面向视频会议系统的手写笔通信技术的研究
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摘要
桌面视频会议系统具有视频、音频、电子白板、文件传输、应用程序共享等功能，是当前视频会议发展的方向。本课题主要分析电子白板系统，并将手写板引入其中。由于手写板的引入，功能参数的增加，通过对这些参数的合理利用，开发出毛笔、钢笔、铅笔、浓淡笔、枯笔等一系列模拟真实笔的多种笔型功能。以这些功能为基础，设计出功能丰富、更具表现力的电子白板系统，以增强视频会议的实用性，使之更符合人们进行交流所需要的视觉、听觉和手写的自然习惯。
同时考虑到视频、音频和电子白板的同步性以及开发的工作量，我们本着开发和集成并重的方针，以Visual C++为开发工具，充分利用Microsoft NetMeeting COM组件实现功能丰富的电子白板系统。由于多用户对共享空间的并发操作引发冲突，分析其原因，采用一种基本的并发控制策略来解决并发冲突问题。
最后在实验室局域网和昆明理工大学校园网上进行部分实验，效果良好。已取得了预期的阶段性成果。
Desktop videoconference system possesses functions of video , audio , whiteboard , file transfer , application sharing,it is the developmental direction of videoconference currently.This task mainly analyses the white board system of them and tablet is inducted into this system. Because of introduction of tablet and increase of function parameters, we empolder a series of multiple pen-type functions which simulate true pen and include brush pen, pen, pencil, shade-pen, withered-pen, through utilizing these parameters reasonably .Take these functions as basis, we design more functions and much expressive force whiteboard system which buildup practicability of videoconference and make it accord with people natural custom of vision, hearing, writing to communication .
At the same time, considering synchronization of video , audio , white board and workload of exploitation we realize more 'functions whiteboard system. We take integration and exploitation as guideline, take Visual C++ as tool and make full use of Microsoft NetMeeting COM module. Because multiple users operate on sharing space synchronously and bring conflict, we analyse the reason and adopt a basic concurrency control strategy to solve problem of concurrency conflict.
At last, we test partly through lab LAN and campus web of Kunming university of science and technology and achieve good effect.we get moment achievement of anticipation.
同时考虑到视频、音频和电子白板的同步性以及开发的工作量，我们本着开发和集成并重的方针，以Visual C++为开发工具，充分利用Microsoft NetMeeting COM组件实现功能丰富的电子白板系统。由于多用户对共享空间的并发操作引发冲突，分析其原因，采用一种基本的并发控制策略来解决并发冲突问题。
最后在实验室局域网和昆明理工大学校园网上进行部分实验，效果良好。已取得了预期的阶段性成果。
Desktop videoconference system possesses functions of video , audio , whiteboard , file transfer , application sharing,it is the developmental direction of videoconference currently.This task mainly analyses the white board system of them and tablet is inducted into this system. Because of introduction of tablet and increase of function parameters, we empolder a series of multiple pen-type functions which simulate true pen and include brush pen, pen, pencil, shade-pen, withered-pen, through utilizing these parameters reasonably .Take these functions as basis, we design more functions and much expressive force whiteboard system which buildup practicability of videoconference and make it accord with people natural custom of vision, hearing, writing to communication .
At the same time, considering synchronization of video , audio , white board and workload of exploitation we realize more 'functions whiteboard system. We take integration and exploitation as guideline, take Visual C++ as tool and make full use of Microsoft NetMeeting COM module. Because multiple users operate on sharing space synchronously and bring conflict, we analyse the reason and adopt a basic concurrency control strategy to solve problem of concurrency conflict.
At last, we test partly through lab LAN and campus web of Kunming university of science and technology and achieve good effect.we get moment achievement of anticipation.
