摘要
针对多级小波分解的复合数字水印嵌入技术,为从一个可能已经受到各种图像处理的水印图像中提取水印,提出了一种有效的复合水印提取与检测方法,可充分利用图像的能量分布特征,在高频和低频部分分别提取水印并进行检测.试验证明,该方法有效地保证水印提取的可靠性,具有较好的实用性.
In accordance with an algorithm of combining watermarking embedded into image,a method of drawing and inspecting watermarking was presented.Making use of energy＇s distribution character in image,the method separately draws and inspects watermarking in the low frequency and the high frequency section.The experimental result proves that algorithm has a good practicability and can ensure effectively the reliability of watermark drawing.
出处
《光电技术应用》
2010年第6期59-62,共4页
Electro-Optic Technology Application
关键词
复合水印
离散小波变换
combining watermarking
discrete wavelet transform
