摘要
本文研究了基于交叠成像技术的彩色图像加密算法,利用正弦组合光栅将彩色图像编码为灰度图像,结合交叠成像技术与双随机相位加密技术对图像进行加密,从而实现彩色图像的加密.该加密系统不仅扩大了密钥的空间,提升了系统的安全性,而且具有较强的抗剪切和抗噪声能力.该加密系统实验装置简单,实用性较强.模拟的实验结果验证了该系统的有效性.
Color image encryption algorithm based on ptychography technology is researched in this paper. In order to encrypt the color image,we use sinusoidal combinational grating to encode color image into gray image,and then the gray image is encrypted by ptychography and double random phase encoding. The encryption system not only enlarges the key spaces and enhances system security,but also the resistance of shear and noise performance are strong. The encryption system is simpler and more practical. The simulation proves the validity of the encryption system.
出处
《南京师范大学学报（工程技术版）》
CAS
2016年第1期76-83,共8页
Journal of Nanjing Normal University(Engineering and Technology Edition)
基金
国家自然科学基金(61377003
61275133)
南京师范大学高层次人才科研启动项目(184080H20162)
南京师范大学青年领军人才培养项目(184080H20178)
