Optical image compression and encryption methods
Optical image compression and encryption methods
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DOI：
10.1364/aop.1.000589
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发表时间：
2009-11-01
影响因子：
27.1
通讯作者：
Brosseau, C.
中科院分区：
文献类型：
--
作者：
Alfalou, A.;Brosseau, C.
多年来，人们对相干光学方法在实时通信和图像传输中的应用进行了广泛的研究。当需要处理大量信息时尤其如此，例如。例如，在高分辨率成像中。数据处理网络和通信系统的最新进展大大提高了信息交换的能力。然而，传输的数据可能会被未经授权的人拦截。这解释了为什么目前在数据加密和安全传输方面投入了大量精力。此外，总体信息中只有一小部分对许多应用程序真正有用。因此，当考虑到传输比特率时，应用程序可以容忍需要重要处理的信息压缩。为了实现高效、安全的信息交换，通常需要减少传输的信息量。在此背景下，利用相干光学滤波原理进行了大量工作来选择相关信息并对其进行加密。压缩和加密操作通常是分开进行的，尽管它们密切相关并且可以相互影响。描述了基于滤波的光学处理方法，其适用于传输和/或数据存储。最后讨论了一套光学压缩和加密方法的优点和局限性。 (C) 2009 美国光学学会
Over the years extensive studies have been carried out to apply coherent optics methods in real-time communications and image transmission. This is especially true when a large amount of information needs to be processed, e. g., in high-resolution imaging. The recent progress in data-processing networks and communication systems has considerably increased the capacity of information exchange. However, the transmitted data can be intercepted by nonauthorized people. This explains why considerable effort is being devoted at the current time to data encryption and secure transmission. In addition, only a small part of the overall information is really useful for many applications. Consequently, applications can tolerate information compression that requires important processing when the transmission bit rate is taken into account. To enable efficient and secure information exchange, it is often necessary to reduce the amount of transmitted information. In this context, much work has been undertaken using the principle of coherent optics filtering for selecting relevant information and encrypting it. Compression and encryption operations are often carried out separately, although they are strongly related and can influence each other. Optical processing methodologies, based on filtering, are described that are applicable to transmission and/or data storage. Finally, the advantages and limitations of a set of optical compression and encryption methods are discussed. (C) 2009 Optical Society of America