真三维显示系统的构建及其成像效果分析  

Construction of a true three-dimensional volumetric display system and its imaging effect

作　　者：周厉颖[1] 陈国华[1] 黄建彪[1] 周星[1] 

机构地区：[1]北京化工大学机电工程学院,北京100029

出　　处：《北京化工大学学报（自然科学版）》2012年第6期99-104,共6页Journal of Beijing University of Chemical Technology(Natural Science Edition)

摘　　要：基于人眼的视觉暂留原理,从机械和电路两个方面构建了基于LED旋转屏的真三维显示系统,运用切面原理把空间体系里的三维图像转换成N份平面二维体系里的二维曲线;同时提出了新的扫描映射方法曲线网格离散化用于对图像和LED灯的位置关系的精确处理。通过硬件平台的实验,验证了不同转速带对真三维显示的影响。实验表明,存在最佳电机转速带使LED旋转真三维显示效果最佳,在转速饱和区之外图像显示效果将受到影响。A true three-dimensional display system for a light emitting diode（LED） rotating screen based on persistence of vision has been constructed taking into account both mechanical and electrical considerations.The three-dimensional image was converted into N copies of two-dimensional curves in a two-dimensional space system using section principles.A new scanning method—curvilinear grid discretization— is proposed for determining the positional relationships of the images and LED lights for accurate processing.Different rotation speed zones affect the true three-dimensional display effect,as verified by experiments on the hardware platform.The experimental results showed that an optimum motor rotation speed zone,which can make the best display effect,actually exists in practice.Furthermore,the display effect is reduced outside the speed saturation region.

关 键 词：真三维显示 结构 转速 坐标体系变换 曲线离散化 

分 类 号：TH39[机械工程—机械制造及自动化]