Methods and considerations to determine sphere center from terrestrial laser scanner point cloud data. (6th September 2017)

• Record Type: Journal Article
• Authors: Rachakonda, Prem; Muralikrishnan, Bala; Cournoyer, Luc; Cheok, Geraldine; Lee, Vincent; Shilling, Meghan; Sawyer, Daniel
• Is Part Of: Measurement science & technology. Volume 28:Number 10(2017:Oct.)
• Publication Date: 2017-09-06
• Subjects: point cloud segmentation -- spheres -- sphere fitting -- terrestrial laser scanners -- 3D imaging systems -- documentary standards -- algorithms; Physical measurements -- Periodicals; Scientific apparatus and instruments -- Periodicals; Equipment and Supplies -- Periodicals; Science -- instrumentation -- Periodicals; Technology -- instrumentation -- Periodicals; Mesures physiques -- Périodiques; Physical measurements; Scientific apparatus and instruments; Periodicals; 502.87
• DOI: 10.1088/1361-6501/aa8011
• Languages: English
• ISSNs: 0957-0233

Abstract

Abstract: The Dimensional Metrology Group at the National Institute of Standards and Technology is performing research to support the development of documentary standards within the ASTM E57 committee. This committee is addressing the point-to-point performance evaluation of a subclass of 3D imaging systems called terrestrial laser scanners (TLSs), which are laser-based and use a spherical coordinate system. This paper discusses the usage of sphere targets for this effort, and methods to minimize the errors due to the determination of their centers. The key contributions of this paper include methods to segment sphere data from a TLS point cloud, and the study of some of the factors that influence the determination of sphere centers.