数字图像处理中的可逆水印算法，基于差值扩展而得，其容量与其图像像素有关。(The reversible watermarking algorithm in digital image processing is based on the spread of the difference, and its capacity is related to the pixel of the image.)

差值扩展简单嵌入算法，属于图像隐写算法的一种。(The differential extension simple embedding algorithm is one of the image steganography algorithms.)

这是差值扩展算法的信息提取源码，里面还有一个word说明。(This is the information extraction source of the differential expansion algorithm, and there is a word descr iption in it.)