StreetMapper Bridges the Highways Survey Gap

November 14, 2012 -- Terrametrix LLC, an Omaha based survey technology company, is using StreetMapper, the world’s most accurate mobile mapping system, to survey more than 7,000 bridges in California. Consulting to Caltrans, the California Department of Transportation, Terrametrix is collecting survey grade measurements using vehicle mounted lasers. By using the StreetMapper system Terremetrix is able to capture as built data of existing infrastructure at a fraction of the time and cost of traditional survey methods.

“The StreetMapper technology offers proven, survey grade accuracies with final positional accuracies of better than 0.03’ with appropriate survey control,” commented Michael R. Frecks, Terrametrix, LLC President. “Relative positional accuracies of better than 0.02’ in raw data make StreetMapper a very useful tool for bridge height surveys.”

Terrametrix was contracted by Caltrans to undertake detailed surveys of 7,250 bridges throughout the state of California. Driving the need were revised standards of the Federal Highway Administration bridge inspection programme. These standards required the longitude and latitude location of each bridge to be established as well as a measurement of minimum clearance, both horizontally and vertically. Caltrans specifically requested documentation at highway speeds, transparent to the travelling public, without impeding traffic – making StreetMapper the obvious choice.

Working with Allpoint Systems, Terrametrix developed an innovative workflow to process the 531 terabytes of data collected by the StreetMapper system. Automated feature extraction, using completed statistical algorithms, allows road surfaces to be identified, bridge data isolated, and noise, such as traffic on the highway, removed. This workflow combines such automation to remove mundane tasks while still retaining the involvement of surveyors at key decision making points.

“The combination of being able to collect data at normal traffic speeds and the automated extraction addresses traditional unsafe data collection methods, both for the surveyor and the travelling public, and time consuming data extraction,” continued Frecks. “Using this methodology we are able to deliver results in 1 day instead of one month completing survey projects in a tenth of the time.

StreetMapper has been specifically designed for the rapid 3D mapping of highways, runways, railways, infrastructure and buildings. Using vehicle-mounted lasers offering a 360-degree field of view, StreetMapper enables high precision mapping to a range of 300 metres, a capacity of 1,100,000 measurements per second per sensor and recorded accuracies in independent real world projects of better than 10 millimetres.

CONTACTS:

USA: Michael R Frecks, Email Contact, 402-618-3165, www.terrametrix3d.com

UK: Charlie Whyman, 3D Laser Mapping Ltd, Email Contact, +44(0)1949 838 004, www.3dlasermapping.com




Review Article Be the first to review this article
Rand3D

IMTS 2018 Register Now>>

Featured Video
Jobs
Mechanical Engineer for Allen & Shariff Corporation at Pittsburgh, Pennsylvania
Mid-Level Mechanical Engineer for Kiewit at lenexa, Kansas
Upcoming Events
Inside 3D Printing Seoul 2018 at Korea International Exhibition Center (KINTEX), Hall 5 408 Hallyuworld-ro, Ilsanseo-gu, Goyang-si, Gyeonggi-do Goyang Korea (South) - Jun 27 - 29, 2018
AMTEX 2018 at Pragati Maidan New Delhi India - Jul 6 - 9, 2018
34th Annual Coordinate Metrology Society Conference 2018 at Grand Sierra Resort, 2500 East Second Street Meeting & Covention Center Reno NV - Jul 23 - 27, 2018
Kenesto: 30 day trial



Internet Business Systems © 2018 Internet Business Systems, Inc.
25 North 14th Steet, Suite 710, San Jose, CA 95112
+1 (408) 882-6554 — Contact Us, or visit our other sites:
AECCafe - Architectural Design and Engineering EDACafe - Electronic Design Automation GISCafe - Geographical Information Services TechJobsCafe - Technical Jobs and Resumes ShareCG - Share Computer Graphic (CG) Animation, 3D Art and 3D Models
  Privacy PolicyAdvertise