Yu Xunbo, Sang Xinzhu, Gao Xin, Chen Duo, Liu Boyang, Liu Li, Gao Chao, Wang Peiren
Opt Express. 2019 May 27;27(11):16024-16031. doi: 10.1364/OE.27.016024.
Real-time terrain rendering with high-resolution has been a hot spot in computer graphics for many years, which is widely used in electronic maps. However, the traditional two-dimensional display cannot provide the occlusion relationship between buildings, which restricts the observers' judgment of spatial accuracy. With three projectors, compound lenticular lens array and holographic functional screen, a dynamic three-dimensional (3D) light-field display with 90° viewing angle is demonstrated. Three projectors provide views for the right 30 degrees, center 30 degrees and left 30 degrees, respectively. The holographic functional screen recomposes the light distribution, and the compound lenticular lens array is optimized to balance the aberrations and improve the display quality. In our experiment, the 3D light-field image with 96 perspectives provides the right geometric occlusion and smooth parallax in the viewing range. By rendering 3D images and synchronizing projectors, the dynamic light field display is obtained.
多年来，高分辨率实时地形渲染一直是计算机图形学中的一个热点，广泛应用于电子地图。然而，传统的二维显示无法提供建筑物之间的遮挡关系，这限制了观察者对空间精度的判断。利用三台投影仪、复合双凸透镜阵列和全息功能屏幕，展示了一种具有90°视角的动态三维（3D）光场显示器。三台投影仪分别为右侧30度、中间30度和左侧30度提供视图。全息功能屏幕重新组合光分布，并对复合双凸透镜阵列进行优化，以平衡像差并提高显示质量。在我们的实验中，具有96个视角的3D光场图像在观看范围内提供了正确的几何遮挡和平滑视差。通过渲染3D图像并同步投影仪，获得了动态光场显示。
