A Robust Watermarking Scheme based on Dual Quantization of Wavelet Significant Difference
文献类型：会议论文
| 作者 | Bin Ma; Yunhong Wang; Chunlei Li; Zhaoxiang Zhang ; Di Huang
|
| 出版日期 | 2012-12-04 |
| 会议日期 | 4-6 December 2012 |
| 会议地点 | Singapore, Singapore |
| 关键词 | Biometric Authentication Digital Watermarking Dwt Qim |
| 英文摘要 | This paper proposes a blind robust watermarking algorithm based on the quantization of significant DWT coefficients. Low frequent wavelet coefficients of the host image are randomly permutated into sub-groups firstly. To guarantee watermark robustness while preserving good fidelity, watermarking modifications are distributed on the maximum positive and minimum negative coefficients of each group which preserve the most significant local amplitudes. The difference between two largest positive (or smallest negative) coefficients is quantized to an even or odd multiple of a quantization step parameter Q according to the watermark bit to be embedded. The blind watermark extraction could be straightforwardly achieved by checking the parity of the quotient between significant differences and Q. Comparison experiments with existing methods demonstrate the superiority of our scheme on robustness against content-preserving operations and incidental distortions such as JPEG compression, Gaussian noise. |
| 会议录 | PCM 2012
 |
| 源URL | [http://ir.ia.ac.cn/handle/173211/13291]  |
| 专题 | 自动化研究所_智能感知与计算研究中心 |
| 通讯作者 | Zhaoxiang Zhang |
| 推荐引用方式 GB/T 7714 | Bin Ma,Yunhong Wang,Chunlei Li,et al. A Robust Watermarking Scheme based on Dual Quantization of Wavelet Significant Difference[C]. 见:. Singapore, Singapore. 4-6 December 2012. |
入库方式： OAI收割
来源：自动化研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。