SiftGPUWrapper Class Reference

Interface for SiftGPU The class is used as an interface to SiftGPU. It's a singleton class. More...

#include <sift_gpu_wrapper.h>

List of all members.

Public Member Functions
void	detect (const cv::Mat &image, cv::vector< cv::KeyPoint > &keypoints, std::vector< float > &descriptors, const cv::Mat &mask=cv::Mat()) const
int	match (const std::vector< float > &descriptors1, int num1, const std::vector< float > &descriptors2, int num2, std::vector< cv::DMatch > *matches)
virtual	~SiftGPUWrapper ()
Static Public Member Functions
static void	destroyInstance ()
static SiftGPUWrapper *	getInstance ()
Private Member Functions
void	cvMatToSiftGPU (const cv::Mat &image, unsigned char *siftImage) const
void	initializeMatcher ()
	SiftGPUWrapper ()
void	writePGM (FILE *fp, unsigned char *data, int width, int height)
Private Attributes
unsigned char *	data
	image as texture
bool	error
	error happened?
QMutex	gpu_mutex
bool	isMatcherInitialized
	true, if matcher was initialized
SiftMatchGPU *	matcher
	siftgpu matcher
SiftGPU *	siftgpu
	siftgpu instance
Static Private Attributes
static const int	imageHeight = 480
	height of the image constant for Kinect
static const int	imageWidth = 640
	width of the image constant for Kinect
static SiftGPUWrapper *	instance
	singleton instance

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Detailed Description

Interface for SiftGPU The class is used as an interface to SiftGPU. It's a singleton class.

Definition at line 32 of file sift_gpu_wrapper.h.

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Constructor & Destructor Documentation

virtual SiftGPUWrapper::~SiftGPUWrapper

(

)

[virtual]

Destructor

SiftGPUWrapper::SiftGPUWrapper

(

)

[private]

private constructor, because of singleton

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Member Function Documentation

void SiftGPUWrapper::cvMatToSiftGPU	(	const cv::Mat &	image,
		unsigned char *	siftImage
	)		const [private]

Building a siftgpu compatible unsigned char pointer out of the image cv::Mat (converts a cv matrix into an OpenGL texture array)

Parameters:

image	the image
siftImage	the transformed image (output)

static void SiftGPUWrapper::destroyInstance

(

)

[static]

void SiftGPUWrapper::detect	(	const cv::Mat &	image,
		cv::vector< cv::KeyPoint > &	keypoints,
		std::vector< float > &	descriptors,
		const cv::Mat &	mask = cv::Mat()
	)		const

Method, which is used for calculating the features and descriptors. The first parameter is the image, the second one a reference to a keypoint vector and the third parameter can be used for defining a mask

Parameters:

image	the image
keypoints	a cv::vector of cv::Keypoints, which is used for storing the keypoints
mask	a mask (see OpenCV)

Returns:

a pointer to the descriptor values

static SiftGPUWrapper* SiftGPUWrapper::getInstance

(

)

[static]

Return instance of the singleton class

void SiftGPUWrapper::initializeMatcher

(

)

[private]

int SiftGPUWrapper::match	(	const std::vector< float > &	descriptors1,
		int	num1,
		const std::vector< float > &	descriptors2,
		int	num2,
		std::vector< cv::DMatch > *	matches
	)

Is used for matching two descriptors

Parameters:

descriptors1	the first descriptor
num1	size of the first descriptor
descriptors2	the second descriptor
num2	size of the second descriptor
matches	is used to store the matches

Returns:

the summed distance of the corresponding descriptors

void SiftGPUWrapper::writePGM	(	FILE *	fp,
		unsigned char *	data,
		int	width,
		int	height
	)		[private]

For testing purposes: write a .pgm file of the SiftGPU image

Parameters:

fp	a filepointer
data	the imagedata (e.g. OpenGL texture)
width	width
height	height

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Member Data Documentation

unsigned char* SiftGPUWrapper::data [private]

image as texture

Definition at line 104 of file sift_gpu_wrapper.h.

bool SiftGPUWrapper::error [private]

error happened?

Definition at line 103 of file sift_gpu_wrapper.h.

QMutex SiftGPUWrapper::gpu_mutex [mutable, private]

Definition at line 105 of file sift_gpu_wrapper.h.

const int SiftGPUWrapper::imageHeight = 480 [static, private]

height of the image constant for Kinect

Definition at line 97 of file sift_gpu_wrapper.h.

const int SiftGPUWrapper::imageWidth = 640 [static, private]

width of the image constant for Kinect

Definition at line 96 of file sift_gpu_wrapper.h.

SiftGPUWrapper* SiftGPUWrapper::instance [static, private]

singleton instance

Definition at line 99 of file sift_gpu_wrapper.h.

bool SiftGPUWrapper::isMatcherInitialized [private]

true, if matcher was initialized

Definition at line 102 of file sift_gpu_wrapper.h.

SiftMatchGPU* SiftGPUWrapper::matcher [private]

siftgpu matcher

Definition at line 101 of file sift_gpu_wrapper.h.

SiftGPU* SiftGPUWrapper::siftgpu [private]

siftgpu instance

Definition at line 100 of file sift_gpu_wrapper.h.

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

• sift_gpu_wrapper.h