#include <gpu.hpp>

Public Types
enum	KeypointLayout { X_ROW = 0, Y_ROW, LAPLACIAN_ROW, OCTAVE_ROW, SIZE_ROW, ANGLE_ROW, HESSIAN_ROW, ROWS_COUNT }

Public Member Functions
	SURF_GPU ()
	the default constructor More...

	SURF_GPU (double _hessianThreshold, int _nOctaves=4, int _nOctaveLayers=2, bool _extended=false, float _keypointsRatio=0.01f, bool _upright=false)
	the full constructor taking all the necessary parameters More...

int	descriptorSize () const
	returns the descriptor size in float's (64 or 128) More...

void	uploadKeypoints (const std::vector< KeyPoint > &keypoints, GpuMat &keypointsGPU)
	upload host keypoints to device memory More...

void	downloadKeypoints (const GpuMat &keypointsGPU, std::vector< KeyPoint > &keypoints)
	download keypoints from device to host memory More...

void	downloadDescriptors (const GpuMat &descriptorsGPU, std::vector< float > &descriptors)
	download descriptors from device to host memory More...

void	operator() (const GpuMat &img, const GpuMat &mask, GpuMat &keypoints)

void	operator() (const GpuMat &img, const GpuMat &mask, GpuMat &keypoints, GpuMat &descriptors, bool useProvidedKeypoints=false)

void	operator() (const GpuMat &img, const GpuMat &mask, std::vector< KeyPoint > &keypoints)

void	operator() (const GpuMat &img, const GpuMat &mask, std::vector< KeyPoint > &keypoints, GpuMat &descriptors, bool useProvidedKeypoints=false)

void	operator() (const GpuMat &img, const GpuMat &mask, std::vector< KeyPoint > &keypoints, std::vector< float > &descriptors, bool useProvidedKeypoints=false)

void	releaseMemory ()

Public Attributes
double	hessianThreshold

int	nOctaves

int	nOctaveLayers

bool	extended

bool	upright

float	keypointsRatio
	max keypoints = min(keypointsRatio * img.size().area(), 65535) More...

GpuMat	sum

GpuMat	mask1

GpuMat	maskSum

GpuMat	intBuffer

GpuMat	det

GpuMat	trace

GpuMat	maxPosBuffer

Member Enumeration Documentation

§ KeypointLayout

enum cv::gpu::SURF_GPU::KeypointLayout

Enumerator
X_ROW
Y_ROW
LAPLACIAN_ROW
OCTAVE_ROW
SIZE_ROW
ANGLE_ROW
HESSIAN_ROW
ROWS_COUNT

Constructor & Destructor Documentation

§ SURF_GPU() [1/2]

cv::gpu::SURF_GPU::SURF_GPU ( )

the default constructor

§ SURF_GPU() [2/2]

cv::gpu::SURF_GPU::SURF_GPU	(	double	_hessianThreshold,
		int	_nOctaves = `4`,
		int	_nOctaveLayers = `2`,
		bool	_extended = `false`,
		float	_keypointsRatio = `0.01f`,
		bool	_upright = `false`
	)

explicit

the full constructor taking all the necessary parameters

Member Function Documentation

§ descriptorSize()

int cv::gpu::SURF_GPU::descriptorSize ( ) const

returns the descriptor size in float's (64 or 128)

§ downloadDescriptors()

void cv::gpu::SURF_GPU::downloadDescriptors	(	const GpuMat &	descriptorsGPU,
		std::vector< float > &	descriptors
	)

download descriptors from device to host memory

§ downloadKeypoints()

void cv::gpu::SURF_GPU::downloadKeypoints	(	const GpuMat &	keypointsGPU,
		std::vector< KeyPoint > &	keypoints
	)

download keypoints from device to host memory

§ operator()() [1/5]

void cv::gpu::SURF_GPU::operator()	(	const GpuMat &	img,
		const GpuMat &	mask,
		GpuMat &	keypoints
	)

finds the keypoints using fast hessian detector used in SURF supports CV_8UC1 images keypoints will have nFeature cols and 6 rows keypoints.ptr<float>(X_ROW)[i] will contain x coordinate of i'th feature keypoints.ptr<float>(Y_ROW)[i] will contain y coordinate of i'th feature keypoints.ptr<float>(LAPLACIAN_ROW)[i] will contain laplacian sign of i'th feature keypoints.ptr<float>(OCTAVE_ROW)[i] will contain octave of i'th feature keypoints.ptr<float>(SIZE_ROW)[i] will contain size of i'th feature keypoints.ptr<float>(ANGLE_ROW)[i] will contain orientation of i'th feature keypoints.ptr<float>(HESSIAN_ROW)[i] will contain response of i'th feature

§ operator()() [2/5]

void cv::gpu::SURF_GPU::operator()	(	const GpuMat &	img,
		const GpuMat &	mask,
		GpuMat &	keypoints,
		GpuMat &	descriptors,
		bool	useProvidedKeypoints = `false`
	)

finds the keypoints and computes their descriptors. Optionally it can compute descriptors for the user-provided keypoints and recompute keypoints direction

§ operator()() [3/5]

void cv::gpu::SURF_GPU::operator()	(	const GpuMat &	img,
		const GpuMat &	mask,
		std::vector< KeyPoint > &	keypoints
	)

§ operator()() [4/5]

void cv::gpu::SURF_GPU::operator()	(	const GpuMat &	img,
		const GpuMat &	mask,
		std::vector< KeyPoint > &	keypoints,
		GpuMat &	descriptors,
		bool	useProvidedKeypoints = `false`
	)

§ operator()() [5/5]

void cv::gpu::SURF_GPU::operator()	(	const GpuMat &	img,
		const GpuMat &	mask,
		std::vector< KeyPoint > &	keypoints,
		std::vector< float > &	descriptors,
		bool	useProvidedKeypoints = `false`
	)

§ releaseMemory()

void cv::gpu::SURF_GPU::releaseMemory ( )

§ uploadKeypoints()

void cv::gpu::SURF_GPU::uploadKeypoints	(	const std::vector< KeyPoint > &	keypoints,
		GpuMat &	keypointsGPU
	)

upload host keypoints to device memory

Member Data Documentation

§ det

GpuMat cv::gpu::SURF_GPU::det

§ extended

bool cv::gpu::SURF_GPU::extended

§ hessianThreshold

double cv::gpu::SURF_GPU::hessianThreshold

§ intBuffer

GpuMat cv::gpu::SURF_GPU::intBuffer

§ keypointsRatio

float cv::gpu::SURF_GPU::keypointsRatio

max keypoints = min(keypointsRatio * img.size().area(), 65535)

§ mask1

GpuMat cv::gpu::SURF_GPU::mask1

§ maskSum

GpuMat cv::gpu::SURF_GPU::maskSum

§ maxPosBuffer

GpuMat cv::gpu::SURF_GPU::maxPosBuffer

§ nOctaveLayers

int cv::gpu::SURF_GPU::nOctaveLayers

§ nOctaves

int cv::gpu::SURF_GPU::nOctaves

§ sum

GpuMat cv::gpu::SURF_GPU::sum

§ trace

GpuMat cv::gpu::SURF_GPU::trace

§ upright

bool cv::gpu::SURF_GPU::upright

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

nonfree/include/opencv2/nonfree/gpu.hpp

Public Types

Public Member Functions

Public Attributes