US 11,988,889 B2
Laser projector system
Maxime Thierry Isabelle, Montreal (CA); Joshua Bigham, Pinehurst, NC (US); Matthew T. Armstrong, Glenmoore, PA (US); Salvatore DiAngelus, Glen Mills, PA (US); and Joel H. Stave, New Boston, NH (US)
Assigned to FARO Technologies, Inc., Lake Mary, FL (US)
Filed by FARO Technologies, Inc., Lake Mary, FL (US)
Filed on Oct. 12, 2020, as Appl. No. 17/068,217.
Claims priority of provisional application 62/935,719, filed on Nov. 15, 2019.
Prior Publication US 2021/0149144 A1, May 20, 2021
Int. Cl. G02B 26/08 (2006.01); G01B 7/30 (2006.01); G01S 7/481 (2006.01); G01S 17/89 (2020.01); G02B 7/00 (2021.01); G02B 26/10 (2006.01); G06T 7/73 (2017.01)
CPC G02B 7/005 (2013.01) [G01B 7/30 (2013.01); G01S 7/4814 (2013.01); G01S 7/4817 (2013.01); G01S 17/89 (2013.01); G02B 26/105 (2013.01); G06T 7/75 (2017.01); G06T 2207/10028 (2013.01); G06T 2207/20212 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of aligning a light projector and an electronic model in an environment, the method comprising:
placing the light projector in the environment;
scanning the environment with a laser scanner to obtain a plurality of three-dimensional coordinates in the environment, a portion of the plurality of three-dimensional coordinates being on a surface;
extracting the surface from the plurality of three-dimensional coordinates;
generating at least two topographical curves based on a flatness of the surface;
projecting a light pattern on the surface with the light projector based at least in part on the at least two topographical curves;
selecting between acquiring an intensity image and a two-dimensional (2D) photographic image corresponding to the environment having the surface;
acquiring a selected one of the intensity image and the 2D photographic image of the environment;
identifying a plurality of features based on the selected one of the intensity image and the 2D photographic image;
associating the plurality features in the environment with a plurality of points in the electronic model; and
aligning the light projector to the electronic model based at least in part on the plurality of features and the plurality of points.