A Parameterless Line Segment and Elliptical Arc Detector with Enhanced Ellipse Fitting
نویسندگان
چکیده
We propose a combined line segment and elliptical arc detector, which formally guarantees the control of the number of false positives and requires no parameter tuning. The accuracy of the detected elliptical features is improved by using a novel non-iterative ellipse fitting technique, which merges the algebraic distance with the gradient orientation. The performance of the detector is evaluated on computer-generated images and on natural images.
منابع مشابه
A Fast and Robust Ellipse-Detection Method Based on Sorted Merging
A fast and robust ellipse-detection method based on sorted merging is proposed in this paper. This method first represents the edge bitmap approximately with a set of line segments and then gradually merges the line segments into elliptical arcs and ellipses. To achieve high accuracy, a sorted merging strategy is proposed: the merging degrees of line segments/elliptical arcs are estimated, and ...
متن کاملProduct Evaluation In Elliptical Helical Pipe Bending
This research proposes a computation approach to address the evaluation of end product machining accuracy in elliptical surfaced helical pipe bending using 6dof parallel manipulator as a pipe bender. The target end product is wearable metal muscle supporters used in build-to-order welfare product manufacturing. This paper proposes a product testing model that mainly corrects the surface directi...
متن کاملEfficient randomized algorithms for robust estimation of circular arcs and aligned ellipses
Fitting two-dimensional conic sections (e.g., circular and elliptical arcs) to a finite collection of points in the plane is an important problem in statistical estimation and has significant industrial applications. Recently there has been a great deal of interest in robust estimators, because of their lack of sensitivity to outlying data points. The basic measure of the robustness of an estim...
متن کاملMicrosoft Word - john_icita_ell.rtf
-In this paper, we present a fast and robust ellipse extraction method. The proposed method can extract ellipses with high accuracy and speed from images with complicated backgrounds. It consists of two parts. First, we extract arc segments from an ellipse approximated by short straight lines that are extracted by a fast line extraction algorithm. Second, the arc segments are used to calculate ...
متن کاملEecient Randomized Algorithms for Robust Estimation of Circular Arcs and Aligned Ellipses*
Fitting two-dimensional conic sections (e.g., circular and elliptical arcs) to a nite collection of points in the plane is an important problem in statistical estimation and has signiicant industrial applications. Recently there has been a great deal of interest in robust estimators, because of their lack of sensitivity to outlying data points. The basic measure of the robustness of an estimato...
متن کامل