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IMS网络CSCF功能实体安全问题研究 被引量:2
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作者 刘彩霞 俞定玖 陈丹 《信息工程大学学报》 2013年第2期243-246,252,共5页
CSCF作为IMS网络的核心功能实体,确保其安全运行至关重要。基于IMS网络CSCF实体的功能特点及接口协议,研究分析了开放的IMS网络环境下,CSCF面临的典型安全问题;不同攻击行为的原理及带来的安全威胁。为研究和设计CSCF实体安全防护技术... CSCF作为IMS网络的核心功能实体,确保其安全运行至关重要。基于IMS网络CSCF实体的功能特点及接口协议,研究分析了开放的IMS网络环境下,CSCF面临的典型安全问题;不同攻击行为的原理及带来的安全威胁。为研究和设计CSCF实体安全防护技术提供了重要依据。 展开更多
关键词 IP多媒体子系统 呼叫会话控制功能 恶意代码 DOS攻击 畸形SIP消息
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多媒体网络系统在工程制图教学中的应用
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作者 罗益宁 《益阳师专学报》 2001年第6期79-81,共3页
阐述了计算机应用技术的高速发展 ,多媒体网络教学系统在工程制图课程中的应用与实践 ,从而改善了教师的教学环境、教学方式 ,并提高了学生的学习兴趣和积极性 .
关键词 多媒体网络教学系统 工程制图 高等教育 教学环境 教学方式 计算机绘图
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A comprehensive review of significant researches on content based indexing and retrieval of visual information 被引量:3
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作者 R. PRIYA T. N. SHANMUGAM 《Frontiers of Computer Science》 SCIE EI CSCD 2013年第5期782-799,共18页
Developments in multimedia technologies have paved way for the storage of huge collections of video doc- uments on computer systems. It is essential to design tools for content-based access to the documents, so as to ... Developments in multimedia technologies have paved way for the storage of huge collections of video doc- uments on computer systems. It is essential to design tools for content-based access to the documents, so as to allow an efficient exploitation of these collections. Content based anal- ysis provides a flexible and powerful way to access video data when compared with the other traditional video analysis tech- niques. The area of content based video indexing and retrieval (CBVIR), focusing on automating the indexing, retrieval and management of video, has attracted extensive research in the last decade. CBVIR is a lively area of research with endur- ing acknowledgments from several domains. Herein a vital assessment of contemporary researches associated with the content-based indexing and retrieval of visual information. In this paper, we present an extensive review of significant researches on CBV1R. Concise description of content based video analysis along with the techniques associated with the content based video indexing and retrieval is presented. 展开更多
关键词 nultimedia information content based video retrieval (CBVR) content based video indexing and retrieval (CBVIR) shot segmentation object segmentation feature extraction INDEXING motion estimation QUERYING key frame RETRIEVAL and indexing.
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