CAJ | 학술논문

为了减少加密系统所用模板数，简化隐藏图像对解密过程的影响，采用球面波照明研究了基于傅里叶变换全息的多图像加密隐藏方法，并进行了加密、加密图像隐藏和解密的理论分析和数值模拟，加密图像和原始图像间的相关系数趋于0，宿主图像和加密图像的叠加系数ρ＜0．3时，宿主图像和隐藏图像的相关系数趋于1，解密图像和原始图像间的相关系数趋于1。结果表明，该加密隐藏方法的加密、解密和隐藏效果良好。
위료감소가밀계통소용모판수，간화은장도상대해밀과정적영향，채용구면파조명연구료기우부리협변환전식적다도상가밀은장방법，병진행료가밀、가밀도상은장화해밀적이론분석화수치모의，가밀도상화원시도상간적상관계수추우0，숙주도상화가밀도상적첩가계수ρ＜0．3시，숙주도상화은장도상적상관계수추우1，해밀도상화원시도상간적상관계수추우1。결과표명，해가밀은장방법적가밀、해밀화은장효과량호。
To reduce the number of binary random phase mask used in an image encryption system and simplify the effect of hidden encryption images on decryption process , an optical multiple-image encryption and hiding scheme was put forward based on Fourier transform holography under spherical wave illumination .Theoretical analysis and numerical simulation of image encryption and hiding encryption image and image decryption were made .The results show that correlation coefficient between encryption image and original image approaches 0, correlation coefficient between host image and hiding encryption image approaches 1 when superposition coefficient ρbetween host image and hiding encryption image is less than 0.3, correlation coefficient between decryption image and original image approaches 1.The encryption method can obtain good encryption effect .