CONFIGURATION METHOD FOR THE DISPLAY OF A BUILDING INFORMATION MODEL

    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

    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.

    MAPPING PIPELINE OPTIMIZATION USING AGGREGATED OVERHEAD VIEW RECONSTRUCTION

    公开(公告)号:WO2021202785A1

    公开(公告)日:2021-10-07

    申请号:PCT/US2021/025237

    申请日:2021-03-31

    Abstract: Examples disclosed herein may involve (i) obtaining an aggregated overhead view image of a geographical area that has been generated by a pipeline for generating aggregated overhead view images, the geographical area comprising a plurality of regions, where the aggregated overhead view image is generated from aggregating pixel values from a plurality of source images of the geographical area, (ii) generating one or more reprojection images of one or more of the regions of the geographic area from the aggregated overhead view image, (iii) identifying, from the plurality of source images, one or more source images that capture the one or more regions of the geographical area, (iv) calculating one or more differences between the identified one or more source images and the one or more reprojection images, and (v) determining one or more error corrections to be applied to the pipeline for generating overhead view images

    ENHANCED STAR TRACKING
    5.
    发明申请

    公开(公告)号:WO2021145909A1

    公开(公告)日:2021-07-22

    申请号:PCT/US2020/026954

    申请日:2020-04-06

    Abstract: A system and method for star tracking includes: capturing an image of stars; detecting and selecting visible stars from the captured image; extracting features from the selected stars by forming a convex hull from the selected stars to generate a spherical polygon; computing the area and higher order moments of the spherical polygon; and pattern matching the extracted feature against a database of star catalog. The pattern matching includes matching the area of the spherical polygon to a plurality of polygon areas stored in the database and when the number of the matching candidates is more than one, matching a next extracted higher order moment with a respective higher order moment in the database, and repeating said matching of the next extracted higher order moment until the number of the matching candidates is equal to one.

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