An Improved Robust Digital Image Watermarking Algorithm based on two-level DCT | |
Huijuan Guo1,2; Baoning Niu2; Ying Huang3; Hu Guan3; Fangpeng Lan2; Fei Lin1 | |
2021-11 | |
会议日期 | November 18-21, 2021 |
会议地点 | Beijing, China |
国家 | 中国 |
英文摘要 | This paper presents a novel image watermarking algorithm based on Discrete Cosine Transform (DCT). To imbed the watermark, we first divide the image into non-overlapping partition. Then, after applying DCT, named as one-level DCT, to the host images blocks, and DC coefficients of each block are extracted. Next, we perform DCT again, named as two-level DCT, on the matrix comprised of the selected DC coefficients of each image blocks. Finally, the watermark is embedded on the part of the coefficients after the two-level DCT. The host signal interference (HIS) is the persistent concern in the spread spectrum principle. This paper overcomes the drawback by substituting spread spectrum watermark (SSW) for the original values. However, in the traditional way, these original values are modified by adding with SSW. Moreover, fixed-number blocks for image segmentation plays an important role in resisting scaling attacks. Experimental results demonstrate that the proposed method is resilient to many kinds of image processing attacks and geometric distortions, such as filtering, noise adding, JPEG compression, scaling, aspect ratio change and some kinds of combined transforms. |
源文献作者 | 中国科学院自动化研究所,中国传媒大学 |
产权排序 | 2 |
内容类型 | 会议论文 |
源URL | [http://ir.ia.ac.cn/handle/173211/47520] |
专题 | 数字内容技术与服务研究中心_新媒体服务与管理技术 |
通讯作者 | Baoning Niu |
作者单位 | 1.Taiyuan Normal University 2.Taiyuan University of Technology 3.Institute of Automation, Chinese Academy of Sciences |
推荐引用方式 GB/T 7714 | Huijuan Guo,Baoning Niu,Ying Huang,et al. An Improved Robust Digital Image Watermarking Algorithm based on two-level DCT[C]. 见:. Beijing, China. November 18-21, 2021. |
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