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conicfit (version 1.0.4)

Algorithms for Fitting Circles, Ellipses and Conics Based on the Work by Prof. Nikolai Chernov

Description

Geometric circle fitting with Levenberg-Marquardt (a, b, R), Levenberg-Marquardt reduced (a, b), Landau, Spath and Chernov-Lesort. Algebraic circle fitting with Taubin, Kasa, Pratt and Fitzgibbon-Pilu-Fisher. Geometric ellipse fitting with ellipse LMG (geometric parameters) and conic LMA (algebraic parameters). Algebraic ellipse fitting with Fitzgibbon-Pilu-Fisher and Taubin.

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Version

Install

install.packages('conicfit')

Monthly Downloads

1,161

Version

1.0.4

License

GPL (>= 3)

Maintainer

Jose Gama

Last Published

October 5th, 2015

Functions in conicfit (1.0.4)

fitbookstein

Linear ellipse fit using bookstein constraint
CircleFitByPratt

Algebraic circle fit by Pratt
EllipseDirectFit

Algebraic ellipse fit method by Fitzgibbon-Pilu-Fisher
LMcircleFit

Geometric circle fit (minimizing orthogonal distances) based on the Levenberg-Marquardt method
LMreducedCircleFit

Geometric circle fit (minimizing orthogonal distances) based on the Levenberg-Marquardt method
fit.ellipseLMG

Fitting an ellipse using Implicit method
CircleFitByTaubin

Algebraic circle fit (Taubin method)
CircleFitBySpath

Geometric circle fit by Spath
ResidualsG

Projecting a given set of points onto an ellipse
AtoG

Conversion of algebraic parameters to geometric parameters
calculateCircle

Generate points from a circle
CircleFitByLandau

Geometric circle fit (minimizing orthogonal distances) by Landau algorithm
JmatrixLMG

Compute the Jacobian matrix using geometric parameters
estimateInitialGuessCircle

Estimate Initial Guess Circle values
CircleFitByKasa

Algebraic circle fit (Kasa method)
CurrentIteration

Internal conicfit functions
JmatrixLMA

Compute the Jacobian matrix using algebraic parameters
Residuals.hyperbola

Projecting a given set of points onto an hyperbola
Residuals.parabola

Projecting a given set of points onto an parabola
GtoA

Conversion of geometric parameters to algebraic parameters
calculateEllipse

Generate points from a ellipse
fit.conicLMA

Fitting a conic to a given set of points (Implicit method)
ellipticity

Formulas for the ellipse
EllipseFitByTaubin

Algebraic ellipse fit by Taubin
Residuals.ellipse

Projecting a given set of points onto an ellipse