大屏幕无缝拼接系统的应用软件平台开发  

Design of software based on seamless tiling display system

作　　者：俞凌云[1] 王毅刚[2] 王亢[1] 

机构地区：[1]浙江警察学院计算机系,杭州310053 [2]杭州电子科技大学图形图像研究所,杭州310018

出　　处：《计算机应用》2008年第9期2434-2436,2439,共4页journal of Computer Applications

基　　金：国家自然科学基金资助项目(60303028)

摘　　要：在开放源码的三维绘制引擎OpenSceneGraph和Windows视频显示平台Direct Show的基础上,结合大屏幕投影的应用特点,利用一个通过网络连接的PC集群机组,开发了无缝拼接的三维渲染和视频播放大屏幕投影系统的软件平台,使之既可以用来观看各种格式的大屏幕电影,也可以交互浏览各种格式的三维虚拟场景。设计了主机/从机系统架构思想,利用OSG技术加载几何场景和视频,并提出在保留和立即两种模式下的同步控制技术——时间同步和帧同步。实践证明该方法效果理想,投入成本低,易于操作。On the basis of Microsoft DirectShow technology and OpenSceneGraph that is an OpenSource and three dimensional rendering engine, the paper developed a software platform for an easy manageable, flexible, low cost large scalable and seamless tiling display system, which can be used for some applications such as 3D interactively browser and a large display movie playing. According to the thought of sort-first, we used a master / slave setup for our system as well as OSG （OpenSceneGraph） and the Microsoft DirectShow technology to load graphic scenes and videos. We presented two ways to synchronize the output of the PCs on the retained mode and the immediate mode： time synchronization and frame synchronization. Our experiments show that the performance of our newly developed system is comparable to old expensive display system, but with very small hardware cost.

关 键 词：分布式并行绘制 PC集群机 无缝拼接 同步控制 

分 类 号：TN873.4[电子电信—信息与通信工程]