mds::img::CHarris< I > Class Template Reference

Harris corner detector. More...

#include <mdsHarris.h>

Inheritance diagram for mds::img::CHarris< I >:

List of all members.

Public Types
enum	{ TEMPLATE_PARAMETER_IS_NOT_IMAGE = I::CLASS_IMAGE }
	Check that I is an image. More...
typedef CImageCornerDetector< I >	base
	Image corner detector base.
typedef base::tImage	tImage
	Image type.
typedef base::tPixel	tPixel
	Image pixel type.
Public Member Functions
	CHarris (double dSigma, double dThreshold, double dKappa)
	Constructor.
double	getKappa ()
	Returns width of the filter for getting corners.
double	getThreshold ()
	Returns threshold of the non-maximal suppression algorithm.
bool	operator() (const tImage &SrcImage, tImage &DstImage)
	Corner detection in a given image.
void	setKappa (double dKappa)
	Sets width of the filter for gettig corners.
void	setThreshold (double dThreshold)
	Sets threshold of the non-maximal suppression algorithm.
	~CHarris ()
	Destructor.
Protected Member Functions
bool	checkNeighbours (CFImage &Image, tSize x, tSize y, tFloatPixel T)
	Returns true if any neighbouring pixel has greater value than a given threshold.
Protected Attributes
double	m_dKappa
double	m_dThreshold
	Harris corner detector parameters.
CGaussFilter< CFImage >	m_GaussFilter
	Gaussian filter.
CSobelX< CFImage >	m_SobelX
CSobelY< CFImage >	m_SobelY

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Detailed Description

template<class I>
class mds::img::CHarris< I >

Harris corner detector.

• It's better to smoooth input image using the Gaussian filter beforehand.
• Parameter I is a used image type.

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Member Typedef Documentation

template<class I >

typedef CImageCornerDetector<I> mds::img::CHarris< I >::base

Image corner detector base.

template<class I >

typedef base::tImage mds::img::CHarris< I >::tImage

Image type.

Reimplemented from mds::img::CImageCornerDetector< I >.

template<class I >

typedef base::tPixel mds::img::CHarris< I >::tPixel

Image pixel type.

Reimplemented from mds::img::CImageCornerDetector< I >.

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Member Enumeration Documentation

template<class I >

anonymous enum [inherited]

Check that I is an image.

You will see name of this enum somewhere in compiler error message if the type I is not image.

Enumerator:

TEMPLATE_PARAMETER_IS_NOT_IMAGE

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Constructor & Destructor Documentation

template<class I >

mds::img::CHarris< I >::CHarris	(	double	dSigma,
		double	dThreshold,
		double	dKappa
	)

Constructor.

• Standard deviation of gaussian window used to estimate eigen values.
• Cornerness threshold.
• Tuneable parameter.

template<class I >

mds::img::CHarris< I >::~CHarris

(

)

Destructor.

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Member Function Documentation

template<class I >

bool CHarris::checkNeighbours	(	CFImage &	Image,
		tSize	x,
		tSize	y,
		tFloatPixel	T
	)		[protected]

Returns true if any neighbouring pixel has greater value than a given threshold.

template<class I >

double mds::img::CHarris< I >::getKappa

(

)

Returns width of the filter for getting corners.

template<class I >

double mds::img::CHarris< I >::getThreshold

(

)

Returns threshold of the non-maximal suppression algorithm.

template<class I >

bool CHarris::operator()	(	const tImage &	SrcImage,
		tImage &	DstImage
	)		[virtual]

Corner detection in a given image.

• Magnitude image is produced.
• Returns false on failure.

Implements mds::img::CImageCornerDetector< I >.

template<class I >

void CHarris::setKappa

(

double

dKappa

)

Sets width of the filter for gettig corners.

template<class I >

void CHarris::setThreshold

(

double

dThreshold

)

Sets threshold of the non-maximal suppression algorithm.

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Member Data Documentation

template<class I >

double mds::img::CHarris< I >::m_dKappa [protected]

template<class I >

double mds::img::CHarris< I >::m_dThreshold [protected]

Harris corner detector parameters.

template<class I >

CGaussFilter<CFImage> mds::img::CHarris< I >::m_GaussFilter [protected]

Gaussian filter.

template<class I >

CSobelX<CFImage> mds::img::CHarris< I >::m_SobelX [protected]

template<class I >

CSobelY<CFImage> mds::img::CHarris< I >::m_SobelY [protected]

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

• mdsHarris.h
• mdsHarris.hxx