Bandwidth compression of full parallax holographic stereogram using nonuniform sampling. (4th September 2015)

• Record Type: Journal Article
• Authors: Pei, Chuang; Yan, Xingpeng; Yan, Zhiqiang; Zhao, Kai; Yu, Wu; Jiang, Xiaoyu
• Is Part Of: Journal of optics. Volume 17:Number 10(2015:Oct.)
• Publication Date: 2015-09-04
• Subjects: computer holography -- holographic display -- bandwidth compression; 42.40.Jv -- 42.40.Kw; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8978/17/10/105702
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: A novel nonuniform sampling method for bandwidth compression of full parallax holographic stereograms is presented. The configuration of the holographic stereograms and the angular-frequency characteristics of the holographic element on the holographic plane are investigated. The sampling angular-frequencies are chosen for each hogel according to their spectral distribution. Sampling and decompression process for low-pass and band-pass hogels are both introduced. The decompressed hogels can reconstruct their angular spectral distributions accurately, which demonstrates that the nonuniform sampling is a lossless method. Simulation experiments are carried out to verify the proposed method. The results indicate that the method can reduce the number of samples to 46.26% of that of the traditional uniform sampling method, and the decompressed holographic stereogram can reconstruct full parallax images of a 3D object with high quality.