fitbookstein {conicfit}

Linear ellipse fit using bookstein constraint

Description

fitbookstein Linear ellipse fit using bookstein constraint

conic2parametric Diagonalise A - find Q, D such at A = Q' * D * Q

fitggk Linear least squares with the Euclidean-invariant constraint Trace(A) = 1

Usage

fitbookstein(x)

Arguments

x

array of sample data

Value

list(z, a, b, alpha)

list with fitted ellipse parameters

Author(s)

Jose Gama

Source

Richard Brown, May 28, 2007 http://www.mathworks.com/matlabcentral/fileexchange/15125-fitellipse-m/content/demo/html/ellipsedemo.html

References

Richard Brown, May 28, 2007 http://www.mathworks.com/matlabcentral/fileexchange/15125-fitellipse-m/content/demo/html/ellipsedemo.html

W. Gander, G. H. Golub, R. Strebel, 1994 Least-Squares Fitting of Circles and Ellipses BIT Numerical Mathematics, Springer