColorHashTable::lookup().

double DcmQuantPixel::luminance ( ) const

inline

this method computes the luminance of the current pixel according to the NTSC formula.

The range of the luminance equals the range of the underlying DcmQuantComponent type. However, the luminance is returned as a double.

Returns: luminance of this pixel

void DcmQuantPixel::scale	(	DcmQuantComponent	r,
		DcmQuantComponent	g,
		DcmQuantComponent	b,
		const DcmQuantScaleTable &	table
	)

inline

assigns new R, G and B values to this pixel using the given scale table in which all three values are looked up.

Parameters

r	new R
g	new G
b	new B
table	scale table (LUT) in which R, G and B are looked up.

Referenced by DcmQuantColorMapping< T1, T2 >::create().

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

dcmimage/include/dcmtk/dcmimage/diqtpix.h

Public Member Functions

Private Attributes

Detailed Description

Member Function Documentation