Multiple laser scanner
First Claim
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1. A method comprising:
 projecting at least three light pattern elements toward a target at a diverse angular spacing relative to each other about a first axis;
capturing at least one image of the target while illuminated by at least one of the pattern elements;
moving the pattern elements relative to the target consistent with rotation of the projection about a second axis;
disambiguating one pattern element from any other contained within an image of the target, at least in part based on the diverse angular spacing; and
measuring by triangulation a location of points on a threedimensional surface of the target.
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Abstract
A method and system to capture geometry of a three dimensional target while disambiguating multiple projected target elements. The system projects at least three light pattern elements toward a target at a diverse spacing relative to each other. The system captures at least one image of the target while illuminated by at least one of the pattern elements. The pattern elements are moved relative to the target. The system disambiguates one pattern element from any other contained within an image of the target, at least in part based on the diverse spacing. The system measures triangulation locations of points on a threedimensional surface of the target.
188 Citations
19 Claims

1. A method comprising:

projecting at least three light pattern elements toward a target at a diverse angular spacing relative to each other about a first axis; capturing at least one image of the target while illuminated by at least one of the pattern elements; moving the pattern elements relative to the target consistent with rotation of the projection about a second axis; disambiguating one pattern element from any other contained within an image of the target, at least in part based on the diverse angular spacing; and measuring by triangulation a location of points on a threedimensional surface of the target.  View Dependent Claims (2, 3, 4, 5, 6, 7, 8)


9. A method comprising:

projecting at least three light pattern elements towards a target, the light elements having diverse linear spacing within a projection phase; capturing at least one image of the target while illuminated by at least one pattern element; linearly translating the pattern elements relative to the target; disambiguating one pattern element from any other contained within an image of the target at least in part based on the diverse linear spacing of the pattern elements; and measuring by triangulation a location of points on a threedimensional surface of the target.  View Dependent Claims (10, 11, 12, 13)


14. A system comprising:

a projection unit to project at least three diversely spaced light pattern elements toward a target; an image sensing array to capture light from the projection unit reflected by the target; a processor to disambiguate the light pattern elements based on a timing between illuminations of a pixel in the image sensing array.  View Dependent Claims (15, 16, 17, 18, 19)

1 Specification