01122126

Component

https://doi.org/10.3141/2098-04

http://scholar.google.com...vani&publication_year=2009

In many three-dimensional (3-D) laser scanner applications, high relative precision (relative dimensions within the registered point cloud) is sufficient; in contrast, highway infrastructure (HI) applications require good relative precision and high absolute accuracy. Thus, precise and robust georeferencing is critical, and robust work flows are needed to reduce the likelihood and impact of human errors. HI applications have a fairly unique combination of challenges, including longer-range requirements, long linear geometry for complete jobs, tall structures, and dark pavement scanned at a high incidence angle. These factors motivate standardized protocols and metrics to characterize and evaluate scanner performance and to develop confidence limits for the scanner data in such applications. The primary contribution in this study is a set of standard test protocols for the characterization and evaluation of 3-D laser scanner performance that users can conduct in easily accessible facilities. These evaluations focus on issues significant in HI survey applications, work flows, and data flows. An example performance evaluation is provided for several commercially available 3-D laser scanners. This study provides the needed scientific basis for data-driven deployment of this valuable measurement tool in HI applications. It also provides recommendations and guidelines that will promote consistent and correct use of 3-D laser scanners. The guidelines clarify the common limitations of 3-D laser scanners and recommend mitigation methods; this information will help engineers and surveyors to select the right scanner and determine optimum scanning settings for highway applications.

01138792

09-1995

English

pp 29-40

2009

Transportation Research Record: Journal of the Transportation Research Board

9780309126144

Print

Figures; Photos; References (13) ; Tables (1)

Accuracy; Guidelines; Highway engineering; Lasers; Precision; Road construction; Surveying

3-D laser scanning; Laser scanners; Test protocols

Construction; Highways; I50: Construction and Supervision of Construction

TRIS, TRB, ATRI

Jan 30 2009 6:18PM

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• Evaluation of Dowel Alignment Constructability in Portland Cement Concrete Pavements
• Methods for Evaluating Longitudinal Joint Quality in Asphalt Pavements
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• Radio Frequency Identification Tracking Technology Applied to Testing of Transportation Construction Materials
• Strategies for Design and Construction of High-Reflectance Asphalt Pavements
• Temperature Behavior of Pervious Concrete Systems
• Use of Stay-in-Place Forms for Concrete Bridge Decks in Tennessee