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

Modified Susan corner detector. More...

#include <mdsSusan.h>

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

List of all members.

Public Types
enum	{ TEMPLATE_PARAMETER_IS_NOT_IMAGE = I::CLASS_IMAGE }
	Check that I is an image. More...
enum	{ MAX_LUT = 255 }
	Maximal value stored in the internal lookup table. More...
enum	{ LUT_SIZE = 2 * MAX_LUT + 1 }
	Size of the internal lookup table. More...
enum	{ DIFF_THRESHOLD = 700 }
	Threshold used to suppress non-corner points. 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
	CSusanDetector (double dThreshold, double dWidth=20.0)
	Constructor.
double	getThreshold ()
	Returns detection threshold.
double	getWidth ()
	Returns the width parameter.
bool	operator() (const tImage &SrcImage, tImage &DstImage)
	Corner detection in a given image.
void	setThreshold (double dThreshold)
	Sets the detection threshold.
void	setWidth (double dWidth)
	Sets the width parameter.
	~CSusanDetector ()
	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.
int	getDiff (int a, int b)
	Returns difference of two given pixels.
void	initLUT ()
	Initializes internal lookup table.
Protected Attributes
double	m_dInvWidth
double	m_dThreshold
	Susan corner detector parameters.
double	m_dWidth
mds::math::CStaticVector< int, LUT_SIZE >	m_LUT
	Internal lookup table used for fast computation of the exp() function.

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Detailed Description

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

Modified Susan corner detector.

• Parameter I is a used image type.

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Member Typedef Documentation

template<class I >

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

Image corner detector base.

template<class I >

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

Image type.

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

template<class I >

typedef base::tPixel mds::img::CSusanDetector< 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

template<class I >

anonymous enum

Maximal value stored in the internal lookup table.

Enumerator:

MAX_LUT

template<class I >

anonymous enum

Size of the internal lookup table.

Enumerator:

LUT_SIZE

template<class I >

anonymous enum

Threshold used to suppress non-corner points.

Enumerator:

DIFF_THRESHOLD

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Constructor & Destructor Documentation

template<class I >

CSusanDetector::CSusanDetector	(	double	dThreshold,
		double	dWidth = 20.0
	)

Constructor.

• First parameter represents normalized detection threshold.
• Second parameter affects evaluation of difference of two pixels.

template<class I >

mds::img::CSusanDetector< I >::~CSusanDetector

(

)

Destructor.

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Member Function Documentation

template<class I >

bool CSusanDetector::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 >

int CSusanDetector::getDiff	(	int	a,
		int	b
	)		[protected]

Returns difference of two given pixels.

template<class I >

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

(

)

Returns detection threshold.

template<class I >

double mds::img::CSusanDetector< I >::getWidth

(

)

Returns the width parameter.

template<class I >

void CSusanDetector::initLUT

(

)

[protected]

Initializes internal lookup table.

template<class I >

bool CSusanDetector::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 CSusanDetector::setThreshold

(

double

dThreshold

)

Sets the detection threshold.

template<class I >

void CSusanDetector::setWidth

(

double

dWidth

)

Sets the width parameter.

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Member Data Documentation

template<class I >

double mds::img::CSusanDetector< I >::m_dInvWidth [protected]

template<class I >

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

Susan corner detector parameters.

template<class I >

double mds::img::CSusanDetector< I >::m_dWidth [protected]

template<class I >

mds::math::CStaticVector<int, LUT_SIZE> mds::img::CSusanDetector< I >::m_LUT [protected]

Internal lookup table used for fast computation of the exp() function.

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

• CornerDetection/mdsSusan.h
• CornerDetection/mdsSusan.hxx