asrl::GpuIntegralImageProcessor Class Reference

A class that reserves memory on the GPU for creating integral images. More...

#include <GpuIntegralImageProcessor.hpp>

List of all members.

Public Member Functions
	GpuIntegralImageProcessor (int width, int height)
	~GpuIntegralImageProcessor ()
void	upload (cv::Mat &img)
void	process (cv::Mat &img, GpuIntegralImage &outImage, cudaStream_t stream=0)
void	process (GpuIntegralImage &outImage, cudaStream_t stream=0)
int	width ()
int	height ()
Private Attributes
boost::shared_ptr< unsigned char >	char_data
	Initial storage on the gpu of the unsigned char data.
boost::shared_ptr< float >	norm_data
	Storage of floats on the GPU, for the standard orientation of the image.
boost::shared_ptr< float >	trans_data
	A third buffer on the GPU used for the transpose operation.
size_t	char_pitch
	The pitch (spacing between rows of data) of rows of the char_data array, in elements.
size_t	norm_pitch
	The pitch (spacing between rows of data) of rows of the norm_data array, in elements.
size_t	trans_pitch
	The pitch (spacing between rows of data) of rows of the trans_data array, in elements.
CUDPPHandle	rowPlan
	The CUDPP configuration handle for a parallel prefix sum operation on the norm_data.
CUDPPHandle	colPlan
	The CUDPP configuration handle for a parallel prefix sum operation on the trans_data.
int	m_width
	The width of the input image (pixels).
int	m_height
	The height of the input image (pixels).

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Detailed Description

A class that reserves memory on the GPU for creating integral images.

This class sets up the necessary functions and memory for GpuIntegralImage_kernel.cu to compute the integral image.

Definition at line 55 of file GpuIntegralImageProcessor.hpp.

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Constructor & Destructor Documentation

asrl::GpuIntegralImageProcessor::GpuIntegralImageProcessor	(	int	width,
		int	height
	)

The constructor reserves memory for integral image processing given that the source image is widthheight

Parameters:

	width	The width of the expected input image
	height	The height of the expected input image

Definition at line 44 of file GpuIntegralImageProcessor.cpp.

asrl::GpuIntegralImageProcessor::~GpuIntegralImageProcessor

(

)

Destructor

Definition at line 74 of file GpuIntegralImageProcessor.cpp.

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Member Function Documentation

int asrl::GpuIntegralImageProcessor::height

(

)

[inline]

Returns:

The expected height of the input image (pixels)

Definition at line 112 of file GpuIntegralImageProcessor.hpp.

void asrl::GpuIntegralImageProcessor::process	(	GpuIntegralImage &	outImage,
		cudaStream_t	stream = 0
	)

Creates the integral image. The image must have been previously uploaded to the device by calling

 upload(img)

Parameters:

	outImage
	stream

Definition at line 109 of file GpuIntegralImageProcessor.cpp.

void asrl::GpuIntegralImageProcessor::process	(	cv::Mat &	img,
		GpuIntegralImage &	outImage,
		cudaStream_t	stream = 0
	)

Uploads the image to the device then creates the integral image. This is the equivalent of calling

 upload(img);
 process(outImage,stream);

Parameters:

	img	The input image. The image must be tightly packed, of type CV_U8C1, and width()height()
	outImage	The output integral image
	stream	An optional cuda stream for performing the processing

Definition at line 104 of file GpuIntegralImageProcessor.cpp.

void asrl::GpuIntegralImageProcessor::upload

(

cv::Mat &

img

)

Uploads the image to the device.

Parameters:

img

The input image. The image must be tightly packed, of type CV_U8C1, and width()height()

Definition at line 93 of file GpuIntegralImageProcessor.cpp.

int asrl::GpuIntegralImageProcessor::width

(

)

[inline]

Returns:

The expected width of the input image (pixels)

Definition at line 107 of file GpuIntegralImageProcessor.hpp.

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Member Data Documentation

boost::shared_ptr<unsigned char> asrl::GpuIntegralImageProcessor::char_data [private]

Initial storage on the gpu of the unsigned char data.

Definition at line 115 of file GpuIntegralImageProcessor.hpp.

size_t asrl::GpuIntegralImageProcessor::char_pitch [private]

The pitch (spacing between rows of data) of rows of the char_data array, in elements.

Definition at line 123 of file GpuIntegralImageProcessor.hpp.

CUDPPHandle asrl::GpuIntegralImageProcessor::colPlan [private]

The CUDPP configuration handle for a parallel prefix sum operation on the trans_data.

Definition at line 132 of file GpuIntegralImageProcessor.hpp.

int asrl::GpuIntegralImageProcessor::m_height [private]

The height of the input image (pixels).

Definition at line 137 of file GpuIntegralImageProcessor.hpp.

int asrl::GpuIntegralImageProcessor::m_width [private]

The width of the input image (pixels).

Definition at line 135 of file GpuIntegralImageProcessor.hpp.

boost::shared_ptr<float> asrl::GpuIntegralImageProcessor::norm_data [private]

Storage of floats on the GPU, for the standard orientation of the image.

Definition at line 118 of file GpuIntegralImageProcessor.hpp.

size_t asrl::GpuIntegralImageProcessor::norm_pitch [private]

The pitch (spacing between rows of data) of rows of the norm_data array, in elements.

Definition at line 125 of file GpuIntegralImageProcessor.hpp.

CUDPPHandle asrl::GpuIntegralImageProcessor::rowPlan [private]

The CUDPP configuration handle for a parallel prefix sum operation on the norm_data.

Definition at line 130 of file GpuIntegralImageProcessor.hpp.

boost::shared_ptr<float> asrl::GpuIntegralImageProcessor::trans_data [private]

A third buffer on the GPU used for the transpose operation.

Definition at line 120 of file GpuIntegralImageProcessor.hpp.

size_t asrl::GpuIntegralImageProcessor::trans_pitch [private]

The pitch (spacing between rows of data) of rows of the trans_data array, in elements.

Definition at line 127 of file GpuIntegralImageProcessor.hpp.

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

• GpuIntegralImageProcessor.hpp
• GpuIntegralImageProcessor.cpp