基于振幅相减的二值光学图像加密

Binary optical image encryption using abstracting

根据实振幅二值图像的特点,提出了一种新的加密方法,待加密的二值图像与一个随机二值实振幅掩模进行相减后,取其光强分布作为加密图像。加密图像和随机二值实振幅掩模相减,相减后的光强分布可以重建原图像。该方法的光学系统简单,容易实现,而且加密图像是一个实值,便于计算机打印或显示输出。

In connectioo with the characteristic of binary image, a new encryption method is proposed in this paper. In this method, the intensity of image obtained by subtracting key codes from image to be encrypted is recorded as the encrypted date. The image to be encrypted can be reconstructed by subtracted key codes from the encrypted date. Computer simulation indicated the feasibility of the proposed method.