ReinhardLocalOperator Class Reference

The ReinhardLocalOperator class is an implementation of Erik Reinhard's local tone mapping operator. More...

Inheritance diagram for ReinhardLocalOperator:

List of all members.

Public Slots
void	updateKeyValue (int value)
void	updateSharpening (int value)
void	toneMap ()
Public Member Functions
virtual void	setupUi (QWidget *widget)
virtual const HdrImage *	getToneMappedImage () const
virtual void	setImage (const HdrImage *image)
virtual QString	name () const
Private Member Functions
fftw_complex *	convolveFft (fftw_complex *f1, fftw_complex *f2)
Private Attributes
Ui::ReinhardLocalOperator	ui
const HdrImage *	inputImage
HdrImage *	outputImage
int	width
int	height
double	avLum
double	keyValue
double	sharpening
QString	msg
fftw_complex *	responses [9]

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Detailed Description

The ReinhardLocalOperator class is an implementation of Erik Reinhard's local tone mapping operator.

This class implements ToneMappingOperator interface.

FFTW library is used to calculate convolutions efficiently.

Definition at line 28 of file ReinhardLocalOperator.h.

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Member Function Documentation

fftw_complex * ReinhardLocalOperator::convolveFft	(	fftw_complex *	f1,
		fftw_complex *	f2
	)		[private]

Computes the convolution of f1 by f2 in the Fourier domain. A convolution in the Fourier domain is actually a complex multiplication.

Definition at line 256 of file ReinhardLocalOperator.cpp.

const HdrImage * ReinhardLocalOperator::getToneMappedImage

(

)

const [virtual]

Returns a constant pointer to the tone mapped image.

Implements ToneMappingOperator.

Definition at line 80 of file ReinhardLocalOperator.cpp.

QString ReinhardLocalOperator::name

(

)

const [virtual]

Returns the operator name: Reinhard Local Operator.

Implements ToneMappingOperator.

Definition at line 64 of file ReinhardLocalOperator.cpp.

void ReinhardLocalOperator::setImage

(

const HdrImage *

_inputImage )

[virtual]

Sets the image to be tone mapped.

This function also initializes the operator by computing :

1. the average luminance
2. the 9 required gaussian filters
3. the 9 convolutions of the image by the gaussian filters (called responses)

and then calls toneMap().

For improved efficiency, the convolutions are computed in the Fourier domain.

Implements ToneMappingOperator.

Definition at line 98 of file ReinhardLocalOperator.cpp.

void ReinhardLocalOperator::setupUi

(

QWidget *

widget )

[virtual]

Sets up the user interface inside widget.

Implements ToneMappingOperator.

Definition at line 69 of file ReinhardLocalOperator.cpp.

void ReinhardLocalOperator::toneMap

(

)

[slot]

Tone maps the image.

This function emit imageUpdated() when tone mapping is finished.

Definition at line 273 of file ReinhardLocalOperator.cpp.

void ReinhardLocalOperator::updateKeyValue

(

int

value )

[slot]

Reads the key value from the user interface.

This function is typically called when the key value slider is moved.

Definition at line 318 of file ReinhardLocalOperator.cpp.

void ReinhardLocalOperator::updateSharpening

(

int

value )

[slot]

Reads the sharpening parameter from the user interface.

This function is typically called when the sharpening parameter slider is moved.

Definition at line 329 of file ReinhardLocalOperator.cpp.

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

• Src/Operators/ReinhardLocalOperator/ReinhardLocalOperator.h
• Src/Operators/ReinhardLocalOperator/ReinhardLocalOperator.cpp