icl::filter::LUTOp Class Reference

class for applying table lookup transformation to Img8u images More...

#include <LUTOp.h>

Inheritance diagram for icl::filter::LUTOp:

List of all members.

Public Member Functions
	LUTOp (const std::vector< icl8u > &lut)
	creates a LUT object with given lut (LUT-mode)
	LUTOp (icl8u quantizationLevels=255)
	creates a LUT object with given count of quatization levels (Levels-mode)
virtual	~LUTOp ()
	destructor
virtual void	apply (const core::ImgBase *src, core::ImgBase **dst)
	Common Filter apply function using current mode.
void	setLUT (const std::vector< icl8u > &lut)
	sets the current lut and switches to the lut-mode
void	setQuantizationLevels (int levels)
	sets current count of quatization levels and switches to the levels-mode
icl8u	getQuantizationLevels () const
	returns the current count of quatization levels or 0 if current mode is lut-mode
const std::vector< icl8u > &	getLUT () const
	return the current used lut, of a 0-sized vector if current mode is levels-mode
bool	isLUTSet () const
	retruns whether current mode is lut-mode
bool	isLevelsSet () const
	retruns whether current mode is levels-mode
Static Public Member Functions
static void	simple (const core::Img8u *src, core::Img8u *dst, const std::vector< icl8u > &lut)
	simple lut transformation dst(p) = lut(src(p))
static void	reduceBits (const core::Img8u *src, core::Img8u *dst, icl8u levels)
	specialization of a lut transformation to reduce the number colors levels image a given image
Private Attributes
bool	m_bLevelsSet
bool	m_bLutSet
std::vector< icl8u >	m_vecLUT
icl8u	m_ucQuantizationLevels
core::Img8u *	m_poBuffer

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Detailed Description

class for applying table lookup transformation to Img8u images

Class

The class knows two modes: first: given count of quantization levels, it is able to calculate an internal lut for applying a quantization on the given src image. The other mode requires a given LUT, that is used to apply a LUT-function on the source image.

How to use the ImgBase class.

The mode, that is currently used depend on the specific constructor, that is used to create the LUT object, or on the last setter-function, that was called to the object. The current mode can be read out by calling the isLUTSet() or isLevelsSet() getter functions. These two functions return values exclude each others.

Datatypes

The LUT function is only implemented for Img8u images with range [0,255]. Other image depths are emulated by converting the given image into an internal Img8u buffer.

Static functions

For a fast access two additional static functions are provided - one for each mode. This functions are only available for depth8u images.

IPP

Yet, only the reduceBits function and therewith the according LUT-objects mode with given count of quantization levels is IPP optimized.

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Constructor & Destructor Documentation

icl::filter::LUTOp::LUTOp

(

const std::vector< icl8u > &

lut

)

creates a LUT object with given lut (LUT-mode)

Parameters:

lut	LUT-vector to use

icl::filter::LUTOp::LUTOp

(

icl8u

quantizationLevels = 255

)

creates a LUT object with given count of quatization levels (Levels-mode)

Parameters:

quantizationLevels

count of quanzation levels to use

virtual icl::filter::LUTOp::~LUTOp

(

)

[inline, virtual]

destructor

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Member Function Documentation

virtual void icl::filter::LUTOp::apply	(	const core::ImgBase *	src,
		core::ImgBase **	dst
	)		[virtual]

Common Filter apply function using current mode.

Parameters:

src	source image
dst	destination image**

Implements icl::filter::UnaryOp.

const std::vector<icl8u>& icl::filter::LUTOp::getLUT

(

)

const

return the current used lut, of a 0-sized vector if current mode is levels-mode

icl8u icl::filter::LUTOp::getQuantizationLevels

(

)

const

returns the current count of quatization levels or 0 if current mode is lut-mode

bool icl::filter::LUTOp::isLevelsSet

(

)

const

retruns whether current mode is levels-mode

bool icl::filter::LUTOp::isLUTSet

(

)

const

retruns whether current mode is lut-mode

static void icl::filter::LUTOp::reduceBits	(	const core::Img8u *	src,
		core::Img8u *	dst,
		icl8u	levels
	)		[static]

specialization of a lut transformation to reduce the number colors levels image a given image

Parameters:

src	source image
dst	destination image
levels	count of quantization levels to use

void icl::filter::LUTOp::setLUT

(

const std::vector< icl8u > &

lut

)

sets the current lut and switches to the lut-mode

Parameters:

lut	new lut vector to use

void icl::filter::LUTOp::setQuantizationLevels

(

int

levels

)

sets current count of quatization levels and switches to the levels-mode

Parameters:

levels

new count of quantization levels

static void icl::filter::LUTOp::simple	(	const core::Img8u *	src,
		core::Img8u *	dst,
		const std::vector< icl8u > &	lut
	)		[static]

simple lut transformation dst(p) = lut(src(p))

Parameters:

src	source image
dst	destination image
lut	lut-vector to used

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Member Data Documentation

bool icl::filter::LUTOp::m_bLevelsSet [private]

bool icl::filter::LUTOp::m_bLutSet [private]

core::Img8u* icl::filter::LUTOp::m_poBuffer [private]

icl8u icl::filter::LUTOp::m_ucQuantizationLevels [private]

std::vector<icl8u> icl::filter::LUTOp::m_vecLUT [private]

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

• /home/jenkins/workspace/icl-manual-trunk/icl-manual/ICLFilter/src/ICLFilter/LUTOp.h