Patents by Inventor Zoltán TÖRÖK

Zoltán TÖRÖK has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210055102
    Abstract: A method for image-based point measurement includes moving a surveying system along a path through a surrounding and capturing a series of images of the surrounding. A subset of images are defined as frames and a subset of frames are defined as key-frames. Textures are identified in first and second frames and are tracked in successive frames to generate first and second frame feature lists. A structure from motion algorithm is used to calculate camera poses for the images based on the first and second frame feature lists. Corresponding image points in images of the series of images are identified using feature recognition in at least a plurality of images. Three-dimensional coordinates of the selected image point are determined using forward intersection with the poses of the subset of images in which corresponding image points are identified. The three-dimensional coordinates of the selected image point are presented to the user.
    Type: Application
    Filed: August 22, 2019
    Publication date: February 25, 2021
    Applicant: LEICA GEOSYSTEMS AG
    Inventors: Bernhard RICHTER, Zoltán TÖRÖK, Elmar Vincent VAN DER ZWAN, Bernhard METZLER
  • Publication number: 20210056716
    Abstract: Three-dimensional (3D) point cloud generation using a stationary laser scanner and a mobile scanner. The method includes scanning a first part of a surrounding with the stationary laser scanner, obtaining a first 3D point cloud, scanning a second part of the surrounding with the mobile scanner, obtaining a second 3D point cloud, whereby there is an overlap region of the first part and the second part, and aligning the second 3D point cloud to the first 3D point cloud to form a combined 3D point cloud. The positional accuracy of points of the second 3D point cloud is increased by automatically referencing second scanner data of the overlap region, generated by the mobile scanner, to first scanner data of the overlap region, generated by the stationary laser scanner. Therewith, deformations of the second 3D point cloud and its alignment with the first 3D point cloud are corrected.
    Type: Application
    Filed: August 21, 2020
    Publication date: February 25, 2021
    Applicant: LEICA GEOSYSTEMS AG
    Inventors: Thomas MÖRWALD, Zoltán TÖRÖK, Bernhard METZLER
  • Publication number: 20210049784
    Abstract: A method for surveying an environment by a movable surveying instrument configured to be carried by a human with a progressional capturing of 2D-images by at least one camera and applying a visual simultaneous location and mapping algorithm (VSLAM) or a visual inertial simultaneous location and mapping algorithm (VISLAM) with a progressional deriving of a sparse evolving point cloud of at least part of the environment, and a progressional deriving of a trajectory of movement. The method comprises a progressional matching of the sparse evolving point cloud with a known CAD-geometry, with a minimizing of a function configured to model a distance between the sparse point cloud and the known CAD-geometry and deriving a spatial localization and orientation of the surveying instrument. At least one surveying measurement value of the environment by a spatial measurement unit is combined with the sparse point cloud or the plan information.
    Type: Application
    Filed: August 12, 2020
    Publication date: February 18, 2021
    Applicant: LEICA GEOSYSTEMS AG
    Inventors: Zoltán TÖRÖK, Thomas MÖRWALD
  • Publication number: 20200249017
    Abstract: Surveying apparatus comprising an event-based camera comprising a dynamic vision sensor.
    Type: Application
    Filed: February 4, 2020
    Publication date: August 6, 2020
    Applicant: LEICA GEOSYSTEMS AG
    Inventors: Zoltán TÖRÖK, Stefan Martin Benjamin GÄCHTER TOYA, Thomas MÖRWALD, Ulrich HORNUNG
  • Publication number: 20200056886
    Abstract: The invention generally relates to an industrial or geodetic surveying device having a tracking unit configured to receive over a tracking channel a tracking signal which is used to track a cooperative target. According to the invention, the surveying device comprises a camera to generate image data, wherein based on the additional knowledge about the position of the cooperative target in an image generated in the locked state, the visual appearance of the target carrier is learned and the result is stored in the form of a detector for use in a backup tracking mode.
    Type: Application
    Filed: August 19, 2019
    Publication date: February 20, 2020
    Applicant: LEICA GEOSYSTEMS AG
    Inventors: Urlich HORNUNG, Zoltán TÖRÖK, Veroljub MAKSIMOVIC, Bernhard METZLER
  • Patent number: 10508914
    Abstract: The invention relates to a surveying system for surveying and tracking a mobile target object which defines a target point, wherein the surveying system has a control and evaluation unit, a surveying device with a sighting device which defines a target axis, and a target object. The control and evaluation unit is designed to track the moving target object within the scope of a target-finding functionality, wherein a first change in alignment of the target axis about a first axis occurs as a function of detected target-finding radiation in such a way that the target axis tracks the movement tendency of the target object.
    Type: Grant
    Filed: January 28, 2017
    Date of Patent: December 17, 2019
    Assignee: LEICA GEOSYSTEMS AG
    Inventors: Zoltán Török, Ulrich Hornung
  • Publication number: 20170219345
    Abstract: The invention relates to a surveying system for surveying and tracking a mobile target object which defines a target point, wherein the surveying system has a control and evaluation unit, a surveying device with a sighting device which defines a target axis, and a target object. The control and evaluation unit is designed to track the moving target object within the scope of a target-finding functionality, wherein a first change in alignment of the target axis about a first axis occurs as a function of detected target-finding radiation in such a way that the target axis tracks the movement tendency of the target object.
    Type: Application
    Filed: February 6, 2017
    Publication date: August 3, 2017
    Applicant: LEICA GEOSYSTEMS AG
    Inventors: Zoltán TÖRÖK, Ulrich HORNUNG