基于H.323的网络视频会议监视系统的研究与实现
|
摘要
随着互联网高速发展,网络视频迅速兴起,已成为现代社会的一个重要应用,但对网络视频相关方面的监管没有跟上发展的步伐,必须对网络视频应用进一步规范。
目前市场上开发的H.323产品主要为适用于通信双方或多方的视频会议终端产品,缺乏能够自动识别、分析、处理H.323协议,监控视频会议传输信息的产品。本文正是针对这一现状展开研究,以满足相关部门加强对网络视频监管的需要。
本文主要针对四个方面进行了研究:
第一,理论研究。首先,研究了视频会议系统的类型、结构组成及实现标准;其次,研究了H.323的体系结构,重点分析研究了包括呼叫接续、通道管理、媒体压缩传输等在内的通信规程;最后,研究了H.323视频会议系统的关键技术,对多种视音频编码标准以及音视频同步技术进行了深入研究;提出了H.323信令自动解析模式以及音视频同步算法。
第二,基于H.323的视频会议监视系统方案设计。在分析研究H.323视频会议系统的基础上,对基于H.323的视频会议监视系统的总体架构、主要功能以及各子模块功能进行了详细设计。
第三,方案实现。依据方案设计,利用H.323协议关键参数信息设计了H.323信令自动解析模式,采用先进的Winamp插件技术实现了音视频解码,利用时间标记设计了音视频同步算法,从而构建了基于H.323的视频会议监视系统,实现了自动监测协议信令、自动提取音视频数据、自动判别音视频数据类型及解码同步播放等功能。
第四,系统测试验证。主要进行了单元测试、集成测试、系统测试,将系统功能与设计方案中的各项功能指标进行测试对比,验证了系统功能基本达到设计要求。
通过本文的研究,基本可以满足对当前H.323网络视频会议的监视需要,具有广阔的应用前景,能够为将来的多媒体业务的监控研究提供一定的参考。
With fast development of Internet, the video communications over networks rises rapidly. Though the video communications over networks become an important application in modern society, the management of it develops slowly. The criterion of the video communications over networks has to be strengthened.
Most of the productions based on H.323 protocol in current market are terminals for two or more users in video conference, while the productions which can automatically recognize, analyze, deal with H.323 protocol and surveil information transmitted in the video conference lack. The thesis studies the problems mentioned above to meet the need of the network video surveillance and management.
The main contribution of the thesis is as four aspects:
Firstly, theory research. The types, frameworks and realization standards of video conference are studied first. Then the thesis studies the framework of H.323-based system and analyzes the protocol stack, mainly on the communication rules including calling process, logical channel management and media compress transmission. Finally the thesis studies the key technologies of the video conference system based on H.323 protocol, deeply studies several audio video coding standards and multimedia synchronization technologies. An automatically parsing mode for H.323 signaling and a video audio synchronization arithmetic are proposed.
Secondly, design the surveillance system for video conference based on H.323. After analyzing H.323 video conference system, the thesis designs the architecture、main functions and the functions of each module for H.323 video conference system in detail.
Thirdly, project realization. According to the design, the thesis uses key parameter to design the automatically parsing mode for H.323 signaling, uses advanced Winamp inset technology to design the mode for audio and video decoding, uses time sign to design the synchronization of audio and video arithmetic. The thesis designs and constructs the video conference surveillance system based on H.323 accordingly, and realizes automatic surveillance of the protocol signaling, getting video audio data automatically, distinguishing data types automatically and playing synchronously.
Fourthly, test and verification. The thesis makes unit tests, integration tests and system tests, compares system function with the designed indexes, and verifies that the system function meets the need of design.
By the study of the thesis, the need for H.323 network video conference surveillance is satisfied. The production has wide application future, which can provide reference for the surveillanee offuturemultimediaserv1eesinaeertainextent.
