Shanghai Jiao Tong University

Zte Corporation

Yiling Xu

Jun Sun

Wenjun Zhang

Yunfeng Guan

Ning Liu

Hao Chen

Ping Wu

Zhao Wu

Yanfeng Wang

Bo Li

Wenjie Zhu

Qiuting Li

Linyao Gao

Ming Li

Wei Huang

Ying Hu

Guoqiang Shang

Dazhi He

Qi Yang

Teng Li

Xuguo Tang

Lianghui Zhang

Chengzhi Wang

Zhiqian Jiang

Puyue Hou

Shan Feng

Lizhi Hou

Ning Zhuang

Ning Zhunag

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.

Data processing method and apparatus, communication node and storage medium

Provided are a data transmission method, apparatus and device, and a storage medium. The data transmission method includes the following: receiving current status information sent by a client; determining status-dependent point cloud spatial region information corresponding to the current status information according to the current status information; selecting status-dependent point cloud spatial region data corresponding to the status-dependent point cloud spatial region information; and sending the status-dependent point cloud spatial region information and the status-dependent point cloud spatial region data to the client.

Data transmission method, apparatus, and device, and storage medium

Provided are a point cloud data encapsulation method and a point cloud data transmission method. The point cloud data encapsulation method includes: compressing a point cloud media file; and encapsulating the compressed point cloud media file and setting a classification record according to a data type, where the classification record is used for indicating a data type of each portion of point cloud data in the point cloud media file. The problem of low transmission efficiency of the media content and waste of storage space in the point cloud data transmission is solved, the flexibility of the media content combination is increased, management control of a multimedia service is increased, users are given more rights to independently select and acquire the media content, diversified application scenarios are provided, and better multimedia content provision and transmission solutions are provided for network operators.

Point cloud data encapsulation method and point cloud data transmission method

Provided is a media processing method. The method is used for uploading a function provided by a user or a third party and obtaining media processing parameters provided by the user. The method includes the following steps: receiving the description information of the media processing and determining whether a function that fulfills the requirement of the description information exists in a system; in a case where the function that fulfills the requirement of the description information exists, selecting the function that fulfills the requirement of the description information from the system; and in a case where the function that fulfills the requirement of the description information does not exist, selecting the function from the system according to the priority or selecting the function that fulfills the requirement of the description information from outside the system.

Media processing method

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.

Three-dimensional point cloud-based initial viewing angle control and presentation method and system

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.

Media content-based adaptive method, device and system for forward error correction (FEC) coding and decoding of systematic code, and medium

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.

Multimedia resource synchronous pushing method based on heterogeneous network

The present disclosure provides a method and a system for personalized presentation of a multimedia content assembly, including: presenting, on a server, by using a presentation mode in which one or more presentation layers superimpose, a media content component, and sending signaling information for describing a presentation layer layout to a client; presenting, on the client, a multimedia content assembly in a personalized manner according to the signaling information of the presentation layer. In the present disclosure, a content provider can instruct a user to perform combination presentation on multi-channel content at a client device vendor, and adjust a layout by a reduced update instruction. In addition, the present disclosure provides a media service applicable to a case in which terminal devices are different and user needs are different.

Method and system for personalized presentation of multimedia content assembly

Provided are a media information processing method, apparatus and system. The method comprises: generating media indication information according to a media state and/or a media state change, wherein the media indication information at least comprises one of the following: a media identifier, a media state type, a media state change type, a media state description, and a media state change description; and sending or storing the media indication information. By means of the present disclosure, the problem in the relevant art that the covered content in media information is incomplete during a media interaction is solved, thereby achieving the effect of improving the media information integrity and expandability.

Media information processing method, apparatus and system

The invention provides an FEC (Forward error correction) mechanism based on media content. The mechanism classifies the media content, and endows it with different importance, and then changes the coding scheme according to the packets belonging to frames of different importance in combination with channel conditions and user experience, to conduct protection according to the importance of corresponding frames. By using the technical scheme of the invention, for the data congestion caused by excessive coding in the current FEC system, the media content is able to be classified and endowed with different importance, and controlled by signaling and indicating bit; different FEC coding strengths is able to be adopted; the duplication-expanding window fountain code with the unequal error protection performance is able to be further adopted, to achieve the maximum guarantee of media content quality and reduce the large amount of data caused by FEC.

Fec mechanism based on media content

An implementation method and an application of a personalized presentation of associated multimedia content are provided. The method includes steps of: by a multimedia content provider, uniformly completing full file content when producing a multimedia file, and classifying segments of the content through a marking method according to an importance and/or an association degree of the content, so as to produce different versions of the multimedia file; and selectively previewing and/or playing by a user according to the different versions. The present invention is a flexible and efficient method for scalable organization, storage and transmission in an Internet on-demand system, thereby adding a flexible organization mechanism for the media content that an existing multimedia protocol lacks, and solving problems of an existing multimedia system, such as low transmission efficiency, waste of storage resources and poor user experience.

Implemental method and application of personalized presentation of associated multimedia content

A dynamic time window and cache method under the heterogeneous network transmission is provided, including adding Available_Time and Asset_Size attributes of the media content in the signaling or other places for the existing signaling at a MMT, so that the client terminal gets the time when the corresponding media content is available and the size of the media content; at the same time determining the network bandwidth and the network delay of the content from the broadband to the client under the current broadband network by the client; wherein the client terminal calculates the time interval for transmitting a request for caching in advance and the size of a cache window required by the terminal through the available time of the content of a broadband source and the delay of a broadband channel.

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Shanghai, China

Yiling Xu