摘要
建立了基于二维点阵屏旋转的体显示系统,在三维空间内预设位置上产生的体像素均来源于快速旋转和瞬时发光的点阵像素,利用人眼的视觉暂留效应得到三维图像.当逐行或逐列地扫描点阵屏时,点阵像素在扫描时序上的不同步和屏幕的旋转运动将导致在不同扫描瞬间产生的体像素不在同一空间方位上,因而虽然所有的点阵像素总是处于屏幕所在的物理平面内,但在一次完整扫描后由之产生的瞬态体像素将不再处于同一个二维平面内.建立以高速发光二极管为点阵像素的体显示系统,实验结果表明,在高速扫描情况下,体像素的实际方位与预设方位的偏差可以忽略,系统能够较好地再现三维模型,并且可以任意选择视点直接观看.
In volumetric 3D display systems which based on a rotating 2D dot matrix panel, voxels at predefined locations were generated by rapidly rotating and instantaneously scanned dot matrix pixels. The voxels are integrated into a 3D image due to persistence of vision. Analysis on dot matrix scanning mode shows that when the panel is scanned line-by-line or column-by-column, voxels created at different moments will not have the same orientation due to the asynchronism in pixel scanning sequence and the rotation of the panel. Thus, although all the pixels are located on the physical plane of the dot matrix panel, the instantaneous voxels created by them after a complete scanning will not remain in a 2D plane. A volumetric display system which using LEDs of quick response time as dot matrix pixels was set up. In the case of high-speed scanning, the difference of displayed information from the original information in orientation can be ignored. Profiles of complicated 3D models can be reconstructed well and be observed from any position around the system without the need for any special viewing aids.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2005年第8期1273-1276,共4页
Journal of Zhejiang University：Engineering Science
关键词
显示器件
三维显示
体显示
体积扫掠技术
时序扫描
display device
3D display
volumetric display
swept volume technique
sequential scanning
