以一幅256*256像素的图像为例, 利用MATLAB程序实现Arnold算法。对图像中的每一个像素做运算,之后就完成了一次图像遍历, 使之达到置乱加密的效果-A 256* 256 pixel image, for example, using MATLAB program implementation Arnold algorithms. Computing for each pixel in the image, after completion of an image traverse,

通过三种基本的算法，通过matlab实现图像的加密以及解密，移植性好。(Through the three basic algorithms, through MATLAB to achieve image encryption and decryption, transplantation is good.)

其使用dct的方法实现图像水印，经检测，其鲁棒性较好，原图像不可见性也较好。包含了加密解密算法，可以实现不需要原图的解密。(The use of dct method to achieve image watermarking, after testing, its robustness is better, the original image invisibility is better. Contains the encryption and decryption algorithms,