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| 基于帧间中频能量关系的自适应视频水印算法 |
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杨列森1,2, 郭宗明1,2
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1.北京大学,计算机科学技术研究所,北京,100871;2.北京大学,文字信息处理技术国家重点实验室,北京,100871
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| 摘要: |
| 通过分析发现了视频帧间中频能量关系对于光度失真和空间同步失真的近似不变性.基于这种近似不变性,提出了一种可以根据人类的视觉系统特性,自适应地调整嵌入强度的鲁棒视频水印算法.实验表明,该算法可以有效抵抗光度失真、空间同步失真及其组合失真. |
| 关键词: 近似不变性 自适应视频水印 鲁棒 光度失真 空间同步失真 几何失真 |
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| 基金项目:Supported by the National High-Tech Research and Development Plan of China under Grant No.20060101Z3006 (国家高技术研究发展计划(863)); the National Key Technology R&D Program of China under Grant No.2006BAH02A10 (国家科技支撑计划课题) |
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| An Adaptive Video Watermarking Scheme Based on the Middle-Frequency Energy Relationship Between Adjacent Frames |
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YANG Lie-Sen,GUO Zong-Ming
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| Abstract: |
| The approximate invariance of the middle frequencies energy relationship between video adjacent frames under photometric distortion and spatial desynchronization is discovered by analysis.Based on this approximate invariance,a new robust video watermarking scheme is proposed.It can adjust embedding strength adaptively according to human visual system features.Experimental results show that the proposed scheme is resilient to photometric distortion,spatial desynchronization and combined distortion effectively. |
| Key words: approximate invariance adaptive video watermarking robust photometric distortion spatial desynchronization geometric distortion |
