基于光线追踪的实时可交互计算生成集成成像方法

秦志强; 张文阁; 蒋晓瑜; 闫兴鹏; 严志强

doi:doi:10.3788/gzxb20194809.0911002

光子学报, 2019, 48 (9): 0911002, 网络出版: 2019-10-12

基于光线追踪的实时可交互计算生成集成成像方法

Realtime Interactive Computergenerated Integral Imaging Method Based on Ray Tracing

论文大纲

秦志强 ^*张文阁蒋晓瑜闫兴鹏严志强

作者单位

陆军装甲兵学院信息通信系, 北京 100072

摘要

为提高计算生成集成成像实时交互显示性能和灵活性, 构建与集成成像再现系统结构一致的集成光场视见模型, 通过该模型为单元图像阵列中每个像素生成一条逆向追踪的光线, 使用光线追踪技术并行渲染光线为单元图像阵列像素着色.实验结果表明, 顶点数为565 880的点云模型、面数为977 308的含纹理网格模型在透镜数为22×13、视点数为175×175的4 K显示系统上显示帧率40 fps以上, 并实现了缩放、移动、旋转、显示微调等交互功能.该方法摆脱了虚拟相机模型, 降低了算法复杂度, 利于实现实时交互, 能够应用于基于不同分布形式透镜阵列的集成成像显示系统.

Abstract

To improve the realtime interactive display performance and flexibility of the computer generated integrated imaging, the integral light field viewing model consistent with the structure of the optical reconstruction system in integrated imaging is constructed. A reversely traced ray for each pixel in the elemental image array is generated by integral light field viewing model, the elemental image array is efficiently shaded as all the rays are computed parallely through ray tracing technology. Experimental results show that, a point cloud model with 565 880 vertex, and a mesh model containing textures with 977 308 faces are optically reconstructed on the 4 K display system at a frame rate of over 40 fps, the system have interactive functions such as scaling, moving, rotation and fine adjustment. Getting rid of the virtual camera model, the method make realtime interaction more effective and convenient, and can be applied to the integral imaging based on lens array with different distribution patterns.

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秦志强, 张文阁, 蒋晓瑜, 闫兴鹏, 严志强. 基于光线追踪的实时可交互计算生成集成成像方法[J]. 光子学报, 2019, 48(9): 0911002. QIN Zhiqiang, ZHANG Wenge, JIANG Xiaoyu, YAN Xingpeng, YAN Zhiqiang. Realtime Interactive Computergenerated Integral Imaging Method Based on Ray Tracing[J]. ACTA PHOTONICA SINICA, 2019, 48(9): 0911002.

基于光线追踪的实时可交互计算生成集成成像方法

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