BTLocalMatcherT< T > Class Template Reference

Birchfield-Tomasi sampling-insensitive intensity local matcher. More...

#include <BTLocalMatcherT.h>

Inheritance diagram for BTLocalMatcherT< T >:

List of all members.

Public Member Functions
	BTLocalMatcherT ()
virtual	~BTLocalMatcherT ()
virtual bool	setImagePair (const OvImageT< T > &i1, const OvImageT< T > &i2)
virtual bool	setParams (int nparams, double *params)
virtual const OvImageT< double >	getMatch (int shiftx, int shifty)
virtual const OvImageT< double >	getRawMatch (int shiftx, int shifty)
Protected Attributes
OvImageT< double >	mImage1
OvImageT< double >	mImage2
OvImageT< double >	mMin1
OvImageT< double >	mMax1
OvImageT< double >	mMin2
OvImageT< double >	mMax2
double	alpha

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Detailed Description

template<typename T>
class BTLocalMatcherT< T >

Birchfield-Tomasi sampling-insensitive intensity local matcher.

The BTLocalMatcherT class is a subclass of OvLocalMatcherT and implements the Birchfield-Tomasi method for intensity matching.

Author:

Abhijit Ogale

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Constructor & Destructor Documentation

template<typename T>

BTLocalMatcherT< T >::BTLocalMatcherT

(

)

Default constructor with no parameters

template<typename T>

BTLocalMatcherT< T >::~BTLocalMatcherT

(

)

[virtual]

Destructor

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Member Function Documentation

template<typename T>

const OvImageT< double > BTLocalMatcherT< T >::getMatch	(	int	shiftx,
		int	shifty = 0
	)			[virtual]

Used to retrieve results of matching the two images with a relative 2D translation. Note: Values of the result are between 0 to 1 always. Parameter alpha is used, and can be set using setParams.

Parameters:

	shiftx	horizontal relative shift
	shifty	vertical relative shift

Returns:

resulting single channel image if sucessful (values between 0 (no match) and 1 (match)).

See also:

getRawMatch(int shiftx, int shifty)

setParams(int nparams, double*params)

Implements OvLocalMatcherT< T >.

template<typename T>

const OvImageT< double > BTLocalMatcherT< T >::getRawMatch	(	int	shiftx,
		int	shifty = 0
	)			[virtual]

Used to retrieve raw results of matching the two images with a relative 2D translation. Note: The range of values of the result and their interpretation depends on the particular matcher being used.

Parameters:

	shiftx	horizontal relative shift
	shifty	vertical relative shift

Returns:

result image if sucessful, which has same number of channels as the input images.

See also:

getMatch(int shiftx, int shifty)

Implements OvLocalMatcherT< T >.

template<typename T>

bool BTLocalMatcherT< T >::setImagePair	(	const OvImageT< T > &	i1,
		const OvImageT< T > &	i2
	)			[virtual]

Method used for specifying the image pair to be matched. This method precomputes stuff needed for Birchfield-Tomasi matching.

Parameters:

	i1	the first image
	i2	the second image

Returns:

true if successful (both images are of the same dimensions).

Implements OvLocalMatcherT< T >.

template<typename T>

bool BTLocalMatcherT< T >::setParams	(	int	nparams,
		double *	params
	)			[virtual]

Used for specifying any parameters required by the matcher.

Parameters:

	nparams	number of parameters which are being passed
	params	the values of the parameters

Returns:

true if successful.

Implements OvLocalMatcherT< T >.

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Member Data Documentation

template<typename T>

double BTLocalMatcherT< T >::alpha [protected]

Alpha is a constant used to convert raw pixel intensity matches dI into the range 0 to 1 using exp(-alpha*dI/255), where alpha is specified by the user as follows:

 
   double params[] = {20.0};
	btmatcher.setMatchingParams(1,params);
 

In this example, alpha is set to 20. Smaller values of alpha cause more smoothing.

See also:

setMatchingParams(int nparams, double*params)

template<typename T>

OvImageT<double> BTLocalMatcherT< T >::mImage1 [protected]

copy of input image 1.

template<typename T>

OvImageT<double> BTLocalMatcherT< T >::mImage2 [protected]

copy of input image 2

template<typename T>

OvImageT<double> BTLocalMatcherT< T >::mMax1 [protected]

precomputed maximum image from i1 for speeding up Birchfield Tomasi matching.

template<typename T>

OvImageT<double> BTLocalMatcherT< T >::mMax2 [protected]

precomputed maximum image from i2 for speeding up Birchfield Tomasi matching.

template<typename T>

OvImageT<double> BTLocalMatcherT< T >::mMin1 [protected]

precomputed minimum image from i1 for speeding up Birchfield Tomasi matching.

template<typename T>

OvImageT<double> BTLocalMatcherT< T >::mMin2 [protected]

precomputed minimum image from i2 for speeding up Birchfield Tomasi matching.

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

• BTLocalMatcherT.h

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