摘要
根据数字水印的基本原理,运用小波分析方法将伪随机序列嵌入到数字图像中,并可以通过检测判定水印的存在与否,进而鉴别图像的版权真伪。在水印检测时,可以不必使用原始图像作比对来实现盲检测。该算法具有良好的隐蔽性和稳健性,从表面上无法感知水印的存在,更不可能伪造,因此提高了图像防止伪造的能力。
Based upon the principle of watermark,a encrpytion technique is adopted for watermarking image with wavelet analysis.The pseudo random sequence is inserted into the photograph of the certification's possessor,and can distinguish the certificate by extracting the watermark.And a linear correlation detector is used to detect the watermark,so that the watermark can be detected without original image.Since the arithmetic has good transparency and robustness,the certificate is very difficulty to be forged and the capabilities of counteracting the forge can be improved.
出处
《物探化探计算技术》
CAS
CSCD
2007年第5期460-464,共5页
Computing Techniques For Geophysical and Geochemical Exploration
基金
公安部重点科研项目(20029472101)
关键词
数字水印
数字图像
小波分析
watermarking
digital image
wavelet analysis
