融合压缩感知的图像加密技术研究

项目名称： 融合压缩感知的图像加密技术研究

项目编号： No.61502399

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 自动化技术、计算机技术

项目作者： 张玉书

作者单位： 西南大学

项目金额： 21万元

中文摘要： 目前，图像加密研究领域的两大主流，混沌图像加密和光学图像加密，发展动态均略显沉寂。压缩感知理论的出现，以及其安全特性愈来愈热的研究,为图像加密技术的研究注入了新的发展活力。本项目旨在对融合压缩感知的图像加密技术进行系统地研究，研究内容有：（1）在图像轻度加密的基础上，充分挖掘出一些适配的压缩感知技术进行采样，实现密文图像的鲁棒编码；（2）在不影响压缩感知采样性能的前提下，将混沌密码学特性融入其中后再作用于图像，实现图像的同时采样、压缩和加密；（3）借助混沌理论或光学技术，对压缩感知采样图像产生的测量值设计适合的加密算法，实现测量值的安全保障；（4）后两个内容进一步缝合实现压缩感知采样图像时的双重加密,从而在图像的应用背景下，实现了压缩感知、混沌理论和光学技术的有机融合。本项目将拓宽压缩感知技术的应用范围，为混沌图像加密和光学图像加密提供新的技术支持，促进图像加密技术研究的更进一步发展。

中文关键词： 压缩感知；图像加密；混沌理论；光学技术

英文摘要： So far, the two major branches in image encryption research include chaotic image encryption and optical image encryption, and both their development trends have become slow. However, the appearance of compressive sensing theory, and the hotter and hotter security study for compressive sensing, revives their development for new vitality. This project investigates the integration technique of image encryption based on compressive sensing. Specifically, (1) after performing lightweight image encryption, some appropriate compressive sensing techniques are fully excavated and then used for sampling, which realizes the robust coding of encrypted image; (2) under the precondition of not affecting the sampling performance of compressive sensing, some chaotic cryptographic features are embedded in compressive sensing and then used for sampling, which realizes simultaneous image sampling, compression and encryption; (3) some appropriate encryption algorithms are designed for the measurement values generated by compressive sensing by utilizing chaos theory or optical technology, which realizes the security guarantee for compressive sensing measurements; (4) the latter two aspects can be further combined，which realizes dual encryption for image compressive sensing, i.e., which achieves an organic integration of compressive sensing, chaotic theory and optical technique under the application background of image. This project will broaden the application sphere of compressive sensing, provide the new technical support for chaotic image encryption and optical image encryption, and promote the further development of image encryption research.

英文关键词： Compressive sensing;Image encryption;Chaos theory;Optical technique