引文
[1]http://www.Microsoft.com/NetMeeting/sdk.Microsoft NeetMeeting 2.1SDK
[2]张江山，鲁平．《视频会议系统及其应用》．北京．北京邮电出版社．2000．1
[3]余英，梁刚．《Visual C++实践与提高COM和COM+篇》．北京．中国铁道出版社．2001．2
[4]史岚，邱莹，申志勇．基于Netmeeting COM组件的远程医疗与会诊系统．计算机工程与应用．2000年第3期
[5]李志华．基于Netmeeting COM控件的远程监控系统设计．交通与计算机．2001年第4期
[6]Alex.Krassel, Stever. Robinson, Panhter. IMicrosoft NetMeeting 2.1 COM Interface: Understanding How They Work. software. Apile 10 1998
[7]钱能．C++程序设计教程．北京．清华大学出版社．2001．7
[8]周园春，李淼，张建，李晓鸥，张飞．基于COM组件的网络专家系统推理机的研究和实现．计算机工程与应用．2002．22
[9]贺小箭，李方敏，尤晋元．基于校园网带宽利用率最优的视频组播机制．计算机工程与应用．2002．22
[10]L Gao, D Towsley. Supplying instantaneous video-on-demand services using controlled multicast[C].In:Proc IEEE International Conference on Multimedia Compuuting and System. 1999
[11]Dan A, Sitaram D, Shahabuddin P.Dynamic patching policies for an on-demand video server[J]. Multimedia Systems, 1996;4(3)
[12]李一雷，周俊辉，谢维信．H.323系统C++类库和基本呼叫建立的实现．计算机与工程．2002．22
[13]刘富强等．多媒体图像技术及应用．北京．人民邮电出版社．2002．7
[14]张京辉，谭庆平．多媒体电子白板的设计与应用．计算机工程与应用．2003．3
[15]葛声，孙瑛霖，杜宗霞．基于角色的协作关系建模研究．计算机工程与应用．2003．3
[16] 向世明．Visual C++数字图像与图像处理．北京．电子工业出版社．2002．3
[17] 谢希仁．计算机网络．大连．大连理工大学出版社．2000．6
[18] Li D, Muntz RCOCA: Collaborative Objects Coordination Architecture[C]In: Proceedings of the ACM CSCW98 Coference on Computer Supported Cooperative Work, New York: ACM Press, 1998:179～188
[19] 郭丽，丁怀东．电子笔书画系统中毛笔笔型的模拟研究．昆明理工大学学报．2002．6
[20] 张颉颖，张振宇，王成焘．基于同步协作的分布式网上关节置换临床系统．计算机工程与应用．2002．22
[21] Kamel N N.A unified characterization for shared multimedia CSCW workspace designs. Information and Software Technology, Issue: 1999-01-15: 1～14
[22] 潘力均，许滨，张衍．大容量信息实时传输技术研究．中国空间科学技术．2002．4
[23] Kenneth D.Reed著，孙坦，张学锋等译．协议分析．北京．电子工业出版社．2002．1
[24] 张明德，王永东．视频会议系统原理与应用．北京．北京希望电子出版社．1999．8
[25] Thuan L. Thai著，陈逸译．DCOM入门．北京．中国电力出版社．2001．10
[26] R Carter, M Crovella. Measuring bottleneck link speed in packetswSitched networks.Tech-nical rport, Boston U, Technical Report TR-96-006, 1996
[27] R Carter, M Crovella. Dynamic server selection using bandwidth probing in wide-area net-works. Technical report, Boston U, Technical Report TR-96-007, 1996
[28] 阮秋琦．数字图像处理学．北京．电子工业出版社．2001．1
[29] 本书编写者编著．Windows API函数参考手册．北京．人民邮电出版社．2002．10
[30] 刘长明，杨工明．Visual C++实践与提高—多媒体篇．北京．中国铁
道出版社．2001．3
[31]“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”项目研究报告
[32]李立杰．多媒体及其通信技术．北京．机械工业出版社．2002．2
[33]Wintab: Advanced Pointing Device Management for Windowed Environments LCS/Telegraphics. 1994.12.
[34]北京众和天宝科技有限公司．天宝多媒体智能白板的应用．电声技术．2001．1
[35]David J.Kruglinski, Scot Wingo, George Shepherd著，希望图书创作室译．Visual C++技术内幕6.0．北京．北京希望电子出版社．1999．6
[36]孙家广．计算机图形学．北京．清华大学出版社．1998．4
[37]胡传海，书法教程．北京．上海人民美术出版社．1998．7
[38]葛淑云．H．323视讯系统的建设与应用．第六届全国计算机应用联合学术会议论文集．2002
[39]潘爱民．COM原理与应用．北京．清华大学出版社．1999
[40]冯少荣．分布式组件对象模式DCOM的研究及应用．第六届全国计算机应用联合学术会议论文集．2002
[41]Xianshi Ren and Shinji Moriya, Improving Selection Performance on Pen-Based System A Study of. Pen-Based Interaction for Selection Tasks,ACM Transactionon Computer-Human Interacttion, September, 2000, Vol 7,No 3.
[42]Georges Winkendbach, David Salesin H. Computer-Generated Pen and Ink Illustration[J]. Proceedings of SIGGRAPH 94(Orlando, Florida, July 24-29, 1994). In Computer Graphics, Annual Conference Series, 1994.
