lti::fourierDescriptor Class Reference

This class generates fourier descriptors. More...

#include <ltiFourierDescriptor.h>

Inheritance diagram for lti::fourierDescriptor:

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Collaboration diagram for lti::fourierDescriptor:

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List of all members.

Classes
class	parameters
	the parameters for the class fourierDescriptor More...
Public Member Functions
	fourierDescriptor ()
	fourierDescriptor (const fourierDescriptor &other)
virtual	~fourierDescriptor ()
virtual const char *	getTypeName () const
bool	apply (const borderPoints &input, vector< float > &xRealOutput, vector< float > &xImagOutput, vector< float > &yRealOutput, vector< float > &yImagOutput) const
bool	apply (const vector< float > &xRealInput, const vector< float > &xImagInput, const vector< float > &yRealInput, const vector< float > &yImagInput, borderPoints &output) const
fourierDescriptor &	copy (const fourierDescriptor &other)
virtual functor *	clone () const
const parameters &	getParameters () const

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Detailed Description

This class generates fourier descriptors.

The input is a list of border points. The output are four vectors of fourier descriptors: x value (Real,Imaginary) and y value (Real,Imaginary)

The algorithm: http://iul.cs.byu.edu/morse/550-F95/node29.html A demo: http://www.stud.ee.ethz.ch/~buc/brechbuehler/fourdem.html

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Constructor & Destructor Documentation

lti::fourierDescriptor::fourierDescriptor

(

)

default constructor

lti::fourierDescriptor::fourierDescriptor

(

const fourierDescriptor &

other

)

copy constructor

Parameters:

other

the object to be copied

virtual lti::fourierDescriptor::~fourierDescriptor

(

)

[virtual]

destructor

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Member Function Documentation

bool lti::fourierDescriptor::apply	(	const vector< float > &	xRealInput,
		const vector< float > &	xImagInput,
		const vector< float > &	yRealInput,
		const vector< float > &	yImagInput,
		borderPoints &	output
	)			const

Reconstructs borderpoints with given Input and the specified parameter "origin".

Parameters:

	xRealInput	vector<float> real abscissa value of fourier descriptor.
	xImagInput	vector<float> imaginary abscissa value of fourier descriptor.
	yRealInput	vector<float> real ordinate value of fourier descriptor.
	yImagInput	vector<float> imaginary ordinate value of fourier descriptor.
	output	borderPoints with the output data.

bool lti::fourierDescriptor::apply	(	const borderPoints &	input,
		vector< float > &	xRealOutput,
		vector< float > &	xImagOutput,
		vector< float > &	yRealOutput,
		vector< float > &	yImagOutput
	)			const

With the given borderpoints and the parameter "origin" (default: 0,0) the apply method calculates the fourier descriptors (abscissa real and imaginary value + ordinate real and imaginary value).

Parameters:

	input	borderPoints with the input data.
	xRealOutput	vector<float> where the fourier descriptor of the abscissa will be left (real value).
	xImagOutput	vector<float> where the fourier descriptor of the abscissa will be left (imaginary value).
	yRealOutput	vector<float> where the fourier descriptor of the ordinate will be left (real value).
	yImagOutput	vector<float> where the fourier descriptor of the ordinate will be left (imaginary value).

virtual functor* lti::fourierDescriptor::clone

(

)

const [virtual]

returns a pointer to a clone of this functor.

Implements lti::functor.

fourierDescriptor& lti::fourierDescriptor::copy

(

const fourierDescriptor &

other

)

copy data of "other" functor.

Parameters:

other

the functor to be copied

Returns:

a reference to this functor object

Reimplemented from lti::functor.

const parameters& lti::fourierDescriptor::getParameters

(

)

const

returns used parameters

Reimplemented from lti::transform.

virtual const char* lti::fourierDescriptor::getTypeName

(

)

const [virtual]

returns the name of this type ("fourierDescriptor")

Reimplemented from lti::transform.

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

• ltiFourierDescriptor.h