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采用矢量量化技术、压缩比超过1600倍的低比特率计算机生成彩色菲涅耳全息术[特邀报告]

Low-bit-rate computer-generated color Fresnel holography with compression ratio of over 1600 times using vector quantization [Invited].

作者信息

Tsang Peter, Cheung Kayton W K, Poon Ting-Chung

机构信息

Department of Electronic Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, China.

出版信息

Appl Opt. 2011 Dec 1;50(34):H42-9. doi: 10.1364/AO.50.000H42.

Abstract

We propose a method for compressing a digital color Fresnel hologram based on vector quantization (VQ). The complex color hologram is first separated into three complex holograms, each representing one of the primary colors. Subsequently, each hologram is converted into what we call a real Fresnel hologram and compressed with VQ based on a universal codebook. Experimental evaluation reveals that our scheme is capable of attaining a compression ratio of over 1600 times and still preserving acceptable visual quality on the reconstructed images. Moreover, the decoding process is free from computation and highly resistant to noise contamination on the compressed data.

摘要

我们提出了一种基于矢量量化(VQ)的数字彩色菲涅耳全息图压缩方法。首先将复彩色全息图分离为三个复全息图,每个复全息图代表一种原色。随后,将每个全息图转换为我们所称的实菲涅耳全息图,并基于通用码本用矢量量化进行压缩。实验评估表明,我们的方案能够实现超过1600倍的压缩比,并且在重建图像上仍能保持可接受的视觉质量。此外,解码过程无需计算,并且对压缩数据上的噪声污染具有高度抗性。

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