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Surveying system

  • US 10,281,276 B2
  • Filed: 09/28/2017
  • Issued: 05/07/2019
  • Est. Priority Date: 05/05/2014
  • Status: Active Grant
First Claim
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1. A surveying system adapted to determine a position of a position measuring resource being mounted on a surveying pole, the surveying system comprising:

  • a camera module being attached to the surveying pole and comprising at least one camera for capturing images;

    a control and evaluation unit having stored a program with program code so as to control and execute an orientation determining functionality including;

    capturing a series of images of the surrounding with the at least one camera when moving along a path through a surrounding, the series comprising an amount of images captured with different poses of the camera, the poses representing respective positions and orientations of the camera;

    performing a SLAM-evaluation with a defined algorithm using the series of images, wherein a plurality of respectively corresponding image points are identified in each of several sub-groups of images of the series of images and, based on resection and forward intersection using the plurality of respectively corresponding image points, a reference point field comprising a plurality of reference points of the surrounding, wherein coordinates of the reference points are derived, and the poses for the images are determined;

    retrieving determined positions from the surveying system that are adopted by the position measuring resource when moving along the path; and

    deriving an external orientation of the at least one camera in the coordinate system of the surveying system at least based on the determined pose for at least one designated image of the series of images and on the determined positions;

    a processing unit having stored a program with program code so as to control and execute a single point measurement functionality upon a trigger, the single point measurement functionality including;

    determining a trigger-related position, which has been adopted by the position measuring resource at a trigger-related point of time when moving along the path, with the use of the position measuring resource;

    determining a trigger-related external orientation, which has been adopted by the at least one camera at the trigger-related point of time; and

    determining a position of a bottom of the pole of the surveying system in coordinates of the coordinate system based on at least the trigger-related position and the trigger-related external orientation.

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