TemplateMatchChannel Class Reference

Convolves each level of its pyramid with a feature template. More...

#include <Channels/TemplateMatchChannel.H>

Inheritance diagram for TemplateMatchChannel:

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Collaboration diagram for TemplateMatchChannel:

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List of all members.

Public Member Functions
	TemplateMatchChannel (OptionManager &mgr, const Image< float > &filt)
	Construct with the standard params, plus a filter specification.
virtual	~TemplateMatchChannel ()
	Virtual destructor.
void	findBestMatch (const Rectangle &r, Point2D< int > &matchpos, int &match_lev, float &score)
	Look for the most likely template match in a given rectangular region.
virtual void	drawResults (Image< PixRGB< byte > > &traj, const Rectangle &foa)
	Draws a box in traj around the last best template match found.
Protected Member Functions
virtual void	start1 ()
Protected Attributes
Point2D< int >	itsBestMatchPos
int	itsBestMatchLev
float	itsBestMatchScore
Dims	itsFiltDims

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Detailed Description

Convolves each level of its pyramid with a feature template.

This type of channel is useful for searching for a specific feature shape at multiple scales. For example, it is used by VisualCortex to search for possible pedestrians in an input image.

Definition at line 48 of file TemplateMatchChannel.H.

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Constructor & Destructor Documentation

TemplateMatchChannel::TemplateMatchChannel	(	OptionManager &	mgr,
		const Image< float > &	filt
	)

Construct with the standard params, plus a filter specification.

The filter is specified by a C array, which will be interpreted to have dimensions filt_x and filt_y. A private copy of the filter will be made, so the filt pointer does not have to be persistent.

Definition at line 54 of file TemplateMatchChannel.C.

TemplateMatchChannel::~TemplateMatchChannel

(

)

[virtual]

Virtual destructor.

Definition at line 65 of file TemplateMatchChannel.C.

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Member Function Documentation

void TemplateMatchChannel::drawResults	(	Image< PixRGB< byte > > &	traj,
		const Rectangle &	foa
	)			[virtual]

Draws a box in traj around the last best template match found.

Definition at line 105 of file TemplateMatchChannel.C.

References drawRect(), findBestMatch(), Dims::h(), Point2D< T >::i, max(), min(), Rectangle::tlbrI(), and Dims::w().

void TemplateMatchChannel::findBestMatch	(	const Rectangle &	r,
		Point2D< int > &	matchpos,
		int &	match_lev,
		float &	score
	)

Look for the most likely template match in a given rectangular region.

The position of the match in 0-level coordinates is returned in matchpos, the pyramid level at which the match was found is returned in match_lev, and a score rating the goodness of the match is returned in score.

Definition at line 74 of file TemplateMatchChannel.C.

References findMax(), SingleChannel::getImage(), ChannelBase::getInputDims(), OModelParam< T >::getVal(), Point2D< T >::i, Rectangle::left(), LevelSpec::levMax(), LevelSpec::levMin(), rescale(), and Rectangle::top().

Referenced by drawResults().

void TemplateMatchChannel::start1

(

)

[protected, virtual]

If you overload this, make sure you call SingleChannel::start1() at the beginning of your overload

Reimplemented from SingleChannel.

Reimplemented in PedestrianChannel.

Definition at line 68 of file TemplateMatchChannel.C.

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

• src/Channels/TemplateMatchChannel.H
• src/Channels/TemplateMatchChannel.C