icl::filter::GradientImage Class Reference

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

#include <GradientImage.h>

List of all members.

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

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

icl::filter::GradientImage::GradientImage

(

)

[inline]

Empty constructor.

---

Member Function Documentation

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

(

)

const [inline]

return current Gradient-Angle image

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

(

)

const [inline]

return current Gradient-Intensity image

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

(

)

const [inline]

return current X-Gradient image

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

(

)

const [inline]

return current Y-Gradient image

void icl::filter::GradientImage::normalize

(

)

internally normalizes all images to range [0,255]

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

Main function calculates new gradient image information.

---

Member Data Documentation

core::Img32f icl::filter::GradientImage::m_oA [private]

core::Img16s icl::filter::GradientImage::m_oBuf [private]

core::Img32f icl::filter::GradientImage::m_oI [private]

core::Img16s icl::filter::GradientImage::m_oX [private]

core::Img16s icl::filter::GradientImage::m_oY [private]

---

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

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