目前市场上开发的H.323产品主要为适用于通信双方或多方的视频会议终端产品,缺乏能够自动识别、分析、处理H.323协议,监控视频会议传输信息的产品。本文正是针对这一现状展开研究,以满足相关部门加强对网络视频监管的需要。
本文主要针对四个方面进行了研究:
第一,理论研究。首先,研究了视频会议系统的类型、结构组成及实现标准;其次,研究了H.323的体系结构,重点分析研究了包括呼叫接续、通道管理、媒体压缩传输等在内的通信规程;最后,研究了H.323视频会议系统的关键技术,对多种视音频编码标准以及音视频同步技术进行了深入研究;提出了H.323信令自动解析模式以及音视频同步算法。
第二,基于H.323的视频会议监视系统方案设计。在分析研究H.323视频会议系统的基础上,对基于H.323的视频会议监视系统的总体架构、主要功能以及各子模块功能进行了详细设计。
第三,方案实现。依据方案设计,利用H.323协议关键参数信息设计了H.323信令自动解析模式,采用先进的Winamp插件技术实现了音视频解码,利用时间标记设计了音视频同步算法,从而构建了基于H.323的视频会议监视系统,实现了自动监测协议信令、自动提取音视频数据、自动判别音视频数据类型及解码同步播放等功能。
第四,系统测试验证。主要进行了单元测试、集成测试、系统测试,将系统功能与设计方案中的各项功能指标进行测试对比,验证了系统功能基本达到设计要求。
通过本文的研究,基本可以满足对当前H.323网络视频会议的监视需要,具有广阔的应用前景,能够为将来的多媒体业务的监控研究提供一定的参考。
With fast development of Internet, the video communications over networks rises rapidly. Though the video communications over networks become an important application in modern society, the management of it develops slowly. The criterion of the video communications over networks has to be strengthened.
Most of the productions based on H.323 protocol in current market are terminals for two or more users in video conference, while the productions which can automatically recognize, analyze, deal with H.323 protocol and surveil information transmitted in the video conference lack. The thesis studies the problems mentioned above to meet the need of the network video surveillance and management.
The main contribution of the thesis is as four aspects:
Firstly, theory research. The types, frameworks and realization standards of video conference are studied first. Then the thesis studies the framework of H.323-based system and analyzes the protocol stack, mainly on the communication rules including calling process, logical channel management and media compress transmission. Finally the thesis studies the key technologies of the video conference system based on H.323 protocol, deeply studies several audio video coding standards and multimedia synchronization technologies. An automatically parsing mode for H.323 signaling and a video audio synchronization arithmetic are proposed.
Secondly, design the surveillance system for video conference based on H.323. After analyzing H.323 video conference system, the thesis designs the architecture、main functions and the functions of each module for H.323 video conference system in detail.
Thirdly, project realization. According to the design, the thesis uses key parameter to design the automatically parsing mode for H.323 signaling, uses advanced Winamp inset technology to design the mode for audio and video decoding, uses time sign to design the synchronization of audio and video arithmetic. The thesis designs and constructs the video conference surveillance system based on H.323 accordingly, and realizes automatic surveillance of the protocol signaling, getting video audio data automatically, distinguishing data types automatically and playing synchronously.
Fourthly, test and verification. The thesis makes unit tests, integration tests and system tests, compares system function with the designed indexes, and verifies that the system function meets the need of design.
By the study of the thesis, the need for H.323 network video conference surveillance is satisfied. The production has wide application future, which can provide reference for the surveillanee offuturemultimediaserv1eesinaeertainextent.
引文
[1]马华东.多媒体技术原理及应用[M].北京:清华大学出版社,2008:251.
[2]黄永峰. IP网络多媒体通信技术[M].北京:人民邮电出版社,2003:1.
[3]钟晓流,吴庚生.多媒体视听技术与应用环境[M].北京:清华大学出版社,2007:351.
[4] C Schlatter. Basic Architecture of H.323 [M]. Sweden: Swiss Education & Research Network , June 2003.
[5]何爱香.基于H.323协议的视频会议及其技术研究.北京工业大学. 2005:5-7.
[6]杨高波,韩龙.视频会议系统综述[J].视频技术应用与工程,2004.
[7] ITU-T Recommendation H.323. Packeted-based Multimedia Communications Systems[S]. 1997.
[8]王寂兰,赵东风.H.323视频会议体系结构的应用研究[J].云南民族学院学报,自然科学版,2003.
[9] ITU-T Recommendation H.225.0. Media Stream Packetization and Synchronization for Visual Telephone Systems on Non-Guaranteed Quality of Service LANS[S]. 1996.
[10] ITU-T Recommendation Q.931. ISDN user-network interface layer 3 specification for basic call control[S].
[11] RFC 1889 RTP: A Transport Protocol for Real-Time Applications[EB]. 1996.
[12]张占军等.多媒体实时传输协议RTP.计算机工程与应用[J].2001:124-126.
[13]沙丽娜,王宁章,覃团发.视频压缩编码国际标准综述[J].电子科技,2005:56-64.
[14] ITU-T Recommendation H.245. Control Protocol for Multimedia Communication[S]. 1996.
