Class for computing SIFT features in a CByteImage. More...

#include <SIFTFeatureCalculator.h>

Inheritance diagram for CSIFTFeatureCalculator:

Public Member Functions
int	CalculateFeatures (const CByteImage pImage, CDynamicArray pResultList, bool bManageMemory=true)

	CSIFTFeatureCalculator (float fThreshold=0.05f, int nOctaves=3)

int	GetNumberOfOctaves ()

float	GetThreshold ()

void	SetNumberOfOctaves (int nOctaves)

void	SetThreshold (float fThreshold)

	~CSIFTFeatureCalculator ()

Public Member Functions inherited from CFeatureCalculatorInterface
virtual	~CFeatureCalculatorInterface ()

Static Public Member Functions
static void	CreateSIFTDescriptors (const CFloatMatrix pImage, CDynamicArray pResultList, float x, float y, float scale, float sigma, const float *pOrientationWeights, bool bManageMemory=true, bool bPerform80PercentCheck=true)

static void	CreateSIFTDescriptors (const CByteImage pImage, CDynamicArray pResultList, float x, float y, float scale=1.0f, bool bManageMemory=true, bool bPerform80PercentCheck=true)

static void	CreateSIFTDescriptors (const CByteImage *pImage, CDynamicArrayTemplatePointer< CFeatureEntry > &resultList, float x, float y, float scale=1.0f, bool bPerform80PercentCheck=true)

static void	InitializeVariables ()

Private Member Functions
void	FindScaleSpaceExtrema (const CFloatMatrix *pImage, float scale, int nOctave)

Static Private Member Functions
static void	DetermineDominatingOrientations (const CFloatMatrix pAngleMatrix, const CFloatMatrix pMagnitudeMatrix, CDynamicArrayTemplate< float > &orientations, bool bPerform80PercentCheck)

Private Attributes
bool	m_bManageMemory

float	m_fThreshold

int	m_nOctaves

CDynamicArray *	m_pResultList

Static Private Attributes
static float	diffk_ = sqrtf(k_ * k_ - 1)

static float	diffsigma0_ = SIGMA0 * SIGMA0 - prescaledsigma_ * prescaledsigma_

static float	edgethreshold_ = (EDGE_THRESHOLD + 1) * (EDGE_THRESHOLD + 1) / EDGE_THRESHOLD

static float	k_ = powf(2.0f, 1.0f / S)

static int	m_bInitialized = false

static float	prescaledsigma_ = PRESIGMA * PRESCALE

static float	SIFTDescriptorWeights [256]

static float	SIFTDiffSigmas [MAX_SCALES]

static float *	SIFTGaussianFilters [MAX_SCALES]

static int	SIFTKernelRadius [MAX_SCALES]

static float	SIFTOrientationWeights [256 *(MAX_SCALES+1)]

static int	SIFTPointers [256]

static float	SIFTSigmas [MAX_SCALES]

static float	SIFTWeights [256]

Detailed Description

Class for computing SIFT features in a CByteImage.

Definition at line 81 of file SIFTFeatureCalculator.h.

Constructor & Destructor Documentation

CSIFTFeatureCalculator::CSIFTFeatureCalculator	(	float	fThreshold = `0.05f`,
		int	nOctaves = `3`
	)

Definition at line 92 of file SIFTFeatureCalculator.cpp.

CSIFTFeatureCalculator::~CSIFTFeatureCalculator ( )

Definition at line 103 of file SIFTFeatureCalculator.cpp.

Member Function Documentation

int CSIFTFeatureCalculator::CalculateFeatures	(	const CByteImage *	pImage,
		CDynamicArray *	pResultList,
		bool	bManageMemory = `true`
	)

virtual

Implements CFeatureCalculatorInterface.

Definition at line 167 of file SIFTFeatureCalculator.cpp.

void CSIFTFeatureCalculator::CreateSIFTDescriptors	(	const CFloatMatrix *	pImage,
		CDynamicArray *	pResultList,
		float	x,
		float	y,
		float	scale,
		float	sigma,
		const float *	pOrientationWeights,
		bool	bManageMemory = `true`,
		bool	bPerform80PercentCheck = `true`
	)

static

Definition at line 279 of file SIFTFeatureCalculator.cpp.

void CSIFTFeatureCalculator::CreateSIFTDescriptors	(	const CByteImage *	pImage,
		CDynamicArray *	pResultList,
		float	x,
		float	y,
		float	scale = `1.0f`,
		bool	bManageMemory = `true`,
		bool	bPerform80PercentCheck = `true`
	)

static

Definition at line 392 of file SIFTFeatureCalculator.cpp.

