Selective sections from GSA BIM Guide Series 03 – BIM Guide For 3D Imaging Calibration Errors from an improperly calibrated instrument are systematic errors and result in an offset or bias in the measurements. This offset may be constant, linear,…
Tag: LIDAR
3D Imaging (laser scanning) vs. Traditional As-Built Documentation Methods
Selective sections from GSA BIM Guide Series 03 – BIM Guide For 3D Imaging The economic decision to use 3D imaging systems versus other methods depends on several factors…. Important factors affecting the decision include project requirements (e.g., measurement…
What is 3D Imaging (Laser Scanning)
Selective sections from GSA BIM Guide Series 03 – BIM Guide For 3D Imaging The benefits of determining the spatial environment and as-built conditions have played a key role in reducing costs and delivering a higher quality engineering effort. 3D…
Accuracy of Measurement
Selective sections from GSA BIM Guide Series 03 – BIM Guide For 3D Imaging 3.1.1. Sources of Error All measurements contain errors. Even measurements from a calibrated instrument are subject to random fluctuations or “noise”. Besides random errors, systematic errors…
3D Laser Scanning Basics
Three Dimensional laser scanning is very fast, accurate, and useful. It is not necessarily a new technology, but has only recently become a practical economic choice. There are two types of scanning we will focus on – site scanning and…
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