opentl::cvprocess::ColorHistShader Class Reference

This is a shader example for computing the JOINT HISTOGRAM between a template set of model points (grey values) and the corresponding grey values at projected camera locations. The histogram can be used for computing mutual information

• on-board (which requires another render pass, and the shaders)
• or downloaded back to the CPU, and there processed further.

More...

Inherits opentl::cvprocess::GpuStdShaders.

List of all members.

Classes
struct	Param
Public Member Functions
	ColorHistShader (Param *param=NULL, opentl::core::cvdata::Image *inputImage=NULL)
	Constructor.
void	copyHistoFromGPU (opentl::core::cvdata::ColourHist2d &MDestination)
	Copy back the histogram from GPU.
virtual void	execute ()
	Shader execution (overrides the base class method).
opentl::cvprocess::GlFbo *	getCurrentFbo ()
	Get the current FBO (if we want to upload textures from outside, we need to bind to the current FBO!) TODO: This is hacking the class... make it with another function, for uploading/downloading the textures from outside!
opentl::core::cvdata::TextureGpu *	getSrcTex2 ()
Param &	params ()
	Get/Set parameters for this class.
virtual void	prepareDisplayList ()
	Prepare display lists required for 1:1 pixel to texel mapping.
virtual	~ColorHistShader ()
	Destructor.

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Detailed Description

This is a shader example for computing the JOINT HISTOGRAM between a template set of model points (grey values) and the corresponding grey values at projected camera locations. The histogram can be used for computing mutual information

• on-board (which requires another render pass, and the shaders)
• or downloaded back to the CPU, and there processed further.

NOTE: Derived class from GpuStdShaders.

Author:

Giorgio Panin <panin@in.tum.de>

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Constructor & Destructor Documentation

opentl::cvprocess::ColorHistShader::ColorHistShader	(	Param *	param = NULL,
		opentl::core::cvdata::Image *	inputImage = NULL
	)

Constructor.

Parameters:

	param	Structure of parameters for this class
	inputImage	(optional) Pointer to the image to be processed by this shader (it will eventually be used by the execute() stage)

virtual opentl::cvprocess::ColorHistShader::~ColorHistShader

(

)

[virtual]

Destructor.

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Member Function Documentation

void opentl::cvprocess::ColorHistShader::copyHistoFromGPU

(

opentl::core::cvdata::ColourHist2d &

MDestination

)

Copy back the histogram from GPU.

Parameters:

MDestination

Destination histogram (the source is the GPU texture mColourHistoTexture)

virtual void opentl::cvprocess::ColorHistShader::execute

(

)

[virtual]

Shader execution (overrides the base class method).

Reimplemented from opentl::cvprocess::GpuStdShaders.

opentl::cvprocess::GlFbo* opentl::cvprocess::ColorHistShader::getCurrentFbo

(

)

[inline]

Get the current FBO (if we want to upload textures from outside, we need to bind to the current FBO!) TODO: This is hacking the class... make it with another function, for uploading/downloading the textures from outside!

opentl::core::cvdata::TextureGpu* opentl::cvprocess::ColorHistShader::getSrcTex2

(

)

[inline]

Param& opentl::cvprocess::ColorHistShader::params

(

)

Get/Set parameters for this class.

Returns:

Reference to parameter struct

virtual void opentl::cvprocess::ColorHistShader::prepareDisplayList

(

)

[virtual]

Prepare display lists required for 1:1 pixel to texel mapping.

Reimplemented from opentl::cvprocess::GpuStdShaders.