AlignmentResult2D Class Reference

A set of parameters that stores the result of alignment operation. More...

#include <cvb/foundation/curve.hpp>

Public Member Functions
const Matrix2D &	Rotation () const noexcept
	Gets the estimated rotation. More...
const Vector2D< double > &	Translation () const noexcept
	Gets the estimated translation. More...
double	MeanDistance () const noexcept
	Gets the mean distance between reference and aligned curve. More...
size_t	NumIterations () const noexcept
	Gets the number of iterations needed for alignment. More...

Friends
AlignmentResult2D	AlignCurve (const std::vector< Point2D< double > > &, const std::vector< Point2D< double > > &, const AlignmentConfiguration &)
	Aligns two 2D curves via an iterative closest point method considering consensus correspondence for better shape alignment. More...

Detailed Description

A set of parameters that stores the result of alignment operation.

Member Function Documentation

MeanDistance()

double MeanDistance ( ) const

inlinenoexcept

Gets the mean distance between reference and aligned curve.

Returns

Mean distance between reference and aligned curve.

Exceptions

Does	not throw any exception.

NumIterations()

size_t NumIterations ( ) const

inlinenoexcept

Gets the number of iterations needed for alignment.

Returns

The number of iterations needed for alignment.

Exceptions

Does	not throw any exception.

Rotation()

const Matrix2D & Rotation ( ) const

inlinenoexcept

Gets the estimated rotation.

Returns

The estimated rotation.

Exceptions

Does	not throw any exception.

Translation()

const Vector2D< double > & Translation ( ) const

inlinenoexcept

Gets the estimated translation.

Returns

The estimated translation.

Exceptions

Does	not throw any exception.

Friends And Related Function Documentation

AlignCurve

AlignmentResult2D AlignCurve ( const std::vector< Point2D< double > > &  curve, const std::vector< Point2D< double > > &  curveToBeAligned, const AlignmentConfiguration &  config = AlignmentConfiguration()  )

friend

Aligns two 2D curves via an iterative closest point method considering consensus correspondence for better shape alignment.

Parameters

[in]	curve	Reference curve.
[in]	curveToBeAligned	Curve to be aligned to curve.
[in]	config	Configuration of alignment.

Returns

Alignment result.

Exceptions

Any	exception derived from std::exception including CvbException.

The method used here is a version of the ICP (iterative closest point) method. It uses a consensus metric to find the correspondence between points to stabilize the iterations needed in the alignment method. It supports only rigid transformations for the alignment.

If not enough points within a given consent are found a classical ICP step is performed by finding correspondences solely based on nearest neighbours without any feasibility check.