| 基于运动矢量的H.264信息隐藏算法 |
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| 引用本文： | 苏育挺,张新龙,张承乾,张静.基于运动矢量的H.264信息隐藏算法[J].天津大学学报(自然科学与工程技术版),2014(1):67-73. |
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| 作者姓名： | 苏育挺 张新龙 张承乾 张静 |
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| 作者单位： | 天津大学电子信息工程学院,天津300072 |
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| 基金项目： | 国家自然科学基金资助项目（61170239）;天津大学自主创新基金资助项目 |
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| 摘 要： | 提出了一种基于H.264的视频信息隐藏算法.该算法引入菱形编码,通过轻微调制运动矢量实现信息的嵌入过程.菱形编码不仅可以有效减少运动矢量修改率,同时可以提高嵌入容量.在嵌入过程为减少信息嵌入对码率和视频图像质量的影响,选择纹理复杂区域和较大运动矢量为嵌入点.实验结果表明,该算法在确保良好视频质量的条件下,可以满足大容量信息嵌入的要求,对压缩码率的影响较小.
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| 关 键 词： | 运动矢量 H.264 菱形编码 嵌入容量 信息隐藏 |
Steganography Algorithm Based on Motion Vectors of H.264 |
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| Su Yuting,Zhang Xinlong,Zhang Chengqian,Zhang Jing.Steganography Algorithm Based on Motion Vectors of H.264[J].Journal of Tianjin University(Science and Technology),2014(1):67-73. |
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| Authors: | Su Yuting Zhang Xinlong Zhang Chengqian Zhang Jing |
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| Institution: | (School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China) |
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| Abstract: | A steganography algorithm based on motion vectors of H.264 is proposed in this paper. The algorithm in-troduces the diamond coding to achieve information hiding by a slight modulation of motion vectors. The diamond coding can not only effectively reduce the modification rate of motion vectors but also improve the embedding capac-ity. In the embedding process, in order to reduce the effects of information embedding on bit rate and video image quality, regions with complex textures and larger motion vectors are selected as the embedded points. Experimental results show that the algorithm ensures good video quality and large embedding capacity, with little effects on bit rate. |
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| Keywords: | motion vectors H 264 diamond encoding embedding capacity video steganography |
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