大屏幕投影系统中基于软件的无缝拼接技术  

Design of Software-based Seamless Tiling Technology in a Large Scalable Multi-Projector 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,浙江杭州310053 [2]杭州电子科技大学图形图像研究所,浙江杭州310018

出　　处：《计算机仿真》2009年第5期227-231,共5页Computer Simulation

基　　金：国家自然科学基金(60303028)

摘　　要：为了克服现有大多数投影系统价格昂贵,投影形式单一,需要专业人员维护的局限性,提出了基于软件的无缝拼接技术。在开放源码的三维绘制引擎OpenSceneG raph基础上,通过对大屏幕系统三个关键技术(基于集群机的分布式图形绘制及其同步控制技术、几何校准、颜色亮度校准)的研究,结合大屏幕投影的应用特点,提出了一套利用普通投影机和具有普通图形卡的PC机实现的大屏幕无缝拼接的三维渲染软件平台。实践证明该方法效果理想,成本投入低,易于操作。In order to overcome the limitations of those expensive projector systems, this paper discusses the Seamless Tiling Technology in a Large Scalable Multi - Projector Display System. Based on the open source technology OpenSceneGraph and Direct Show, three main technologies of display system are analyzed： distributed parallel rendering based on a cluster of personal computers using a well - defined synchronization technique, geometry calibration and color and light intensity blending. Further, in combination with specialized applications for large screen displays, the paper introduces a seamless large display system based on low cost personal computers and projectors. The experiment shows that the method is easy to operate and low cost.

关 键 词：分布式并行绘制 几何校准 颜色亮度校准 高分辨率 弧状屏幕 无缝拼接 

分 类 号：TP317.4[自动化与计算机技术—计算机软件与理论]