用matlab实现的，信息隐藏--算法是dct变换。从隐藏到读出的完整实现。-Achieved using matlab, information hiding- dct transform algorithm. Read out from the hidden to the full realization.

属于信息隐藏技术，图像图像处理的Arnold变换代码及其改进代码，输入图像输出图像，简单实用，欢迎下载~-Is information hiding, image, image processing and improve the code Arnold transform code, simple and practical, are welcome to download ~

Distortionless data hiding based on integer wavelet transform (Watermark Extraction)