公开(公告)号：US20240241055A1

公开(公告)日：2024-07-18

申请号：US18509263

申请日：2023-11-14

申请人： Tencent America LLC

发明人： Xinyuan LI ,  Yu JI ,  Yanchen LIU ,  Xiaochen HU ,  Changxi ZHENG

IPC分类号： G01N21/64

CPC分类号： G01N21/6456 ,  G01N21/6428 ,  G01N2021/6441 ,  G01N2021/6495 ,  G01N2021/6497

摘要： A three-dimensional (3D) object scanning method includes: controlling, when an invisible light source is off, a first camera device to capture a first image of the target object; and controlling, when the invisible light source is on, a second camera device to capture second images of the target object from a plurality of viewing angles. The target object is painted with invisible markers that are invisible to the first camera device when the invisible light source is off. The invisible markers are visible to the second camera device upon absorbing a light emitted by the invisible light source. The second images are used to determine 3D information of the target object.

公开(公告)号：US20240291563A1

公开(公告)日：2024-08-29

申请号：US18113520

申请日：2023-02-23

申请人： TENCENT AMERICA LLC

发明人： Yanchen LIU ,  Yu JI ,  Changxi ZHENG ,  Xia ZHOU

IPC分类号： H04B10/114

CPC分类号： H04B10/114

摘要： This application is directed to device synchronization and alignment in extended reality. Two electronic devices create two maps of a scene according to two distinct coordinate systems. A first electronic device determines a device pose of a second electronic device in a first coordinate system of the first electronic device. The device pose is used to determine a transformation relationship between the two coordinate systems. The first electronic device obtains a second object pose that is measured in a second coordinate system of the second electronic device and used to render an object in a second map of the second electronic device. The second object pose is converted to a first object pose in the first coordinate system based on the transformation relationship. The object is rendered concurrently in the first and second maps of the first and second electronic devices based on the first and second object poses, respectively.