| 零视差点重组在三维图像数字水印中的应用 |
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| 引用本文： | 田敏,刘琚,万文博,刘永康,王锋.零视差点重组在三维图像数字水印中的应用[J].信号处理,2013,29(12):1684-1688. |
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| 作者姓名： | 田敏 刘琚 万文博 刘永康 王锋 |
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| 作者单位： | 山东大学信息科学与工程学院 |
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| 基金项目： | 山东省信息产业专项发展资金项目（2011R0116）；山东大学研究生自主创新基金项目（yzc12113） |
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| 摘 要： | 在基于深度图像渲染（DIBR）水印方案中，利用深度图像和中央彩色图像通过像素平移渲染出左眼视图和右眼视图，嵌入到中央图像的水印信息会受到严重破坏，无法在左眼视图和右眼视图中正确提取水印信息。本文提出一种DIBR中零视差点的三维图像数字水印方法，利用深度值确定视差值，标定视差为零的点，重新组合成新的载体图像，进行水印嵌入。由于视差为零的像素点在生成左右眼视图时没有发生水平移动，所以此方法克服了DIBR过程中的像素平移带来的攻击。实验证明此方法能得到和二维水印一致的效果并且对于高斯噪声和JPEG压缩都具有良好的鲁棒性。
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| 关 键 词： | 数字水印 深度图像渲染 零视差点 图像重组 扩展变换抖动调制 |
| 收稿时间： | 2013-05-27 |
Zero-Parallax-Pixel Reconstruction Used in 3D Image Digital Watermarking |
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| Affiliation: | School of Information Science and Engineering, Shandong University |
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| Abstract: | In the watermarking schemes based on depth-image-based rendering(DIBR), the left-eye image and the right-eye image are rendered from the center image by shifting the pixels horizontally. The watermark embedded in the center image may be terrible disturbed, thus the watermark can not be detected correctly from the left-eye or right-eye image. This article proposes a 3D watermarking method based on Zero-Parallax-Pixel, which reconstructs the pixels with zero parallax based on the depth image as the domain to embed the watermark. As the Zero-Parallax-Pixel does not change during the shifting, the proposed scheme can resist the attack of DIBR. Experiments show that the proposed scheme gains the same performance as the 2D image watermarking and is robust to the noise adding attacks. |
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