摘要
针对传统的光学彩色图像加密算法加密过程中产生的串扰噪声问题,提出一种基于菲涅耳变换(Fr T)域MGSA融合波分复用的光学图像加密算法。首先解密图像的三个通道,创建三个独立通道的纯相位函数(POFs);然后通过R、G、B三种入射平面波获得大小匹配的近似恢复图像;最后,将三个近似恢复图像组合得到重构的彩色图像。局部彩色加密和解密的仿真实验验证了本文算法的可行性,此外,创建的三个POFs和Fr T的系统参数都可用于提高安全性的密钥,提出的加密算法简单高效安全。
As problems of crosstalks noise for traditional color image encryption algorithm generated in the process,a new algorithm based on Wavelength multiplexing modified Gerchberg-Saxton algorithm( MGSA) algorithm on Fresnel transform domain is proposed. Firstly the three channels of the image are decrypted and three independent pure phase-only function channels( POFs) are created; then three approximation restore images matching the size are obtained by the R,G,B incident planes,finally an approximate recovery reconstructed color image is the combination all the three approximation restore images.. The simulations to the partial color encryption and decryption are given to validate the feasibility of the proposed algorithm. In addition,the three POFs and Fr T can be used as a key to improve the security. The entire encryption algorithm is simple and efficient and safe.
出处
《激光杂志》
北大核心
2015年第7期63-67,共5页
Laser Journal
基金
国家自然科学基金(U1204611)
河南省科技厅科技发展计划项目(134300510037)
平顶山学院青年科研基金项目(PDSU-QNJJ-2013010)
