摘要
研究了小波变换域在低频子带嵌入数字水印的效果、水印嵌入因子对宿主图像质量和提取水印图像质量的影响,研究表明：存在嵌入因子阈值T,在嵌入因子小于T时提取的水印图像有较好的质量,是一种非常有效的数字水印算法.
The effects of embedding watermarks in low frequency sub-band of wavelet domain are researched, and the influences of the watermark embedding factor on the image quality of host image and extracted watermark image are also researched. The research brings out the existence of thresholds of embedding factor, while values of the embedding factor that are less than the thresholds brings better quality of the extracted watermark image. Among various digital watermarking algorithms ,the results indicate that the approach is a very effective one.
出处
《北华大学学报（自然科学版）》
CAS
2009年第6期557-560,共4页
Journal of Beihua University（Natural Science）
基金
国家自然科学基金资助项目(60672156)
吉林省科技支撑计划重点资助项目(20080320)
关键词
ICA
DWT
嵌入因子阈值
数字水印
ICA
DWT
Thresholds of embedding factor
Digital watermarking
作者简介
解成俊（1962-），男，教授，工学博士，硕士生导师，主要从事计算机应用技术研究．