void CSIFTFeatureCalculator::CreateSIFTDescriptors	(	const CByteImage *	pImage,
		CDynamicArrayTemplatePointer< CFeatureEntry > &	resultList,
		float	x,
		float	y,
		float	scale = `1.0f`,
		bool	bPerform80PercentCheck = `true`
	)

static

Definition at line 501 of file SIFTFeatureCalculator.cpp.

void CSIFTFeatureCalculator::DetermineDominatingOrientations	(	const CFloatMatrix *	pAngleMatrix,
		const CFloatMatrix *	pMagnitudeMatrix,
		CDynamicArrayTemplate< float > &	orientations,
		bool	bPerform80PercentCheck
	)

staticprivate

Definition at line 204 of file SIFTFeatureCalculator.cpp.

void CSIFTFeatureCalculator::FindScaleSpaceExtrema	(	const CFloatMatrix *	pImage,
		float	scale,
		int	nOctave
	)

private

Definition at line 640 of file SIFTFeatureCalculator.cpp.

int CSIFTFeatureCalculator::GetNumberOfOctaves ( )

inline

Definition at line 99 of file SIFTFeatureCalculator.h.

float CSIFTFeatureCalculator::GetThreshold ( )

inline

Definition at line 98 of file SIFTFeatureCalculator.h.

void CSIFTFeatureCalculator::InitializeVariables ( )

static

Definition at line 112 of file SIFTFeatureCalculator.cpp.

void CSIFTFeatureCalculator::SetNumberOfOctaves ( int nOctaves )

inline

Definition at line 96 of file SIFTFeatureCalculator.h.

void CSIFTFeatureCalculator::SetThreshold ( float fThreshold )

inline

Definition at line 95 of file SIFTFeatureCalculator.h.

Member Data Documentation

float CSIFTFeatureCalculator::diffk_ = sqrtf(k_ * k_ - 1)

staticprivate

Definition at line 123 of file SIFTFeatureCalculator.h.

float CSIFTFeatureCalculator::diffsigma0_ = SIGMA0 * SIGMA0 - prescaledsigma_ * prescaledsigma_

staticprivate

Definition at line 125 of file SIFTFeatureCalculator.h.

float CSIFTFeatureCalculator::edgethreshold_ = (EDGE_THRESHOLD + 1) * (EDGE_THRESHOLD + 1) / EDGE_THRESHOLD

staticprivate

Definition at line 121 of file SIFTFeatureCalculator.h.

float CSIFTFeatureCalculator::k_ = powf(2.0f, 1.0f / S)

staticprivate

Definition at line 122 of file SIFTFeatureCalculator.h.

int CSIFTFeatureCalculator::m_bInitialized = false

staticprivate

Definition at line 137 of file SIFTFeatureCalculator.h.

bool CSIFTFeatureCalculator::m_bManageMemory

private

Definition at line 118 of file SIFTFeatureCalculator.h.

float CSIFTFeatureCalculator::m_fThreshold

private

Definition at line 114 of file SIFTFeatureCalculator.h.

int CSIFTFeatureCalculator::m_nOctaves

private

Definition at line 115 of file SIFTFeatureCalculator.h.

CDynamicArray* CSIFTFeatureCalculator::m_pResultList

private

Definition at line 117 of file SIFTFeatureCalculator.h.

float CSIFTFeatureCalculator::prescaledsigma_ = PRESIGMA * PRESCALE

staticprivate

Definition at line 124 of file SIFTFeatureCalculator.h.

float CSIFTFeatureCalculator::SIFTDescriptorWeights

staticprivate

Definition at line 130 of file SIFTFeatureCalculator.h.

float CSIFTFeatureCalculator::SIFTDiffSigmas

staticprivate

Definition at line 132 of file SIFTFeatureCalculator.h.

float* CSIFTFeatureCalculator::SIFTGaussianFilters[MAX_SCALES]

staticprivate

Definition at line 134 of file SIFTFeatureCalculator.h.

int CSIFTFeatureCalculator::SIFTKernelRadius

staticprivate

Definition at line 135 of file SIFTFeatureCalculator.h.

float CSIFTFeatureCalculator::SIFTOrientationWeights

staticprivate

Definition at line 129 of file SIFTFeatureCalculator.h.

int CSIFTFeatureCalculator::SIFTPointers

staticprivate

Definition at line 127 of file SIFTFeatureCalculator.h.

float CSIFTFeatureCalculator::SIFTSigmas

staticprivate

Definition at line 133 of file SIFTFeatureCalculator.h.

float CSIFTFeatureCalculator::SIFTWeights

staticprivate

Definition at line 128 of file SIFTFeatureCalculator.h.

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

Public Member Functions

Static Public Member Functions

Private Member Functions

Static Private Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation