Studies on Multimedia Information Systems in Broadband Networks

宽带网络多媒体信息系统研究

• 批准号: 07558040
• 负责人: NISHIO Shojiro
• 金额: $ 7.04万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07558040/
• 关键词: broadband network; multimedia; database; communication protocol; media synchronization; Abstract Syntax Notation One

In this study, we obtained the following research results regarding the design and implementation techniques of multimedia information systems in broadband networks :1.For developing a platform to store and manage multimedia information, we have designed and implemented an ASN.1 (Abstract Syntax Notation One) database system using a commercially available object-oriented database management system. Through the development of a typical ASN.1 database application and the evaluation of the application system, we have demonstrated that we can easily develop practical ASN.1 database applications on our platform system.2.As a new database technique in broadband networks, we have investigated transaction processing methods based on the database migration. Especially, we proposed a concurrency control method and several location management methods considering migration of database, and then evaluated them by simulation experiments. As a result, we showed that our proposed methods can achieve higher throughput than the conventional transaction processing methods.3.Regarding multimedia presentation systems using broadband networks, we considered a virtual space incorporating live video into a 3D computer graphics, and then discussed the QoS (Quality of Service) and the LoD (Level of Detail) which are the important aspects for implementing multimedia presentation systems.4.As for man-machine interface of multimedia information systems, we have considered virtual space teleconferencing systems. Especially, we investigated the reproduction of human body movements via broadband networks, and we proposed several methods realizing real-time 3D reproduction of human's movement, facial expressions, and hand gestures.Based on these research results, we have established the new fundamental techniques for constructing multimedia information system in broadband networks.

本研究在宽带网络多媒体信息系统的设计与实现技术方面取得了以下研究成果：1.为开发多媒体信息存储与管理平台，我们采用面向对象的数据库管理系统，设计并实现了一个ASN. 1（Abstract Notation One）数据库系统。通过一个典型的ASN.1数据库应用的开发和应用系统的评估，证明了在我们的平台系统上可以很容易地开发出实用的ASN.1数据库应用。2.作为宽带网络中一种新的数据库技术，我们研究了基于数据库迁移的事务处理方法。特别是，我们提出了一种考虑数据库迁移的并发控制方法和几种位置管理方法，并通过模拟实验对它们进行了评估。结果表明，我们提出的方法可以实现更高的吞吐量比传统的事务处理方法。3.关于使用宽带网络的多媒体演示系统，我们考虑了一个虚拟空间，将实时视频纳入三维计算机图形，然后讨论了QoS（服务质量）和LoD 4.在多媒体信息系统的人机接口方面，我们已经考虑了虚拟空间远程会议系统。特别是对宽带网络中人体运动的再现进行了研究，提出了几种实现人体运动、面部表情和手势的实时三维再现的方法，为在宽带网络中构建多媒体信息系统奠定了新的基础。

项目成果

Kaname Harumoto: "Design and Implementation of an Information Repository for ASN. 1-based Distributed Applications" Proc. Int. Tech. Conf. on Circuits/Systems, Computers and Communications (ITC-CSCC'96). Volume II. 681-684 (1996)

Kaname Harumoto：“基于 ASN.1 的分布式应用程序的信息存储库的设计和实现”Proc。

K.Harumoto, T.Yahata, and S.Nishio: "A Data Management Model for Computer Supported Cooperative Work (in Japanese)" IEICE Trans.D-I. Vol.J79-D-I,No.4. 271-279 (1996)

K.Harumoto、T.Yahata 和 S.Nishio：“计算机支持的协作工作的数据管理模型（日语）”IEICE Trans.D-I。

K.Harumoto, M.Tsukamoto, B.Liu, and S.Nishio: "Implementation and Evaluation of an ASN.1 Database on OODBMS (in Japanese)" IEICE Trans.D-I. Vol.J79-D-I,No.11. 975-983 (1996)

K.Harumoto、M.Tsukamoto、B.Liu 和 S.Nishio：“OODBMS 上 ASN.1 数据库的实现和评估（日语）” IEICE Trans.D-I。

春本要: "協調作業支援のためのデータ管理モデル" 電子情報通信学会論文誌D-I. Vol.J79-D-I(掲載予定). (1996)

Kaname Harumoto：“协作工作支持的数据管理模型”，电子、信息和通信工程师协会汇刊 D-I，第 J79-D-I 卷（待出版）。

西尾章治郎: "広帯域ネットワークにおけるマルチメディア情報ベース" 電子情報通信学会論文誌D-II. Vol. J79-D-II, No. 4. 460-467 (1996)

Shojiro Nishio：“宽带网络中的多媒体信息库”IEICE Transactions D-II，第 4 期。460-467 (1996)