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An Overview of Activities at NIST Towards the Proposed ASTM E57 3D Imaging System Point-to-Point Distance Standard



Prem K. Rachakonda, Balasubramanian Muralikrishnan, Katharine M. Shilling, Geraldine S. Cheok, Daniel S. Sawyer


The Dimensional Metrology Group (DMG) at the National Institute of Standards & Technology (NIST), along with various other organizations has been involved in the development of a documentary standard for 3D imaging instruments that acquire data in spherical coordinate system. NIST led this effort and possesses unique expertise for this task. This expertise comes from NIST’s prior experience in standardization activities related to laser trackers which also use spherical coordinate system and have very similar error sources. Terrestrial laser scanners (TLSs) are a class of 3D imaging systems that measure the 3D coordinates of an object in their work volume. A working group was established in 2013 within the ASTM E57.02 sub-committee that started addressing the performance evaluation of these instruments over their entire work volume. The proposed standard titled “Standard test method for evaluating the point-to-point distance measurement performance of spherical coordinate 3D imaging systems in the medium range” was submitted for balloting in the spring of 2017.The methods in the proposed standard were realized and tested at NIST before being incorporated into the document. This paper presents an overview of the work, the procedures and recommendations for evaluating TLSs that found consensus among the members of the working group and were included in the proposed standard.
Journal of the CMSC


3D imaging systems, laser scanners, documentary standards


Rachakonda, P. , Muralikrishnan, B. , Shilling, K. , Cheok, G. and Sawyer, D. (2017), An Overview of Activities at NIST Towards the Proposed ASTM E57 3D Imaging System Point-to-Point Distance Standard, Journal of the CMSC, [online], (Accessed April 14, 2024)
Created October 16, 2017, Updated July 12, 2018