cvr::surfLocalDescriptor Class Reference
[Feature Extraction]

Class surfLocalDescriptor. More...

#include <cvrSurfLocalDescriptor.h>

Inheritance diagram for cvr::surfLocalDescriptor:

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Collaboration diagram for cvr::surfLocalDescriptor:

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List of all members.

Classes
class	parameters
	The parameters for the class surfLocalDescriptor. More...
Public Types
enum	eOrientationMode { Ignore, Approximate, Cluster }
Public Member Functions
	surfLocalDescriptor ()
	surfLocalDescriptor (const parameters &par)
	surfLocalDescriptor (const surfLocalDescriptor &other)
virtual	~surfLocalDescriptor ()
bool	apply (const channel8 &src, const list< location > &locs, std::list< dvector > &desc) const
bool	apply (const channel &src, const list< location > &locs, std::list< dvector > &desc) const
bool	apply (const channel &src, const location &loc, dvector &desc) const
surfLocalDescriptor &	copy (const surfLocalDescriptor &other)
surfLocalDescriptor &	operator= (const surfLocalDescriptor &other)
virtual const std::string &	name () const
virtual surfLocalDescriptor *	clone () const
virtual surfLocalDescriptor *	newInstance () const
const parameters &	getParameters () const
bool	updateParameters ()

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Detailed Description

Class surfLocalDescriptor.

This class computes the SURF descriptor for given image locations, as explained in detail in the paper:

Herbert Bay, Tinne Tuytelaars, and Luc Van Gool. SURF: Speeded Up Robust Features. In Proceedings of the 9th European Conference on Computer Vision, May 2006. Available at http://www.vision.ee.ethz.ch/~surf/papers.html

The implementation is based on the interpretation of the paper, and produce different results than the ones obtained from the closed-source implementation of the authors. Any suggestions are always welcome.

See also:

surfLocalDescriptor::parameters.

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Member Enumeration Documentation

enum cvr::surfLocalDescriptor::eOrientationMode

Enumeration of the modes for the orientation considerations in the descriptor computation.

Enumerator:

Ignore	Ignore the orientation. This method is fast, but the locations have to occur on the same direction.
Approximate	The regions are never rotated, but the individual responses of the Haar filters will be considered as approximations of the oriented gaussian derivative which is steerable. The computation is fast but not as reliable.
Cluster	The location orientations will be discretized so that just a finite number of rotations need to be computed.

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Constructor & Destructor Documentation

cvr::surfLocalDescriptor::surfLocalDescriptor

(

)

Default constructor.

cvr::surfLocalDescriptor::surfLocalDescriptor

(

const parameters &

par

)

Construct a functor using the given parameters.

cvr::surfLocalDescriptor::surfLocalDescriptor

(

const surfLocalDescriptor &

other

)

Copy constructor.

Parameters:

other

the object to be copied

virtual cvr::surfLocalDescriptor::~surfLocalDescriptor

(

)

[virtual]

Destructor.

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Member Function Documentation

bool cvr::surfLocalDescriptor::apply	(	const channel &	src,
		const location &	loc,
		dvector &	desc
	)			const

Operates on the given argument.

Parameters:

	src	channel8 with the image to be described.
	loc	the locations to be described
	desc	resulting descritor computed for the given location.

Returns:

true if apply successful or false otherwise.

bool cvr::surfLocalDescriptor::apply	(	const channel &	src,
		const list< location > &	locs,
		std::list< dvector > &	desc
	)			const

Operates on the given argument.

Parameters:

	src	channel8 with the image to be described.
	locs	list of locations to be described
	desc	resulting descritors computed for each location.

Returns:

true if apply successful or false otherwise.

bool cvr::surfLocalDescriptor::apply	(	const channel8 &	src,
		const list< location > &	locs,
		std::list< dvector > &	desc
	)			const

Operates on the given argument.

Parameters:

	src	channel8 with the image to be described.
	locs	list of locations to be described
	desc	resulting descritors computed for each location.

Returns:

true if apply successful or false otherwise.

virtual surfLocalDescriptor* cvr::surfLocalDescriptor::clone

(

)

const [virtual]

Returns a pointer to a clone of this functor.

Implements cvr::functor.

surfLocalDescriptor& cvr::surfLocalDescriptor::copy

(

const surfLocalDescriptor &

other

)

Copy data of "other" functor.

Parameters:

other

the functor to be copied

Returns:

a reference to this functor object

const parameters& cvr::surfLocalDescriptor::getParameters

(

)

const

Returns used parameters.

Reimplemented from cvr::parametersManager.

virtual const std::string& cvr::surfLocalDescriptor::name

(

)

const [virtual]

Returns the complete name of the functor class.

Implements cvr::functor.

virtual surfLocalDescriptor* cvr::surfLocalDescriptor::newInstance

(

)

const [virtual]

Returns a pointer to a new instance of this functor.

Implements cvr::functor.

surfLocalDescriptor& cvr::surfLocalDescriptor::operator=

(

const surfLocalDescriptor &

other

)

Alias for copy member.

Parameters:

other

the functor to be copied

Returns:

a reference to this functor object

bool cvr::surfLocalDescriptor::updateParameters

(

)

[virtual]

Update the parameters.

Reimplemented from cvr::parametersManager.

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

• cvrSurfLocalDescriptor.h