[15]马小虎、张明敏、严华明.多媒体数据压缩标准及实现[M].北京:清华大学出版社, 1996.
[16]丁贵广、计文平、郭宝龙等著. Visual C++ 6.0数字图像编码[M].北京:机械工业出版社,2004.
[17] ITU-T Recommendation H.261. Video Codec for Audiovisual Services at p*64kbit/s[S].
[18] ITU-T Recommendation H.263. Video Coding for Low Bitrate Communication[S].
[19] "Overview of the H.264 / AVC Video Coding Standard" [R],IEEE Transactions On Circuits And Systems For Video Technology. JULY 2003.
[20]楼剑、陆亮、虞露等.H.264标准的特点和改进方法电视技术[J].2003年第6期:13-15.
[21]李宾高. H.264编码系统的特点及其应用前景[J].TV技术.2003 N0.6:1921.
[22] M. Reha Civanlar, Richard V. Kollarits, etc. , IP-Networked Multimedia Conferencing[J]. IEEE Signal Processing Magazine, 2000,7:31-43
[23] ITU-T Recommendation G..711. Pulse Code Modulation(PCM) of Voice Frequencies[S]. 1993.
[24] ITU-T Recommendation G.722. 7K Hz Audio-Coding Within 64Kbps[S]. 1993.
[25] ITU-T Recommendation G.723.1. Dual Rate Speech Coder for Multimedia Communications Transmitting at 5.3 AND 6.3 kbit/s[S]. 1996.
[26] ITU-T Recommendation G.728. Coding of Speech at 16Kbps Using Low-delay Code Excited Linear Prediction[S]. 1992.
[27] ITU-T Recommendation G.729. Coding of Speech at 8 kbit/s Using Conjugate-StructureAlgebraic-Code-Excited Linear-Prediction (CS-ACELP) [S]. 1996.
[28]吴晓红,黄永峰.标准下会议系统关键技术分析[R].武汉职业技术学院,2004,5.
[29]陈柏生,郑建德,施华.视频会议系统及其关键技术[R].厦门大学计算机科学系,2004,8.
[30]纪雯.网上音视频信息传输及处理的研究和实现[D].西北工业大学,2003.
[31] M.J.Perez-luguc, T.D.C.Little. A temporal reference frame work for multimedia synchronization[J]. IEEE J.SAC, 1998, Vol. 19, No.6.
[32]蔡安妮.多媒体通信技术基础[M].北京:电子工业出版社,2008:207.
[33] C.M.Huang, C.Wang. Synchronization for Interactive Multimedia Presentations[J]. IEEE Multimedia, 2002,5(4):46-61.
[34]I.Nikolaidis. Towards Synchronization Distribution on the Internet[J]. IEEE International Conference on. Performance, Computing and Communications, 2001:71-76.
[35]曹理宇,姚丹霖.MPEG-4流媒体系统总的视音频同步[J].计算机应用.2005,1.
[36] David J Kruglinski等.Visual C++ 6.0技术内幕[M].北京希望电子出版社. 2001,1.
[37] [英] Uyless Black著.温斌等译. VOIP_IP语音技术[M]. 2006.
[38]白成杰,白成林.多媒体通信的媒体同步技术[J].电声技术, 2002, 202:53-56.
[39]张占军.多媒体通信同步技术的研究[J].计算机工程与应用, 2000-10:27-29.
[40]刘汉斌,陈世鸿.时序媒体间同步控制机制的时态模型[J].武汉大学学报, 1999-10: 549-552.
[41]白跃彬.分布式多媒体系统同步机制的研究[J].计算机工程与应用, 2001-7:17-19.
[42]严蔚敏,吴伟民.数据结构(C语言版)[M].北京:清华大学出版社,2002.
[2]黄永峰. IP网络多媒体通信技术[M].北京:人民邮电出版社,2003:1.
[3]钟晓流,吴庚生.多媒体视听技术与应用环境[M].北京:清华大学出版社,2007:351.
[4] C Schlatter. Basic Architecture of H.323 [M]. Sweden: Swiss Education & Research Network , June 2003.
[5]何爱香.基于H.323协议的视频会议及其技术研究.北京工业大学. 2005:5-7.
[6]杨高波,韩龙.视频会议系统综述[J].视频技术应用与工程,2004.
[7] ITU-T Recommendation H.323. Packeted-based Multimedia Communications Systems[S]. 1997.
[8]王寂兰,赵东风.H.323视频会议体系结构的应用研究[J].云南民族学院学报,自然科学版,2003.
