System and method to reduce an amount of sunlight and an amount of specular reflection in drone sensing

    公开(公告)号:US12238412B2

    公开(公告)日:2025-02-25

    申请号:US17871262

    申请日:2022-07-22

    Inventor: Cheng-Yi Liu

    Abstract: An apparatus includes one or more processors and logic encoded in one or more non-transitory media for execution by the one or more processors and when executed operable to receive sensor data from a drone that travels around a target object. The logic is further operable to generate, based on the sensor data, a first three-dimensional (3D) reconstruction of the target object. The logic is further operable to estimate a direction of sunlight and a direction of spectral reflection. The logic is further operable to plan a trajectory of sensor capturing positions for the drone to capture images of the target object that reduce an amount of sunlight and an amount of specular reflection.

    Adaptive mode selection for point cloud compression

    公开(公告)号:US12238272B2

    公开(公告)日:2025-02-25

    申请号:US17739484

    申请日:2022-05-09

    Abstract: An electronic device and method for adaptive mode selection for point cloud compression, is provided. The electronic device receives a 3D point cloud geometry and partitions the 3D point cloud geometry into a set of 3D blocks. For a 3D block of the set of 3D blocks, mode decision information is determined. The mode decision information includes class information of the 3D point cloud geometry, operational conditions associated with an encoding stage of the 3D point cloud geometry, or mode-related information associated with one or more 3D blocks of the set of 3D blocks. Based on the mode decision information, one or more modes are selected for the 3D block from a plurality of modes. Each mode corresponds to a function that is used to encode the 3D block. The 3D block is encoded based on the one or more modes.

    Method for predefining in an XR space an entryway corresponding to a real entryway

    公开(公告)号:US12134031B2

    公开(公告)日:2024-11-05

    申请号:US17488245

    申请日:2021-09-28

    Abstract: A method for predefining an entryway, corresponding to a real entryway, for an object entering or leaving an extended reality (XR) space contained within a real environment includes: accessing a spatial mapping mesh (SMM) for the real environment, and a sealed space mesh (SSM) for the XR space; analyzing polygons in the SMM and SSM to identify first subsets representing real boundary walls and virtual wall boundaries respectively; filtering the first subsets according to first criteria to yield second subsets; colliding polygons across the second subsets to yield a third subset of SSM polygons; defining groups of connected SSM polygons within the third subset based on proximity; and selecting one group as defining the entryway. The entryway is predefined in advance of user interaction with any virtual elements in the XR space.

    DETECTION AND INDICATION OF GEOMETRY RECONSTRUCTION ARTIFACTS IN POINT CLOUDS BASED ON LOCAL DENSITY

    公开(公告)号:US20240221228A1

    公开(公告)日:2024-07-04

    申请号:US18147944

    申请日:2022-12-29

    CPC classification number: G06T9/001 G06T7/62

    Abstract: An electronic device and method for detection and indication of geometry reconstruction artifacts is provided. The electronic device acquires a reference point cloud, encodes the reference point cloud to generate encoded point cloud data, and decodes the encoded point cloud data to generate a test point cloud. The electronic device further generates a first local density map and a second local density map for points of the reference point cloud and the test point cloud, respectively. The electronic device generates a final density map based on the first local density map and the second local density map, and further generates supplementary information based on the final density map. The supplementary information includes missing points data corresponding to regions of the test point cloud that include artifacts such as holes or includes descriptors for the regions that include the artifacts. The electronic device signals the supplementary information to a decoder.

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