知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

7 records (took 0.012 seconds)

    Combined point cloud generation using a stationary laser scanner and a mobile scanner
    1.
    发明授权
    Combined point cloud generation using a stationary laser scanner and a mobile scanner 有权

    公开(公告)号：US11544860B2

    公开(公告)日：2023-01-03

    申请号：US17000145

    申请日：2020-08-21

    Applicant: LEICA GEOSYSTEMS AG

    Inventor： Thomas Mörwald ,  Zoltán Török ,  Bernhard Metzler

    IPC: G06T7/33 ,  G01S17/894 ,  G06T3/40 ,  G06T5/50 ,  G06T19/20

    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.

    Surveying system with image-based measuring
    2.
    发明授权
    Surveying system with image-based measuring 有权

    公开(公告)号：US11566896B2

    公开(公告)日：2023-01-31

    申请号：US16548688

    申请日：2019-08-22

    Applicant: LEICA GEOSYSTEMS AG

    Inventor： Bernhard Richter ,  Zoltán Török ,  Elmar Vincent Van Der Zwan ,  Bernhard Metzler

    IPC: G01C15/00 ,  G01C11/04 ,  G01C1/04 ,  G01C11/02 ,  G01S19/13

    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.

    Localization of a surveying instrument
    4.
    发明授权
    Localization of a surveying instrument 有权

    公开(公告)号：US11568559B2

    公开(公告)日：2023-01-31

    申请号：US16991890

    申请日：2020-08-12

    Applicant: LEICA GEOSYSTEMS AG

    Inventor： Zoltán Török ,  Thomas Mörwald

    IPC: G06T7/70 ,  G06T7/30 ,  G01C11/02 ,  G06T7/60

    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.

    Device for automatically finding a mobile geodetic target object
    5.
    发明授权
    Device for automatically finding a mobile geodetic target object 有权

    公开(公告)号：US10508914B2

    公开(公告)日：2019-12-17

    申请号：US15418715

    申请日：2017-01-28

    Applicant: LEICA GEOSYSTEMS AG

    Inventor： Zoltán Török ,  Ulrich Hornung

    IPC: G01C15/00 ,  G01S17/66

    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.

    Automatic, stationing of a geodetic survey instrument based on reference marker database
    6.
    发明授权
    Automatic, stationing of a geodetic survey instrument based on reference marker database 有权

    公开(公告)号：US12209862B2

    公开(公告)日：2025-01-28

    申请号：US18227847

    申请日：2023-07-28

    Applicant: LEICA GEOSYSTEMS AG

    Inventor： Norbert Kotzur ,  Zoltán Török

    IPC: G01C15/00 ,  G01C21/16 ,  G06T7/73

    Abstract: An automatic stationing functionality of a geodetic survey instrument. The survey instrument comprising a targeting unit configured to provide a targeting data measurement, an inertial measurement unit (IMU), an imaging sensor unit configured for providing the functionalities of a visual positioning system (VPS), a communication interface configured to receive a design data comprising position information of reference markers in the environment, and a computing unit. The automatic stationing functionality being configured for calculating a coarse pose of the instrument based on the IU and/or the VPS pose data, selecting a plurality of reference markers to be targeted based on the coarse pose and the design data, and determining a fine pose of the instrument based on the targeting data measurement of the plurality reference markers.

Patent Agency Ranking