Rapid hologram generation through backward ray tracing and adaptive-resolution wavefront recording plane  

作　　者：Jianying Zhu Yong Bi Minyuan Sun Weinan Gao 朱建英;毕勇;孙敏远;高伟男(Applied Laser Research Center,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]Applied Laser Research Center,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China [2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Physics B》2024年第11期291-295,共5页中国物理B（英文版）

基　　金：Project supported by the Special Project of Central Government Guiding Local Science and Technology Development in Beijing 2020(Grant No.Z201100004320006).

摘　　要：An advanced method for rapidly computing holograms of large three-dimensional(3D)objects combines backward ray tracing with adaptive resolution wavefront recording plane(WRP)and adaptive angular spectrum propagation.In the initial phase,a WRP with adjustable resolution and sampling interval based on the object’s size is defined to capture detailed information from large 3D objects.The second phase employs an adaptive angular spectrum method(ASM)to efficiently compute the propagation from the large-sized WRP to the small-sized computer-generated hologram(CGH).The computation process is accelerated using CUDA and OptiX.Optical experiments confirm that the algorithm can generate high-quality holograms with shadow and occlusion effects at a resolution of 1024×1024 in 29 ms.

关 键 词：computer-generated hologram(CGH) wavefront recording plane(WRP) backward ray tracing 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]