应用于相移数字全息术的干涉图样压缩。

Compression of interference patterns with application to phase-shifting digital holography.

作者信息

Darakis Emmanouil, Soraghan John J

机构信息

Institute for Communications and Signal Processing, Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow, UK.

出版信息

Appl Opt. 2006 Apr 10;45(11):2437-43. doi: 10.1364/ao.45.002437.

DOI:10.1364/ao.45.002437

PMID:16623240

Abstract

A compression method of phase-shifting digital holographic data is presented. Three interference patterns are recorded, and holographic information is extracted from them by phase-shifting interferometry. The scheme uses standard baseline Joint Photographic Experts Group (JPEG) or standard JPEG-2000 image compression techniques on the recorded interference patterns to reduce the amount of data to be stored. High compression rates are achieved for good reconstructed object image quality. The utility of the proposed method is experimentally verified with real holographic data. Results for compression rates using JPEG-2000 and JPEG of approximately 27 and 20, respectively, for a normalized root-mean-square error of approximately 0.7 are demonstrated.

摘要

提出了一种相移数字全息数据的压缩方法。记录三个干涉图样，并通过相移干涉术从中提取全息信息。该方案对记录的干涉图样使用标准基线联合图像专家组（JPEG）或标准JPEG-2000图像压缩技术，以减少要存储的数据量。在重建物体图像质量良好的情况下实现了高压缩率。所提方法的实用性通过实际全息数据进行了实验验证。结果表明，对于约0.7的归一化均方根误差，使用JPEG-2000和JPEG的压缩率分别约为27和20。