کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
744527 | 894390 | 2012 | 18 صفحه PDF | دانلود رایگان |
Industrial applications like robot-aided welding, automated inspection, and 3D measurements require 3D points to be captured from the surfaces of objects and processed to calculate the information-of-interest. The lack of research focused on fitting ellipses to 3D laser profile data, and the intrinsic features that distinguish it from 2D digital images, motivated us to conduct a comparative study involving the most popular ellipse-fitting methods. After describing our laser profile scanning system, and a survey of ellipse-fitting methods, we compare, using extensive experiments performed with synthetic and real data, the fitting algorithms in terms of stability and accuracy with respect to a variety of factors. The estimate obtained with the best method is used to initialize a robust non-linear iterative ellipse fitting method. Finally, we describe a novel method for the construction of cylindrical surfaces from estimated elliptical sections.
► We present a comparative study involving the most popular ellipse-fitting methods.
► We use data captured by a laser profile scanner mounted on an industrial robot.
► The best method from previous study used to initialize best ellipse-fitting method.
► A novel method to construct a cylindrical surface from the elliptical sections.
Journal: Optics and Lasers in Engineering - Volume 50, Issue 9, September 2012, Pages 1242–1259