期刊文献+

基于PSTN的远程多媒体监控系统 被引量:11

PSTN Based Remote Multimedia Surveillance System
下载PDF
导出
摘要 基于 PSTN网的远程多媒体监控技术 ,其关键是针对监控应用要求 ,在保证一定的图象和语音质量的同时 ,对图象与语音以尽量高的压缩率进行压缩 ,以及对图象与语音压缩进行实时处理 ;在所介绍的基于 PSTN的远程多媒体监控系统中 ,图象和语音压缩处理是采用 H.2 6 3和 G.732 .1协议 .首先介绍了该系统组成结构 ;然后在简要介绍基于 H.2 6 3和 G.732 .1协议的图象与语音压缩算法的基础上 ,进一步讨论了针对远程多媒体监控的应用要求 ,基于图象与语音压缩的若干考虑 ,着重讨论和介绍了该系统的关键组成部分 ,即多媒体远程监控终端机的设计与实现 ,提出了基于高速 DSP技术的图象与语音压缩实时处理的关键技术及所采取的措施 。 In the application of remote multimedia surveillance based on PSTN(Public Switching Telephone Network), one of the key technologies is the compression of video and speech data stream at a ratio as high as possible, while the quality of the video and speech are ensured for the surveillance application; Other key technologies are such as the real time processing of the compression of video and speech data stream. The PSTN based remote multimedia surveillance system, which is introduced in the article, compresses the video data stream based on the protocol H 263 and speech data stream based on the protocol G 723 1. The article first introduces the architecture of the system. Then after a short introduction to the H 263 and G 723 1 protocols based video and speech compression algorithms, some considerations with the video and speech compression are discussed for the requirements of the remote multimedia surveillance application. Further, the design and realization of the remote surveillance terminal, which is the key part of the system, are introduced with details. Also the key technology and method of the real time processing of speech and video compression based on DSP(Digital Signal Processor) are presented. As a conclusion, the main performances of the system are reported at the end of the article.
出处 《中国图象图形学报(A辑)》 CSCD 北大核心 2001年第6期594-598,共5页 Journal of Image and Graphics
基金 "8 6 3"通信主题项目 (86 3-3171-96 0 4-0 3)
关键词 图象压缩 语音压缩 数字信号处理器 PSTN 公众电话网 远程多媒体 监控系统 结构 Multimedia, Video compression, Speech compression, DSP
  • 相关文献

参考文献1

二级参考文献2

共引文献7

同被引文献37

  • 1史美林.CSCW:计算机支持的协同工作[J].通信学报,1995,16(1):55-61. 被引量:120
  • 2[1]Shapiro Jerome M.Embedded image coding using zerotrees of wavelet coefficient[J].IEEE Trans On Signal processing,1993,(6):101-107.
  • 3A S Lewis, G Knowles, VLSI architecture for 2-D Daubechies wavelet transform without multipliers, Electronics Letters, 1991, 27(2), 171-173.
  • 4M Vishwanath, R M Owens, M J Irwin, VLSI architecture for the discrete wavelet transforms,IEEE Trans. on CAS-II, 1995, CAS-II-42(5), 305-316.
  • 5J M Shaprio, Embedded image coding using zerotrees of wavelet coefficients, IEEE Trans. on SP, 1993, SP-41(12), 3445-3462.
  • 6A Said, W A Pearlman, A new fast and efficient image codec based on set partitioning in hierarchical trees, IEEE Trans. on CAS, Video Tech., 1996, 6(3), 243-249.
  • 7W K Lin, B W -H Ng, N. Burgess, Reduced memory zerotree coding algorithm for hardware implementation, IEEE ICMCS'99, Florence, Italy, 1999, 231-235.
  • 8Wang Guoyu, High integration CMOS vision chips, in Proc. SPIE, 1996, Vol. 2894, 123-131,Beijing.
  • 9Wu Da-peng,hou Y T,Zhu Wen-wu,et al.On End-to-End Architecture for Transporting MPEG-4 Video Over The Internet [J].IEEE Transactions on Circuits and Systems for Video Technology,2000,10(6):923-941.
  • 10TMS320C6711 Floating-Point Digital Signal Processors[M].Texas Instruments Incorporated,2002.

引证文献11

二级引证文献23

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部