Abstract: The paper presents a digital watermarking algorithm for JPEG2000 color image. The digit of bit operation in data pretreatment is as an embedded factor of watermarking, which adapts to different grain and color image better. The lower limited factor is introduced to the process of extraction, which improves the definition of extracted watermarking effectively. The results of the experiment show that the algorithm can withstand a lot of attacks, and has great robustness.

摘要： 提出了一种在JPEG2000彩色图像中实现的数字水印算法，将数据预处理中位运算的位数作为水印的一个嵌入因子，更好地适应了不同纹理和色彩的图像。提取时下限因子的引入，有效地提高了提取水印的清晰度。实验结果表明，该算法能抵抗多种攻击，具有较好的鲁 棒性。

关键词: 数字水印, JPEG2000, 小波变换, 位运算, Arnold变换

CLC Number: 

• TP309