【作者】 袁开国； 张茹； 钮心忻； 杨义先；

【Author】 Yuan Kaiguo,Zhang Ru,Niu Xinxin,and Yang Yixian (Information Security Center,State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Telecommunications,Beijing 100876)

【机构】 北京邮电大学网络与交换技术国家重点实验室信息安全中心；

【摘要】 为了能够解决在MPEG-4码流中实现大容量信息隐藏这一难题,经过对MPEG-4标准的深入研究,提出了一种基于MPEG-4纹理编码原理的信息隐藏算法,通过对位于视频VOP边缘上的DCT编码块中不在VOP内的像素的YUV值进行填充,实现了信息在VOP运动纹理信息中的隐藏.实验表明,算法具有很好的透明性,同时隐藏容量也很可观.随着MPEG-4标准应用的日益广泛,算法在对MPEG-4视频流进行大容量信息隐藏的场合将有着很好的应用前景.更多还原

【Abstract】 In order to resolve the problem of hiding a mass of information in MPEG-4 video streams, after the research of MPEG-4 standard,an algorithm based on MPEG-4 texture coding is presented. The data is hidden in the texture of the VOP,through replacing the YUV values of the pixels which are in the DCT block of the VOP,but outside of the VOP.Experiments show that the invisibility of the algorithm is very well,while hiding capacity is impressive.With the MPEG-4 video becoming more widely available,the algorithm will have good prospects in occasions in which vast data is hidden.更多还原