[9] ITU-T Recommendation H.225.0. Media Stream Packetization and Synchronization for Visual Telephone Systems on Non-Guaranteed Quality of Service LANS[S]. 1996.
[10] ITU-T Recommendation Q.931. ISDN user-network interface layer 3 specification for basic call control[S].
[11] RFC 1889 RTP: A Transport Protocol for Real-Time Applications[EB]. 1996.
[12]张占军等.多媒体实时传输协议RTP.计算机工程与应用[J].2001:124-126.
[13]沙丽娜,王宁章,覃团发.视频压缩编码国际标准综述[J].电子科技,2005:56-64.
[14] ITU-T Recommendation H.245. Control Protocol for Multimedia Communication[S]. 1996.
[15]马小虎、张明敏、严华明.多媒体数据压缩标准及实现[M].北京:清华大学出版社, 1996.
[16]丁贵广、计文平、郭宝龙等著. Visual C++ 6.0数字图像编码[M].北京:机械工业出版社,2004.
[17] ITU-T Recommendation H.261. Video Codec for Audiovisual Services at p*64kbit/s[S].
[18] ITU-T Recommendation H.263. Video Coding for Low Bitrate Communication[S].
[19] "Overview of the H.264 / AVC Video Coding Standard" [R],IEEE Transactions On Circuits And Systems For Video Technology. JULY 2003.
[20]楼剑、陆亮、虞露等.H.264标准的特点和改进方法电视技术[J].2003年第6期:13-15.
[21]李宾高. H.264编码系统的特点及其应用前景[J].TV技术.2003 N0.6:1921.
[22] M. Reha Civanlar, Richard V. Kollarits, etc. , IP-Networked Multimedia Conferencing[J]. IEEE Signal Processing Magazine, 2000,7:31-43
[23] ITU-T Recommendation G..711. Pulse Code Modulation(PCM) of Voice Frequencies[S]. 1993.
[24] ITU-T Recommendation G.722. 7K Hz Audio-Coding Within 64Kbps[S]. 1993.
[25] ITU-T Recommendation G.723.1. Dual Rate Speech Coder for Multimedia Communications Transmitting at 5.3 AND 6.3 kbit/s[S]. 1996.
[26] ITU-T Recommendation G.728. Coding of Speech at 16Kbps Using Low-delay Code Excited Linear Prediction[S]. 1992.
[27] ITU-T Recommendation G.729. Coding of Speech at 8 kbit/s Using Conjugate-StructureAlgebraic-Code-Excited Linear-Prediction (CS-ACELP) [S]. 1996.
[28]吴晓红,黄永峰.标准下会议系统关键技术分析[R].武汉职业技术学院,2004,5.
[29]陈柏生,郑建德,施华.视频会议系统及其关键技术[R].厦门大学计算机科学系,2004,8.
[30]纪雯.网上音视频信息传输及处理的研究和实现[D].西北工业大学,2003.
[31] M.J.Perez-luguc, T.D.C.Little. A temporal reference frame work for multimedia synchronization[J]. IEEE J.SAC, 1998, Vol. 19, No.6.
[32]蔡安妮.多媒体通信技术基础[M].北京:电子工业出版社,2008:207.
[33] C.M.Huang, C.Wang. Synchronization for Interactive Multimedia Presentations[J]. IEEE Multimedia, 2002,5(4):46-61.
[34]I.Nikolaidis. Towards Synchronization Distribution on the Internet[J]. IEEE International Conference on. Performance, Computing and Communications, 2001:71-76.
[35]曹理宇,姚丹霖.MPEG-4流媒体系统总的视音频同步[J].计算机应用.2005,1.
[36] David J Kruglinski等.Visual C++ 6.0技术内幕[M].北京希望电子出版社. 2001,1.
[37] [英] Uyless Black著.温斌等译. VOIP_IP语音技术[M]. 2006.
[38]白成杰,白成林.多媒体通信的媒体同步技术[J].电声技术, 2002, 202:53-56.
[39]张占军.多媒体通信同步技术的研究[J].计算机工程与应用, 2000-10:27-29.
[40]刘汉斌,陈世鸿.时序媒体间同步控制机制的时态模型[J].武汉大学学报, 1999-10: 549-552.
[41]白跃彬.分布式多媒体系统同步机制的研究[J].计算机工程与应用, 2001-7:17-19.
[42]严蔚敏,吴伟民.数据结构(C语言版)[M].北京:清华大学出版社,2002.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |