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As-Built Models.

Commercial scanners are used to create as-built models from range data. One example is an Atlas launch tower was scanned from several locations, all images were inter-registered, and a model was produced for renovation [8]. The areas scanned were difficult to reach, apparently, as the scanning hardware was held hundreds of feet off the ground by a crane. Another example of acquiring as-built models is that of sets for Hollywood movies [7]. The Cyrax scanner was used to scan a cave set from the movie ``Starship Troopers.'' 3D CAD models were produced, which allowed computer graphics artists to superimpose animations in the proper locations.

Lars S. Nyland