Xing Yan, Xia Yun-Peng, Li Shuang, Ren Hui, Wang Qiong-Hua
Opt Express. 2020 Nov 9;28(23):34706-34716. doi: 10.1364/OE.409275.
One of the important features of tabletop 3D displays is the annular viewing area above the display system. In this paper, we propose an annular sector elemental image array (ASEIA) generation method for the tabletop integral imaging 3D display to form the annular viewing zone with smooth motion parallax. The effective pixels of the elemental images are distributed as annular sector, and they are mapped from the perspective images captured by the ring-shaped camera array. Correspondingly, the viewing sub-zones can be formed with an annular sector configuration and can be seamlessly stitched by using the time division scheme. Compared with the previous approach with rectangular elemental image array (EIA) distribution, the number of viewing sub-zones is decreased from 360 to 10 for the same effect of smooth motion parallax. Meanwhile, rendering efficiency is improved. The experimental results show that the proposed method is feasible to produce 360-degree continuous viewpoints in an annular viewing zone.
桌面3D显示器的一个重要特征是显示系统上方的环形观看区域。在本文中，我们提出了一种用于桌面积分成像3D显示器的环形扇形基元图像阵列（ASEIA）生成方法，以形成具有平滑运动视差的环形观看区域。基元图像的有效像素呈环形扇形分布，它们从环形相机阵列捕获的透视图像映射而来。相应地，观看子区域可以形成环形扇形配置，并可以使用时分方案无缝拼接。与先前采用矩形基元图像阵列（EIA）分布的方法相比，在相同的平滑运动视差效果下，观看子区域的数量从360个减少到了10个。同时，渲染效率得到了提高。实验结果表明，所提出的方法对于在环形观看区域中产生360度连续视点是可行的。
