Trimble Inc.

Matthew Fonken

Scott Graybill

Ashish Dhital

Kent W Kahle

Young Jin Lee

Jordan Lawver

Vinod Khare

An augmented-reality device is aligned with an environment using a correction source. A position of a reflector (or other device that is part of a surveying system) coupled with a surveying rod is measured in relation to a correction. A position of a visual design, which is coupled with the surveying rod, is measured in relation to an augmented-reality device, based on an image of the visual design acquired by the augmented-reality device. A coordinate system of the augmented-reality device is aligned with the environment based on the position of the reflector in relation to the correction source, the position of the visual design in relation to the augmented-reality device, and an offset between the reflector and visual design.

Correcting position of a mobile device using a mobile reference

Two-dimensional targets, such as AprilTags, are used as control points. AprilTags can be used as cost effective alternatives to traditional prism targets without losing accuracy. AprilTags can be placed precisely around a construction site as 'permanent' survey control points, like positioning reflector targets. A robotic total station, equipped with a camera sensor, can image the two-dimensional targets to efficiently resection itself.

Total station re-sectioning using two-dimensional targets

Growing community of inventors

Federal Heights, CO, United States of America

Matthew Fonken