Double-image sharing encryption based on associated fractional Fourier transform and gyrator transform

<正>We present a novel method for realizing double-image encryption algorithm by combining the images in different transform domains.Two original images are encrypted into two interim images by fractional Fourier transform and gyrator transform,respectively.The two encrypted images can be obtained by means of the addition and subtraction of the two interim images.This is defined as a double-image sharing scheme,in which the original images are encrypted into two parts.The original images cannot be recovered only with any one of the two interim images.Numerical simulation experiments demonstrate the validity of the algorithm.     

石油企业电气设备检查与诊断方法探析

通过对目前输油电气设备运行状况的分析,提出了电气设备开展可靠性诊断和维修的可行性和检修策略。