面向手写多功能视频会议多媒体数据的采集、再现及安全利用的研究实现

【作者】 邹疆；

【导师】 丁怀东；

【作者基本信息】 昆明理工大学 ， 计算机应用技术， 2006， 硕士

【摘要】 多媒体视频会议系统提供了异地用户共享多种信息、实时交互以及协同工作的综合平台，成为了当前政府、企业办公，家庭个人学习生活中最佳的现代网络交流和协同工作手段之一。本论文的研究是云南省科技厅国际合作计划的基会资助项目(项目编号：2002GH07)《新型人机接口—电子笔多功能网络视频会议实时通信技术的研究开发》的一部分。本论文研究是基于微软的NetMeeting SDK开发包的基础上，研究实现了手写电子笔多功能视频会议系统多媒体数据采集、再生以及安全利用功能的子系统，从而完善了视频会议系统的应用功能。本论文参考本系统有关白板功能及前期研究结果的基础上，对“新型人机接口—电子笔多功能网络视频会议实时通信技术的研究开发”课题中多媒体数据的处理进行了研究，设计了手写多功能视频会议多媒体数据(包括音频、视频、手写工作页面等)的采集系统，实现了本视频会议系统中多媒体数据的采集保存。论文还结合本系统所特有的个性化手写笔多功能特点，设计并实现了包括音频、视频、手写工作页的多媒体会议数据再现(重播)功能。扩大了该视频会议系统的应用范围。论文还基于Hash算法(MD5加密方案)，实现了手写多功能视频会议多媒体数据的安全加密。为本视频会议系统多媒体数据的安全利用提供了技术保证。也提高了手写多功能视频会议结果的安全性和实用价值。本系统通过在多种网络环境下进行多次实际测试，效果良好。为今后该系统进一步实用化、产品化开发打下了良好的基础。更多还原

【Abstract】 The multimedia videoconference system has provided the comprehensive platform for the different users sharing multiple messages, real-time cooperative work and CSCW, has become the best communications tools when the government and the enterprise have to work or the family member has to study. The contents of this paper are a part of the study ’R&D of real time communication technology supported tablet in network videoconference’ . It is an international cooperation fund project(the project serial number: 2002GH07) that supported by the Yunnan Province Science and Technology Office. The research of the paper is based on Microsoft’s NetMeeting SDK. The paper has realized the digital pen multi-purpose video conference system multimedia data acquisition, the regeneration and the safe use subsystem, thus has consummated the video conference system application function.The paper has referred to this system related white table function and in the earlier period research foundation, has studied the contents of multimedia data processing in the project, has designed the multi-purpose video conference multimedia data (including audio, video, hand-written work page and so on) gathering system, has realized in this videoconference system the multimedia data preservation. The paper unifies this system unique personalization writing by digital pen multi-purpose characteristic, designs and realizes including the audio, the video, the hand-written work page multimedia conference data reappearance. These functions expand the videoconference system application scope. Based on the Hash algorithm (MD5 encryption scheme), the paper realizes digital pen the multipurpose videoconference multimedia data the safe encryption. So they can provide the technical guarantee for this videoconference system multimedia data safe use, can enhance digital pen the multipurpose videoconference result the security and the practical value.This system had taken tests many times in the many kinds of network environments and the effect is satisfied. For the next further practical application, the test has built a good foundation.更多还原