A 3D laser scanner is a line-of sight-survey instrument. It fires out a series of laser pulses to establish the range of objects within its field of view.
Modern laser scanners can measure everything within a 360 degree view up to a range of 800m from where the instrument is placed. They generate a "point cloud" of X,Y,Z spatial coordinates which can then be used for measurements and generation of 3D CAD models.
(Right) a "point cloud" of 300 combined
laser scans of sections of the
Sydney harbour bridge,
One of TRL's 3D Laser Scanners
with an effective range of up to 150m.(Below)
Modern laser scanners can measure everything within a 360 degree view up to a range of 800m from where the instrument is placed. They generate a "point cloud" of X,Y,Z spatial coordinates which can then be used for measurements and generation of 3D CAD models.
(Right) a "point cloud" of 300 combined
laser scans of sections of the
Sydney harbour bridge,
One of TRL's 3D Laser Scanners
with an effective range of up to 150m.(Below)
3D laser scans of the London Underground,
and the resultant rendered realtime 3D walkthrough.
and the resultant rendered realtime 3D walkthrough.
3D Graphics
3D Graphics
(Right) - a 3D CAD model (Rhino 3D/ 3D Studio Max) model generated from the point cloud data.
A series of 13 laser scans were used to generate this realtime 3D model of a crime scene for a coroners court in London.
copyright mike annear 2007
