摘要
可伸缩视频技术以及数字水印技术是当前多媒体应用和版权保护研究中的一个热点。针对H.264SVC可伸缩视频压缩编码,提出基于DCT系数结合密钥控制的视频水印方案,加入密钥更提高了安全性。数字水印经过预处理嵌入DCT系数,基于HVS理论结合密钥选择合适的嵌入位置。水印在视频编码的同时完成嵌入,可盲检测,并利用SVC视频的空间上分辨率多层结构增大嵌入容量和鲁棒性。实验结果显示,在不可感知性和鲁棒性方面达到了不错的效果,能抵抗一些噪声和攻击。
Scalable video coding and watermarking technology is the research focus of multimedia applications and copyright protection at present.The paper proposes a video watermarking scheme based on DCT coefficients in combination with key control in light of H.264SVC scalable video compression coding,the joining of key enhances the security.After pre-processing,the watermark bits are embedded into DCT coefficients,of which the proper positions are selected on the basis of HVS theory in conjunction with keys.The watermarks are embedded while the video is coding,and the detection is blind.Moreover,the multi-layer structure of spatial resolution of SVC video is made use to enlarge the embedding capacity and strengthen the robustness.Experimental result shows that the scheme reaches good effect in both imperceptibility and robustness and is also able to resist some noises and attacks.
出处
《计算机应用与软件》
CSCD
北大核心
2012年第9期23-26,74,共5页
Computer Applications and Software
基金
国家自然科学基金项目(60703032
61073157)
