title: A comparative evaluation of length estimators of digital curves.
abstract: This paper compares previously published length estimators in image analysis having digitized curves as input. The evaluation uses multigrid convergence (theoretical results and measured speed of convergence) and further measures as criteria. This paper also suggests a new gradient-based method for length estimation, and combines a previously proposed length estimator for straight segments with a polygonalization method.
authors.affiliation: ERIC Laboratory, Université Lumière Lyon 2, Bron Cedex, France. david.coeurjolly@univ-lyon2.fr
authors.forename: David
authors.initials: D
authors.lastname: Coeurjolly
authors.forename: Reinhard
authors.initials: R
authors.lastname: Klette
mesh_terms: D000465:Algorithms; D019985:Benchmarking / Q000379:methods*; D003196:Computer Graphics; D007089:Image Enhancement / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000379:methods* / Q000592:standards*; D009716:Numerical Analysis, Computer-Assisted; D010363:Pattern Recognition, Automated; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted