西南交通大学学报（英文版）2005，Vol.13Issue(2)：130-134,5.
DWT-Based Robust Color Image Watermarking Scheme
DWT-Based Robust Color Image Watermarking Scheme
Liu Lianshan 1Li Renhou 2Gao Qi1
作者信息
- 1. School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China
- 2. College of Information Science and Engineering, Shandong University of Scienee and Technology, Qingdao 266510, China
- 折叠
摘要
Abstract
A scheme of embedding an encrypted watermark into the green component of a color image is proposed. The embedding process is implemented in the discrete wavelet transformation (DWT) domain. The original binary watermark image is firstly encrypted through scrambling technique, and then spread with two orthogonal pseudo-random sequences whose mean values are equal to zero, and finally embedded into the DWT low frequency sub-band of green components. The coefficients whose energies are larger than the others are selected to hide watermark, and the hidden watermark strength is determined by the energy ratio between the selected coefficients energies and the mean energy of the subband. The experiment results demonstrate that the proposed watermarking scheme is very robust against the attacks such as additive noise, low-pass filtering, scaling, cropping image, row ( or column ) deleting, and JPEG compression.关键词
Digital watermark/Discrete wavelet transformation/Color image/Copyright protectionKey words
Digital watermark/Discrete wavelet transformation/Color image/Copyright protection分类
信息技术与安全科学引用本文复制引用
Liu Lianshan,Li Renhou,Gao Qi..DWT-Based Robust Color Image Watermarking Scheme[J].西南交通大学学报（英文版）,2005,13(2):130-134,5.
