说明：  该程序有matlab的GUI界面，用离散余弦变换实现了数字水印图像嵌入，并且能够从处理过的图像中提取出水印。所有的图片都经过二值化处理，这是一个黑白图像的数字水印嵌入程序。
(The program has matlab GUI interface, with the discrete cosine transform to achieve the digital watermark embedding and can be processed images from the extracted watermark. All images have been binarization processing, which is a black and white image of the digital watermark embedding process.)