基于运动矢量的脆弱视频水印算法研究  

A fragile video watermarking algorithm based on motion vectors

作　　者：杨静 郑耿峰 YANG Jing ZHENG Geng-feng(Fujian Special Equipment Inspection and Research Institute, Fuzhou 350008, Chin)

机构地区：[1]福建省特种设备检验研究院,福建福州350008

出　　处：《电子设计工程》2017年第12期153-156,共4页Electronic Design Engineering

摘　　要：结合人类视觉特性(HVS)与H.264编解码原理,提出了一种基于运动矢量的脆弱视频水印算法。算法从I帧能量块中提取特征码,运用最小化拉格朗日函数搜索,在具有小分割模式的宏块中选择具有最佳率失真性能的运动矢量作为嵌入点。本算法简单,能够实现盲提取。实验结果表明,算法能够有效改善水印的不可见性,降低水印嵌入带来的码率提升以及对视频质量的影响,并对各类恶意攻击表现出较好的脆弱性。The paper proposes a fragile video watermarking algorithm based on motion vectors ,combind with human visual system （HVS） and H.264 codec principle. The algorithm extracts signature code from I-frame energy block,and choose the motion vector with the best rate distortion performance by minimizing the Lagrangian function as embedded-point. The extraction of the watermark does not equire the original video and the algorithm is very simple. The experimental result shows that this algorithm can improve the imperceptibility of the watermark , reduce the rate-raising and vedio-quility caused by watermarking emmbendment ,and shows strong fragility toward malicious attaacks.

关 键 词：人类视觉特性 H.264 运动矢量 不可见性 脆弱性 H.264 

分 类 号：TN98[电子电信—信息与通信工程]