公开(公告)号：US20240054723A1

公开(公告)日：2024-02-15

申请号：US18255992

申请日：2021-11-02

申请人： ZTE CORPORATION ,  Shanghai Jiao Tong University

发明人： Yiling XU ,  Lizhi HOU ,  Yunfeng GUAN ,  Jun SUN ,  Zhao WU ,  Qiuting LI ,  Ping WU

IPC分类号： G06T17/00

CPC分类号： G06T17/00

摘要： Provided are a data processing method and apparatus, a communication node, and a storage medium. The data processing method includes determining multi-frame combined point cloud information; writing the multi-frame combined point cloud information into media streams of combined point cloud data; and sending, according to the multi-frame combined point cloud information, the media streams of the combined point cloud data to a receiving end separately.

公开(公告)号：US20210099742A1

公开(公告)日：2021-04-01

申请号：US16319531

申请日：2017-08-29

申请人： SHANGHAI JIAO TONG UNIVERSITY

发明人： Yiling XU ,  Wenjun ZHANG ,  Shan FENG ,  Hao CHEN ,  Yanfeng WANG ,  Jun SUN ,  Yunfeng GUAN

IPC分类号： H04N21/242 ,  H04N21/647 ,  H04L12/26

摘要： The present disclosure discloses a method for synchronously pushing a multimedia resource based on a heterogeneous network. The method includes: step 1: obtaining, by a server, end-to-end broadband network delay information or broadband network delay and available bandwidth information of different users; step 2: after receiving a client request, calculating, by the server according to the end-to-end broadband network delay information or the broadband network delay and available bandwidth information of the different users, a moment at which the multimedia resource can be synchronously presented; and step 3: sending, by the server, the multimedia resource after the moment at which the multimedia resource can be synchronously presented, and synchronously playing, by a client, content according to a start presentation time of the multimedia resource, so that broadband content of the different users can be synchronously presented.

公开(公告)号：US20200153545A1

公开(公告)日：2020-05-14

申请号：US16740229

申请日：2020-01-10

申请人： SHANGHAI JIAO TONG UNIVERSITY

发明人： YiIing XU ,  Wenjun ZHANG ,  Ning LIU ,  Yunfeng GUAN ,  Yanfeng WANG ,  Jun SUN ,  Zhiqian JIANG ,  Hao CHEN

IPC分类号： H04L1/00 ,  H04L29/06

摘要： A media content-based adaptive method, device and system for Forward Error Correction (FEC) coding and decoding of a systematic code, and a medium are provided. The method includes: dividing, according to the importance of media content, source data into N types of source data packets according to priorities; generating N types of intermediate codes according to the N types of source data packets and the priorities thereof; setting, according to the N types of intermediate codes, recovery data of N types of source data according to a channel condition, and generating coded symbols of N types of systematic codes; receiving the coded symbols, and arranging and sorting the coded symbols according to decoding requirements; and decoding, according to the number of received coded symbols, intermediate codewords according to different situations, and recovering the corresponding source data packets according to the intermediate codewords.

公开(公告)号：US20220148280A1

公开(公告)日：2022-05-12

申请号：US17595808

申请日：2020-06-28

申请人： Shanghai Jiao Tong University

发明人： Yiling XU ,  Linyao GAO ,  Wenjie ZHU ,  Yunfeng GUAN

IPC分类号： G06T19/20 ,  G06F3/01

摘要： Provided are an initial view angle control and presentation method and system based on a three-dimensional point cloud and a point cloud system. A three-dimensional media stream is read and parsed. An initial viewpoint, a normal vector and a forward direction vector in the three-dimensional media stream are parsed. A user can view an initial angle, that is, a region of interest, designated by a content producer when initially consuming three-dimensional media content. Moreover, scaling, that is, scale transformation, of the three-dimensional media content is allowed in an optimized manner. In a real-time interactive scene, the view range of the user can be adjusted based on the position of the user relative to the initial viewpoint. The freedom degree of visual media consumption is fully improved according to the interactive behavior of the user, providing an immersive user experience.