Open AccessFast generation of 360-degree cylindrical photorealistic hologram using ray-optics based methods
Author(s) -
Xu Zhang,
Kefeng Tu,
Guoqiang Lv,
Zi Wang,
Qibin Feng
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.428475
Subject(s) - holography , optics , holographic display , integral imaging , parallax , spatial light modulator , pinhole (optics) , computer science , computer generated holography , fast fourier transform , fourier transform , pixel , physics , computer graphics (images) , computer vision , image (mathematics) , algorithm , quantum mechanics
Due to the large pixel pitch and limited size of spatial light modulator (SLM), the field of view (FOV) of current holographic display is greatly restricted. Cylindrical holography can effectively overcome the constraints of FOV. However, the existent algorithms of cylindrical hologram are all based on the wave-optics based approach. In this paper, to the best of our knowledge, we adopt the ray-optics based approach in the generation of cylindrical computer generated hologram (CCGH) for the first time. Information of parallax images captured from three-dimensional (3D) objects using a curved camera array is recorded into a cylindrical hologram. Two different recording specific algorithms are proposed, one is based on the Fast Fourier Transform (FFT) method, and another is based on the pinhole-type integral imaging (PII) method. The simulation results confirm that our proposed methods are able to realize a fast generation of the cylindrical photorealistic hologram.