一种图像水印算法。利用图像的LSB在图像叠加噪声时影响很小的特点，提出一种基于LSB的图像水印算法-An image watermarking algorithm. The LSB in the image using image overlay little effect on the characteristics of the noise when the proposed LSB based Image Watermarking Algorithm

一种基于DCT的扩频水印算法，本算法通过对水印信息进行扩频，在原始载体图像的DCT域内进行水印嵌入。-DCT-based spread spectrum watermarking algorithm, the algorithm is spreading through the watermark information in the original carrier image of the DCT domain for watermark embedding.

实现对图片数字水印的添加和缩放，并且包含数字和图片水印的添加。而且增加了缩放功能。-Implementation of digital watermarking to add the picture and zoom, and includes figures and images watermark to add. And increased the zoom feature.