Abstract: A scanning arrangement comprising means (40) for projecting a two-dimensional optical pattern on a surface (35) of a scanned object and a two-dimensional photodetector (34') is mounted within a hand-held scanning device and outputs scan files of 3D coordinate data of overlapping surface portions of the object. The surface portions defined by these scan files are registered by appropriate rotations and translations in a computer, which are determined either from the outputs of a gyroscope (51) and an accelerometer (50) or by mathematical processing of the surface portions e.g. involving detection and location of common features.
Type:
Grant
Filed:
May 10, 1999
Date of Patent:
October 3, 2000
Assignee:
Tricorder Technology plc
Inventors:
Guy Richard John Fowler, Christopher Peter Flockhart
Abstract: A scanning arrangement has a device (40) for projecting a two-dimensional optical pattern on a surface (35) of a scanned object. A two-dimensional photodetector (34') is mounted within a hand-held scanning device and outputs scan files of 3D coordinate data of overlapping surface portions of the object. The surface portions defined by these scan files are registered by appropriate rotations and translations in a computer, which are determined either from the outputs of a gyroscope (51) and an accelerometer (50) or by mathematical processing of the surface portions, e.g., involving detecting and location of common features.
Type:
Grant
Filed:
July 9, 1998
Date of Patent:
June 15, 1999
Assignee:
Tricorder Technology PLC
Inventors:
Guy Richard John Fowler, Christopher Peter Flockhart
Abstract: A scanning arrangement has a device (40) for projecting a two-dimensional optical pattern on a surface (35) of a scanned object. A two-dimensional photodetector (34') is mounted within a hand-held scanning device and outputs scan files of 3D coordinate data of overlapping surface portions of the object. The surface portions defined by these scan files are registered by appropriate rotations and translations in a computer, which are determined either from the outputs of a gyroscope (51) and an accelerometer (50) or by mathematical processing of the surface portions, e.g., involving detecting and location of common features.
Type:
Grant
Filed:
February 24, 1997
Date of Patent:
December 15, 1998
Assignee:
Tricorder Technology PLC
Inventors:
Guy Richard John Fowler, Christopher Peter Flockhart