公开(公告)号：WO2022207687A2

公开(公告)日：2022-10-06

申请号：PCT/EP2022/058383

申请日：2022-03-30

Applicant: XYZ REALITY LIMITED

Inventor： AHMED, Umar ,  MITCHELL, David

IPC: G01C15/00 ,  G01C15/06 ,  G06F3/01 ,  G01C15/002 ,  G02B27/01 ,  G06F3/012 ,  G06F3/013 ,  G06T19/006 ,  G06T7/248 ,  G06T7/74

Abstract: Certain examples described herein present a method of configuring a headset for display of a building information model (BUM) at a construction site. In one example, the method includes: determining a pose of the headset using a positioning system; obtaining an image of a two-dimensional marker positioned within the construction site; determining a BIM-to-camera transformation between an origin of a coordinate system used by the building information model and an origin of the coordinate system of the camera based on a location of the two-dimensional marker within the image; determining a camera-to-positioning transformation between the origin of the coordinate system used by the camera and an origin of a coordinate system used by the positioning system; and determining a BIM-to-positioning transformation.

公开(公告)号：WO2022167505A1

公开(公告)日：2022-08-11

申请号：PCT/EP2022/052532

申请日：2022-02-03

Applicant: XYZ REALITY LIMITED

Inventor： AHMED, Umar ,  MITCHELL, David

IPC: G06T7/246 ,  G06T7/33 ,  G06T7/80

Abstract: Certain examples described herein provide a headset for use in construction at a construction site. The headset has an article of headwear, sensor devices for a plurality of positioning systems, a head-mounted display for displaying an augmented reality image of a building information model, and an electronic control system with at least one processor. The at least one processor is configured to obtain a set of transformations that map between the coordinate systems of the plurality of positioning systems. The at least one processor is configured to use the set of transformations and at least one calibrated transformation to convert between the coordinate system of a pose and an extrinsic coordinate system used by the building information model to render an augmented reality image of the building information model relative to the pose of the article of headwear on the head-mounted display.