icl::filter::GradientImage Class Reference

Class for calculation of gradient image information. More...

#include <GradientImage.h>

Public Types
enum	calculationMode { calculateXYOnly =0, calculateIntensity =1, calculateAngle =2, calculateAll =3 }
	flags to indicate which gradient information should be calculated More...

Public Member Functions
	GradientImage ()
	Empty constructor. More...
void	update (const core::ImgBase *src, calculationMode mode=calculateAll)
	Main function calculates new gradient image information. More...
const core::Img16s &	getGradXImage () const
	return current X-Gradient image More...
const core::Img16s &	getGradYImage () const
	return current Y-Gradient image More...
const core::Img32f &	getGradIntensityImage () const
	return current Gradient-Intensity image More...
const core::Img32f &	getGradAngleImage () const
	return current Gradient-Angle image More...
void	normalize ()
	internally normalizes all images to range [0,255] More...

Private Attributes
core::Img16s	m_oBuf
core::Img16s	m_oX
core::Img16s	m_oY
core::Img32f	m_oI
core::Img32f	m_oA

Detailed Description

Class for calculation of gradient image information.

The GradientImage class provides functionalities for the calculation of the following gradient image information:

• X-Gradient (using 3x3 Sobel-X Convolution Kenrnel)
• Y-Gradient (using 3x3 Sobel-Y Convolution Kenrnel)
• Gradient Intensity (internally accelerated using a LUT)
• Gradient Angle (also accelerated using a LUT)

For best performance, the input image is restricted to be of type Img8u. The update function will firstly calculate X- and Y-Gradient information using a ConvolutionOp object. X- and Y-Gradient image have range [0,255] now (result of Sobel-Filter is internally scaled to the range of the used datatype icl8u. Further calculation of gradient intensity and gradient angle depends on the given calculation mode flag.

Member Enumeration Documentation

calculationMode

enum icl::filter::GradientImage::calculationMode

flags to indicate which gradient information should be calculated

Enumerator
calculateXYOnly	only calculate X- and Y-Gradient
calculateIntensity	X/Y-Gradient and intensity map.
calculateAngle	X/Y-Gradient and angle map.
calculateAll	X/Y-Gradient, intensity- and angle map.

Constructor & Destructor Documentation

GradientImage()

icl::filter::GradientImage::GradientImage ( )

inline

Empty constructor.

Member Function Documentation

getGradAngleImage()

const core::Img32f& icl::filter::GradientImage::getGradAngleImage ( ) const

inline

return current Gradient-Angle image

getGradIntensityImage()

const core::Img32f& icl::filter::GradientImage::getGradIntensityImage ( ) const

inline

return current Gradient-Intensity image

getGradXImage()

const core::Img16s& icl::filter::GradientImage::getGradXImage ( ) const

inline

return current X-Gradient image

getGradYImage()

const core::Img16s& icl::filter::GradientImage::getGradYImage ( ) const

inline

return current Y-Gradient image

normalize()

void icl::filter::GradientImage::normalize

(

)

internally normalizes all images to range [0,255]

update()

void icl::filter::GradientImage::update	(	const core::ImgBase *	src,
		calculationMode	mode = calculateAll
	)

Main function calculates new gradient image information.

Member Data Documentation

m_oA

core::Img32f icl::filter::GradientImage::m_oA

private

m_oBuf

core::Img16s icl::filter::GradientImage::m_oBuf

private

m_oI

core::Img32f icl::filter::GradientImage::m_oI

private

m_oX

core::Img16s icl::filter::GradientImage::m_oX

private

m_oY

core::Img16s icl::filter::GradientImage::m_oY

private

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

• /Users/alneuman/vm/icl/ICLFilter/src/ICLFilter/GradientImage.h