Scanning for inspection, measurement or reverse engineering usually involves the use of laser scanning or structured light scanning. Both of these technologies produce reliable and repeatable measurements and model definition and are growing in popularity because of the speed of data acquisition over traditional probing techniques.
Laser scanners are usually mounted on to portable arm CMM systems, whilst structured light systems tend to be tripod mounted. There are some exceptions but these are the main ways in which the object to be measured or scanned is digitised.
Other systems which use video technology to take multiple images of parts or objects are also becoming popular, particularly in reverse engineering and entry-level scanning applications.