平面屏式真三维立体显示的图像数据生成方法

Acquisition of image data for a flat screen based true 3D volumetric display

真三维立体显示是目前最新的立体数据显示,其图像存在于真实三维空间中,可提供几乎所有的生理和心理深度暗示。针对真三维显示数据获取问题,分析了基于多投影机和平面旋转屏的真三维立体显示器的系统结构与显示原理,提出了一种基于获取模型切片图像的真三维显示数据的生成方法。首先,计算两个裁剪平面的位置;然后,启用裁剪平面切割三维模型获取切片图像,按照预设旋转角度控制模型的位置可获取各个角度的切片图像;最后,应用该方法开发了一个切割模型获取其切片图像的软件,并通过一个动物模型的应用实例验证了该方法的有效性。

True 3D volumetric display is the latest volume data display whose image floats in real 3D space and can offer people both physiological and psychological depth cues.Hardware structure and display principals of true 3D volumetric display based on multi-projector and rotating flat screen were analyzed to acquire true 3D volumetric display data.An approach to acquire true 3D volumetric display data by obtaining slice images of a model using OpenGL was proposed.Positions of two clip planes were first calculated,and then view volume was restrained by enabling two clip planes to cut a model and obtain its image slices.Finally,image slices from different perspective were obtained by controlling positions of a model according to the preset rotating angle.Then,software using the above method was developed to acquire true 3D volumetric display data.The application example of cutting an animal model indicates the method was effective.