| 包观笑,孙刘杰,刘玄玄,聂鹏,李毓彬,潘子兰.自适应尺度还原的抗旋转全息水印技术[J].光电子激光,2015,26(7):1336~1341 |
| 自适应尺度还原的抗旋转全息水印技术 |
| Anti-rotation holographic watermarking technology based on adaptive scale reduction |
| 投稿时间：2015-03-22 |
| DOI： |
| 中文关键词: 全息水印 离散余弦变换(DCT) 尺度不变特征变换(SIFT) |
| 英文关键词:holographic wartermarking discrete cosine transform (DCT) scale invariable feat ure transformation (SIFT) |
| 基金项目:上海市教委科研创新重点项目(13ZZ111)和上海市研究生教育创新计划(JWCXSL1402)资助项目 (上海理工大学 出版印刷与艺术设计学院,上海 200093) |
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| 中文摘要: |
| 针对旋转攻击与尺度变化攻击,提出一种 基于尺度不变特征变换(SIFT)的可自适应还原尺度变化的抗旋转水印。首先,将水印图像进 行离散余弦变换(DCT),与参考光生成全息水印图像；然后通 过DCT嵌入载体图像Y通道；最后在提取水印时,通过SIFT自适应 还原尺度变化,结构相似性指数(SSIM)校正旋转角度后提取水印信息。 实验表明,本算法在有效抵抗常见攻击的同时,有较强的水印数据信息保真能力,且在同样 的旋转校正精度时,有高效的 运算效率,解决了现阶段抗旋转攻击水印技术只适用于相同尺度下的角度矫正问题。水印提 取时需要原图参与,属于明水印 的一种,因此可以有效用于版权方的版权保护。 |
| 英文摘要: |
| An novel anti-rotation watermarking s cheme which can restore the scale change adaptively based on scale invariable fe ature transformation (SIFT) is proposed.At first,the watermarking image is performed by the discrete cosine transform (DCT) and the holographic watermarking image is generated with the reference light;then the Y pass age of carrier image is embedded through the discrete cosine transform.Finally,when extracting watermarking,we can restore scale change by SI FT adaptively and rotate angle by structural similarity (SSIM) after correction to extract watermarking information.Experimental results suggest that the algorithm has a good effect on efficiency against other common attacks.What is more,it has a stro ng fidelity watermarking data capacity,and can guarantee the same rotation correction precision and high-effi ciency operation.The problem of stage anti-rotation attack watermarking technology is solved which is only a vailable in angular correction at the same scale.This adaptive scale reduction o f anti-rotation holographic watermarking technology can be effectively used for protecting the copyright. |
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