嵌入式三维场景漫游系统的设计与实现

Design and Implementation of Embedded 3D Scene Walkthrough System

针对移动用户对空间信息可视化及基于位置服务的需求,提出JSR-184规范下与嵌入式软硬件环境相关的三维场景漫游系统框架,设计实现一个原型系统,其中包括场景模型设计、场景树构建、灯光摄影机布置、用户交互实现,采用保留模式和立即模式的集成建模方法及三维空间与二维平面的信息互切换机制。测试结果证明,该三维场景系统可以使移动用户享有与桌面环境下相似的位置信息服务功能。

According to the requirements of spatial information visualization and location-based services of mobile subscribers, this paper presents a framework of 3D scene walkthrough system based on JSR-184 standard, designs and realizes the prototype, which includes scene model design, scene-tree construction, lights and cameras arrangement and user interaction. It puts forward the integrated modeling method of retained mode and immediate model and the strategy used in 2D-3D information switching. Test result demonstrates that the 3D scene system makes the mobile subscribers share the advantages in location-based service as those under desktop surroundings.