摘要
在深入分析图像像素灰度差分隐藏算法的基础上,提出了一种改进的自适应信息隐藏算法,它充分利用人类视觉的各种掩蔽特性,结合图像的局部特征以自适应地嵌入秘密信息,使得对原图像所做的改变具有更好的不可见性。实验结果表明,利用改进的算法进行信息隐藏易于实现,增加了图像的信息隐藏容量,提高了其鲁棒性,从而缓解了信息隐藏系统各技术指标之间存在的矛盾。
Based on the detailed analysis of digital image pixel value differencing hiding method, an improved adaptive information hiding algorithm is proposed. Taking full advantage of all kinds of masking characteristics of the human visual system and incorporating the local feature of digital image, the algorithm embeds secret information self adaptively. As a result, the changes in the cover image are more imperceptible. Experimental results show that the improved method is easy to implement, and that the more capacity of hiding information and the better robustness are achieved, and accordingly the conflict between the technical requirements for an information hiding system is alleviated.
出处
《计算机应用研究》
CSCD
北大核心
2005年第5期145-147,共3页
Application Research of Computers
基金
陕西省自然科学基金资助项目(2003F10)
