计算机与现代化Issue(5)：98-102,126,6.DOI:10.3969/j.issn.1006-2475.2015.05.021
一种基于多尺度空间的图像水印算法
An Image Watermarking Algorithm Based on Multi-scale Space
李爱华 1王丽彬1
作者信息
- 1. 南昌大学抚州医学院，江西 抚州 344000
- 折叠
摘要
Abstract
The existing image watermarking algorithm is of good robustness when against some common image processing attacks such as Gaussian noise, median filtering and lossy compression, etc.However, the robustness of watermark is poor when against some geometric attacks such as cropping and scaling , etc.Therefore, in order to improve the robustness of watermark , an embed-ded watermarking method is proposed based on invariant feature by combining the scale invariant feature transform and visual model.In the detection scheme , the probability density function of wavelet coefficients which in mid-frequency sub-band is mod-eled by the generalized Gaussian distribution model and the watermark decision threshold is determined by using the binary hy -pothesis theory.Furthermore, the receiver operating characteristic (ROC) curve between the probability of false alarm and the probability of detection is derived .Experimental results demonstrate that the proposed method is of good robustness when against some attacks such as JPEG compression , additive white Gaussian noise , scaling, cropping and rotation etc .关键词
数字水印/不变特征/小波变换/尺度不变特征变换Key words
digital watermarking/invariant feature/wavelet transform/scale invariant feature transform分类
信息技术与安全科学引用本文复制引用
李爱华,王丽彬..一种基于多尺度空间的图像水印算法[J].计算机与现代化,2015,(5):98-102,126,6.
