Module imagingbook.common

Package imagingbook.common.geometry.fitting.line

Class OrthogonalLineFitEigen

java.lang.Object

imagingbook.common.geometry.fitting.line.OrthogonalLineFitEigen

All Implemented Interfaces:

LineFit

public class OrthogonalLineFitEigen
extends Object
implements LineFit

This class implements line fitting by orthogonal regression to a set of 2D points using eigendecomposition. See Sec. 10.2.2 (Alg. 10.1) of [1] for additional details.

[1] W. Burger, M.J. Burge, Digital Image Processing – An Algorithmic Introduction, 3rd ed, Springer (2022).

Version:

2022/09/29

See Also:

• OrthogonalLineFitSvd
• OrthogonalLineFitHomogeneous

Constructor Summary

Constructors

Constructor	Description
OrthogonalLineFitEigen(Pnt2d[] points)	Constructor, performs a orthogonal regression fit to the specified points.

Method Summary

Modifier and Type	Method	Description
double[]	getLineParameters()	Returns the parameters [A, B, C] for the AlgebraicLine associated with this line fit.
int	getSize()	Returns the size of the point set used for calculating this line fit.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface imagingbook.common.geometry.fitting.line.LineFit

getLine, getSquaredOrthogonalError

Constructor Details

OrthogonalLineFitEigen

public OrthogonalLineFitEigen(Pnt2d[] points)

Constructor, performs a orthogonal regression fit to the specified points. At least two different points are required.

Parameters:

points - an array with at least 2 points

Method Details

getSize

public int getSize()

Description copied from interface: LineFit

Returns the size of the point set used for calculating this line fit.

Specified by:

getSize in interface LineFit

Returns:

the number of sample points used for fitting

getLineParameters

public double[] getLineParameters()

Description copied from interface: LineFit

Returns the parameters [A, B, C] for the AlgebraicLine associated with this line fit. To be implemented by concrete classes. null is returned if no fit was found.

Specified by:

getLineParameters in interface LineFit

Returns:

algebraic line parameters [A, B, C]

See Also:

• AlgebraicLine