Raw scan data: Am unprocessed data collected by a laser scanner. This might include different sources of error and perirpheral data catured during the scanning survey.
Registration: The process of determining and applying to two or more data sets the transformations that locate each dataset in a common coordinate system so that datasets are aligned relativeto each other (ASTM).
Scan: Refers to a single session of data collectionnat a single scan origin and scan orientation.
Segmentation: The process of sepasrating and isolating groups of points from the laser scan.
Survey control: The point(s) of reference where all measurments for engineering and constrcution will be tied to.
TIN (Triangulated Irregular Network): Representation of a surface that is arranged in a network of non-overlapping triangles.
Time-of flight: 3D laser scanners that calculate mesurements based on the two-way travel time it takes for the laser beam pulse to detect a surface and return to the detector.
Uncertainty: the uncertainty is the quantity of how much a measurement is unknown compared to the actual feature.