Patent · US Active

Three-dimensional measurement device

US11300400B2 · kind B2 · utility

0Cited by

13References

20Claims

0Family size

Assignee

FARO Technologies, Inc. · US

Inventors

Daniel Döring · Ditzingen, DE
Rolf Heidemann · Zöblitz, DE
Martin Ossig · Tamm, DE
Gerrit Hillebrand · Waiblingen, DE

Key dates

Filing date	Jan 13, 2021
Grant date	Apr 12, 2022
Priority date	—
Expiry date	Jan 13, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH04N2013/0081
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A system and method of determining three-dimensional coordinates is provided. The method includes, with a projector, projecting onto an object a projection pattern that includes collection of object spots. With a first camera, a first image is captured that includes first-image spots. With a second camera, a second image is captured that includes second-image spots. Each first-image spot is divided into first-image spot rows. Each second-image spot is divided into second-image spot rows. Central values are determined for each first-image and second-image spot row. A correspondence is determined among first-image and second-image spot rows, the corresponding first-image and second-image spot rows being a spot-row image pair. Tach spot-row image pair having a corresponding object spot row on the object. Three-dimensional (3D) coordinates of each object spot row are determined on the central values of the corresponding spot-row image pairs. The 3D coordinates of the object spot rows are stored.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.