Digital Watermarking Algorithm for Multiview Images Generated by Three-Dimensional Warping
Digital Watermarking Algorithm for Multiview Images Generated by Three-Dimensional Warping
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DOI：
10.6109/jicce.2015.13.1.062
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发表时间：
2015-03
期刊：
影响因子：
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通讯作者：
Scott Park;Bora Kim;Dong-Wook Kim;Young-ho Seo
中科院分区：
文献类型：
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作者：
Scott Park;Bora Kim;Dong-Wook Kim;Young-ho Seo
在本文中，我们提出了一种水印方法，用于保护由深度和纹理图像生成的三维（3D）内容的所有权。在通过基于深度图像的渲染选择目标区域以嵌入水印之后，参考视点图像在深度图中左右移动，直至获得最大视点变化并生成重叠区域作为标记空间。该区域被划分为四个子部分并进行扫描。在应用离散余弦变换之后，插入水印。为了提取水印，首先可以通过参考视点图像和相应的深度图像改变视点，然后再恢复到原始视点。水印嵌入和提取算法基于量化。水印图像受到JPEG压缩、模糊、锐化和椒盐噪声等方法的攻击。
In this paper, we propose a watermarking method for protecting the ownership of three-dimensional (3D) content generated from depth and texture images. After selecting the target areas to preserve the watermark by depth-image-based rendering, the reference viewpoint image is moved right and left in the depth map until the maximum viewpoint change is obtained and the overlapped region is generated for marking space. The region is divided into four subparts and scanned. After applying discrete cosine transform, the watermarks are inserted. To extract the watermark, the viewpoint can be changed by referring to the viewpoint image and the corresponding depth image initially, before returning to the original viewpoint. The watermark embedding and extracting algorithm are based on quantization. The watermarked image is attacked by the methods of JPEG compression, blurring, sharpening, and salt-pepper noise.