Simple environment solver using planar extraction

    公开(公告)号:US12100098B2

    公开(公告)日:2024-09-24

    申请号:US17970490

    申请日:2022-10-20

    申请人: Magic Leap, Inc.

    摘要: A method to reconstruct an environment is provided. The method makes available to a wide variety of XR applications fresh and accurate 3D reconstruction data of environments with low processing time and low usage of computational resources and storage spaces. The 3D reconstruction data are structured in a way to be efficiently shared between users for multi-user experiences. The method includes obtaining plane segments of an environment, identifying surface planes of the environment by, for example, filtering and grouping the plane segments or ad hoc selection of the plane segments by a user, and inferring corner points of the environment based on the surface planes. The corner points are used to build a 3D representation of the environment when an XR application requires.

    MULTI-MODE STEREO MATCHING FOR DETERMINING DEPTH INFORMATION

    公开(公告)号:US20240312038A1

    公开(公告)日:2024-09-19

    申请号:US18183061

    申请日:2023-03-13

    摘要: Systems and techniques are described for determining disparity information. For instance, a method for determining disparity information is provided. The method including: obtaining a plurality of cost functions; determining a first disparity for a center pixel of a first region of pixels at least in part by comparing one or more minima of a cost function of the center pixel to one or more minima of cost functions of other pixels in the first region; determining a second disparity for the center pixel at least in part by comparing one or more minima of a cost function of a center pixel of a second region to one or more minima of cost functions of other pixels in the second region, including the center pixel of the first region; and determining a third disparity for the center pixel of the first region based on the first disparity and the second disparity.

    Pavement macrotexture determination using multi-view smartphone images

    公开(公告)号:US12067737B2

    公开(公告)日:2024-08-20

    申请号:US18143524

    申请日:2023-05-04

    发明人: Jie Shan Xiangxi Tian

    IPC分类号: G06T7/41 G06T7/593 G06V30/18

    摘要: A method of determining macrotexture of an object is disclosed which includes obtaining a plurality of stereo images from an object by an imaging device, generating a coordinate system for each image of the plurality of stereo images, detecting one or more keypoints each having a coordinate in each image of the plurality of stereo images, wherein the coordinate system is based on a plurality of ground control points (GCPs) with apriori position knowledge of each of the plurality of GCPs, generating a sparse point cloud based on the one or more keypoints, reconstructing a 3D dense point cloud of the object based on the generated sparse point cloud and based on neighboring pixels of each of the one or more keypoints and calculating the coordinates of each pixel of the 3D dense point cloud, and obtaining the macrotexture based on the reconstructed 3D dense point cloud of the object.