An error detection and recovery algorithm for the transmission of digital holography over noisy channels
An error detection and recovery algorithm for the transmission of digital holography over noisy channels
复制标题
一种用于在噪声通道上传输数字全息的错误检测和恢复算法
DOI：
10.1016/j.optcom.2007.10.104
复制
发表时间：
2008
影响因子：
2.4
通讯作者：
L. Lin
中科院分区：
文献类型：
--
作者：
L. Lin
数字化使全息数据的存储和传输成为可能。然而，重建的目标图像是容易受到传输错误的噪声信道。我们提出了一种新的算法，我们认为是第一种方法来减少噪声对数字全息图损坏的传输错误。为了完成这项工作，我们利用新的相互依赖的干涉全息图和开发一个基于检测的算法来检测错误点，并确定相应的干涉全息图的最大错误。在重建过程中，传统的四步算法用于恢复无误差点。与此相反，三步算法被用来重建误差点，通过删除最大的误差全息图。该算法能够从存在严重传输误差的数字全息图中恢复出物像，且检测准确。结果表明，该算法提供了更好的重建性能比传统的四步重建算法在一个容易出错的环境。
Digitalization enables and expertise storage and transmission of holographic data. However, the reconstructed object image is vulnerable to transmission errors over the noisy channel. We present a novel algorithm of what we believe is the first approach to reduction of noise effects on digital holograms corrupted by transmission errors. To accomplish this work, we exploit new interdependencies on the interference holograms and develop a detection-based algorithm to detect error points and to identify the corresponding interference holograms with the largest errors. In the reconstruction process, the conventional four-step algorithm is used for the recovery of error-free points. In contrast, a three-step algorithm is employed to reconstruct error points by removing the largest error holograms. With accurate detection, the proposed algorithm is capable of recovering the object image from digital holograms with severe transmission errors. It is shown that the proposed algorithm provides much better reconstruction performances than the conventional four-step reconstruction algorithm in an error-prone environment.