Semi-fragile Image Watermarking Algorithm Based on Visual Features
In order to identify the copyright of digital media and improve the invisibility and robustness of semi-fragile watermarking, this paper presents characteristic parameters and its representation in DWT domain based on visual features model of man and then proposes the Quantized Central Limit Theorem which is applied to adjusting the coefficient in general transform domain. These all can make semi-fragile watermarking embedded during the process of dynamic quantization achieve the greatest robustness. It leads up to the fact that the good invisibility of carrier image, the better robustness to the image processing (such as JPEG compression,noise adding, smoothing filtering) and the larger amount of embedded information. Whats more, it can locate the attacked position exactly.
zero-watermarking filter bank haar wavelet,two dimensional discrete wavelet transform
CHE Shengbing HUANG Da HUANG Qiangbo
College of computer science Central South University of Forestry & Technology Hunan Changsha 410004, China
国际会议
武汉
英文
645-651
2007-07-25（万方平台首次上网日期，不代表论文的发表时间）