加密域图像处理综述

Image Processing in Encrypted Domain:a Comprehensive Survey

随着人们越来越关心隐私安全问题,关于加密域信号处理的研究得到了广泛关注,而往往包含大量个人隐私的图像也有必要以隐私保护的方式进行处理.回顾了近年来加密域图像处理中的各种领域,包括基本的图像处理技术,如加密域的线性变换、线性滤波和特征提取,以及进一步的图像处理应用,如安全图像隐写、安全图像检索和加密图像压缩,并且总结了这些方向的研究趋势和前景.

With the ever increasing concern of privacy security,signal processing in encrypted domain has drawn considerable attentions.Since an image often contain much personal and privacy information,it is also necessary to process images in a privacy protection manner.This article reviewed the recent advances in secure image processing in a variety of fields,including fundamental image processing techniques like linear transforms,linear filtering and feature extraction in encrypted domain and further image processing applications like secure image data hiding,secure image retrieval and encrypted image compression.The future research trends and prospects in these directions were also presented in this article.