| Title | Design and Realization of the Whiteboard Function Contained in Online Graphic Modeling System |
| Abstract | Adobe Flex is the most comprehensive solution for RIA Technology across the enterprise and over the Web.It provides a highly productive development model that easily integrates with existing processes and is based on standards and best pratices that have emerged over the last ten years of Internet development. In Flash/Flex Technology ,Flash Media Server(FMS), is described as the most convenient and efficient solutions for the current development of Web audio and video applications,and supply increasingly wide range of applications on Web application development. But the excellent feature of FMS will not be accepted by most of developers because of its unavailable free of charge to users.So the multimedia server- open Red5 is fond of by more developers.It is an open source flash server that supports Streaming Audio/Video;Live Stream Publishing;Shared Objects;Remoting;Recording Client Streams and so on. Real-time Messaging Protocol(RTMP),based on TCP/IP protocol ,is a proprietary protocol developed by Adobe Systems for efficient transfers of streaming audio, video and data over the Internet, between a Flash player and a server. Since encryption isn’t available as a feature of RTMP, RTMP sends unencrypted data,including authentication information,such as a username and a password.The thesis comes from a program of Lenovo Corporate Research & Development. The program is working to develop an online graphic modeling system, and using Flash/Flex technology to set up a multimedia cooperation environment, joining the text-chat and Audio/Video services. This system is defferent from the traditional desktop chat or drawing tools,but it is present as an website that can be integrated as part of other electronic products.It meets the professional,commercial user requirements and ease of use, which is located in high-end users. The online whiteboard allows modeling everywhere at any moment,and also supports modeling from different places simultaneously. Consequently, the system will be widely used in the future as a platform for display and share. In conclusion, this is a research full of practicality and valuable.The system based on the Struts,Hibernate,Spring in MVC framework of Software Engineering consists of several sub-systems, including drawing model, saving and releasing, downloading and exporting,uploading , online whiteboard. Basic functions of this system can be summarized as online Visio, online releasing and synchronizing cooperation. The system provides a simple and convenient GUI, and its expansibility is strong enough to integrate 3D graphic modeling and cooperative community, which allows the online modeling to be applied locally. Its rich clinet is compatible with different browsers, and its program languages, Java and ActionScript, are independent of platforms, which can be applied in different platforms. The development of the system follows software life cycle, which includes designing,coding,testing and CVS project management.According to the test report and user feedback, the system with whole functions can work stablely, which also provide a more comfortable method for the users to create, modify, share the graphics and and realize the cooperation synchronization. |
| Category | Internet |
| Keywords | Flex, online graphic modeling, real-time collaborative, Red5, |
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| Pages | 147 |
| Price | US$80.00 |
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Design and Realization of the Whiteboard Function Contained in Online Graphic Modeling System
Billy HU, Ph.D
E-Mail:itpaper@hotmail.com
TEL:1-888-786-998A
