摘要
针对因特网上数字图像的版权保护、认证和完整性等问题,基于DCT变换、image moment normalization和m序列,提出了一种二值水印嵌入算法,实现了二值图像的嵌入和提取。根据m序列的伪随机性和抗干扰性能,使水印具有良好的隐蔽性和稳健性;使用了moment normalization能抵制各种几何攻击。实验表明该算法具有很好的鲁棒性、实用性和可操作性。
Aiming at these problems of digital image on the Intemet,including copyright protection, authentication and integrity,proposes a binary watermark embedding algorithm based on m- sequence,moment normalization and DCT,which achieves the embedding and extracting of a binary image. Based on the strongly confidential and anti -jamming characteristics of m - sequence spread spectrum technology, the algorithm has strong rohustness; moreover, regarding resistance to geometrical attacks,use moment normalization mechanisms to recover geometrica/distortion. Experiment results show that the algorithm has good robustness,practicability and maneuverability.
出处
《计算机技术与发展》
2008年第5期153-155,167,共4页
Computer Technology and Development
基金
国家自然科学基金资助项目(10571052)
