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Surveying system

  • US 10,655,962 B2
  • Filed: 12/08/2016
  • Issued: 05/19/2020
  • Est. Priority Date: 05/05/2014
  • Status: Active Grant
First Claim
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1. A surveying subsystem adapted to be used as part of a surveying system that is adapted to determine positions of a position measuring resource that is mounted on a surveying pole and includes a GNSS-antenna or a retro-reflector, wherein said surveying pole is hand-carried, the surveying subsystem comprising:

  • a camera module configured to be attached to the surveying pole and having a camera and an optical element, the optical element being configured such that the camera has an angle of view of 360°

    in an azimuthal direction; and

    a control and evaluation unit having stored thereon a program with program code that, when executed, controls and executes a spatial representation generation functionality in which, when moving along a path through a surrounding;

    a first series of panoramic images of the surrounding is captured with the camera, the first series comprising an amount of panoramic images captured with different poses of the camera, the poses representing respective positions and orientations of the camera,a SLAM-evaluation with a defined algorithm using the series of panoramic images is performed, wherein a plurality of respectively corresponding image points are identified in each of several sub-groups of panoramic images of the series of panoramic images and, based on resection and forward intersection using the plurality of respectively corresponding image points,a reference point field is built up comprising a plurality of reference points of the surrounding, wherein coordinates of the reference points are derived, andthe poses for the panoramic images are determined,wherein a position and orientation of at least one of the surveying subsystem or the camera in six degrees of freedom are derived based on one or more of the determined poses and based on a multitude of determined positions of the position measuring resource.

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