Digital watermark technology emerged as the times require, and is becoming a hot technology to solve this problem. 数字水印技术应运而生，并逐渐成为了解决这一问题的热点技术。
This paper presented a digital watermarking technology which applies redundant indexes of an image to carry hiding information. 摘要提出了一种利用图像的冗余索引值携带隐藏信息的数字水印技术。