[2]张江山，鲁平．《视频会议系统及其应用》．北京．北京邮电出版社．2000．1
[3]余英，梁刚．《Visual C++实践与提高COM和COM+篇》．北京．中国铁道出版社．2001．2
[4]史岚，邱莹，申志勇．基于Netmeeting COM组件的远程医疗与会诊系统．计算机工程与应用．2000年第3期
[5]李志华．基于Netmeeting COM控件的远程监控系统设计．交通与计算机．2001年第4期
[6]Alex.Krassel, Stever. Robinson, Panhter. IMicrosoft NetMeeting 2.1 COM Interface: Understanding How They Work. software. Apile 10 1998
[7]钱能．C++程序设计教程．北京．清华大学出版社．2001．7
[8]周园春，李淼，张建，李晓鸥，张飞．基于COM组件的网络专家系统推理机的研究和实现．计算机工程与应用．2002．22
[9]贺小箭，李方敏，尤晋元．基于校园网带宽利用率最优的视频组播机制．计算机工程与应用．2002．22
[10]L Gao, D Towsley. Supplying instantaneous video-on-demand services using controlled multicast[C].In:Proc IEEE International Conference on Multimedia Compuuting and System. 1999
[11]Dan A, Sitaram D, Shahabuddin P.Dynamic patching policies for an on-demand video server[J]. Multimedia Systems, 1996;4(3)
[12]李一雷，周俊辉，谢维信．H.323系统C++类库和基本呼叫建立的实现．计算机与工程．2002．22
[13]刘富强等．多媒体图像技术及应用．北京．人民邮电出版社．2002．7
[14]张京辉，谭庆平．多媒体电子白板的设计与应用．计算机工程与应用．2003．3
[15]葛声，孙瑛霖，杜宗霞．基于角色的协作关系建模研究．计算机工程与应用．2003．3
[16] 向世明．Visual C++数字图像与图像处理．北京．电子工业出版社．2002．3
[17] 谢希仁．计算机网络．大连．大连理工大学出版社．2000．6
[18] Li D, Muntz RCOCA: Collaborative Objects Coordination Architecture[C]In: Proceedings of the ACM CSCW98 Coference on Computer Supported Cooperative Work, New York: ACM Press, 1998:179～188
[19] 郭丽，丁怀东．电子笔书画系统中毛笔笔型的模拟研究．昆明理工大学学报．2002．6
[20] 张颉颖，张振宇，王成焘．基于同步协作的分布式网上关节置换临床系统．计算机工程与应用．2002．22
[21] Kamel N N.A unified characterization for shared multimedia CSCW workspace designs. Information and Software Technology, Issue: 1999-01-15: 1～14
[22] 潘力均，许滨，张衍．大容量信息实时传输技术研究．中国空间科学技术．2002．4
[23] Kenneth D.Reed著，孙坦，张学锋等译．协议分析．北京．电子工业出版社．2002．1
[24] 张明德，王永东．视频会议系统原理与应用．北京．北京希望电子出版社．1999．8
[25] Thuan L. Thai著，陈逸译．DCOM入门．北京．中国电力出版社．2001．10
[26] R Carter, M Crovella. Measuring bottleneck link speed in packetswSitched networks.Tech-nical rport, Boston U, Technical Report TR-96-006, 1996
[27] R Carter, M Crovella. Dynamic server selection using bandwidth probing in wide-area net-works. Technical report, Boston U, Technical Report TR-96-007, 1996
[28] 阮秋琦．数字图像处理学．北京．电子工业出版社．2001．1
[29] 本书编写者编著．Windows API函数参考手册．北京．人民邮电出版社．2002．10
[30] 刘长明，杨工明．Visual C++实践与提高—多媒体篇．北京．中国铁
道出版社．2001．3
[31]“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”项目研究报告
[32]李立杰．多媒体及其通信技术．北京．机械工业出版社．2002．2
[33]Wintab: Advanced Pointing Device Management for Windowed Environments LCS/Telegraphics. 1994.12.
[34]北京众和天宝科技有限公司．天宝多媒体智能白板的应用．电声技术．2001．1
[35]David J.Kruglinski, Scot Wingo, George Shepherd著，希望图书创作室译．Visual C++技术内幕6.0．北京．北京希望电子出版社．1999．6
[36]孙家广．计算机图形学．北京．清华大学出版社．1998．4
[37]胡传海，书法教程．北京．上海人民美术出版社．1998．7
[38]葛淑云．H．323视讯系统的建设与应用．第六届全国计算机应用联合学术会议论文集．2002
[39]潘爱民．COM原理与应用．北京．清华大学出版社．1999
[40]冯少荣．分布式组件对象模式DCOM的研究及应用．第六届全国计算机应用联合学术会议论文集．2002
[41]Xianshi Ren and Shinji Moriya, Improving Selection Performance on Pen-Based System A Study of. Pen-Based Interaction for Selection Tasks,ACM Transactionon Computer-Human Interacttion, September, 2000, Vol 7,No 3.
[42]Georges Winkendbach, David Salesin H. Computer-Generated Pen and Ink Illustration[J]. Proceedings of SIGGRAPH 94(Orlando, Florida, July 24-29, 1994). In Computer Graphics, Annual Conference Series, 1994.