Message embedding algorithm is the important factor for the performance of information hiding system 密信信号隐藏算法关系到信息隐藏系统许多重要设计目标的实现。
( 3 ) presenting digital watermarking embedding algorithm based on quantization in low - frequency in dwt domain ( 3 )提出了基于量化音频小波域低频系数的水印嵌入算法。
According to zero - watermarking , a zero - embedding algorithm for multiple watermarks was proposed based on wavelet and chaos 摘要根据零水印概念,提出一种基于小波和混沌的多重水印零嵌入算法。
Experiments show that choosing frequency domain to embed watermarking can gain image fidelity better and have more robustness than watermarking embedded algorithm in space domain 实验证明选择频域嵌入水印可以获得更好的图像保真度并且比在空域中的水印嵌入算法更稳健。
In this article , a algorithm ccn ( calculate crossing number ) is put forward to study the crossing number . it is a very important development in graph planarity issue after planarity - determinant algorithm and embedding algorithm 本文首次给出了较好的计算图的交叉数算法ccn ( calculatecrossingnumber ) ,这是继图平面性判定算法,二连通图的平面嵌入算法之后在图的平面性问题上的一个最重要的进展。
In order to improve the robustness of digital watermarking for copyright protection , a novel position and method complementary embedding algorithm is proposed , which is based on the analysis of the unbalanced characteristics for different image processing methods 摘要为提高用于版权保护的数字水印的鲁棒性,基于图像小波信号分析方法,分析了各种处理攻击对图像小波系数影响的不均衡特性,并根据该特性提出嵌入位置和嵌入方法互补的新颖水印算法。
To the common requirement of invisibility of the two , the paper presents a information hiding strategy which first uses cluster analysis methods ( this paper uses k - means algorithm ) to classify the image to get the nature of the image , and then uses one embedding algorithm , accounting the improvement on the conceal effect using image ' s character 接着对信息隐藏技术的两个重要分支隐写术与数字水印技术,阐述其各自特点及异同点,针对二者在不可见性上的共同要求,从利于图像自身的特性增强掩密效果的思路出发,提出先用聚类分析的方法(本文采用了k -均值算法)对图像的像素点进行分类以充分发掘图像自然的内在特性,再结合嵌入算法的信息隐藏策略。
When recovering watermark information , only part content of the database is needed . the experiments results show that the safety and robustness are improved . even if the attacker knows the embedded algorithm , only the shared watermark information can be got , and the original watermark can ’ t be recovered 本文提出了基于中国剩余定理的数据库水印算法,实现了基于数据库的部分内容恢复水印信息,攻击者即使知道水印嵌入算法,也只能提取出经过分存后的水印信息,无法恢复出原始水印。
A new type of blind watermarking technology , which has the advantage of adopting watermarking embedding algorithm is introduced based on wavelet transform and cosine transform , so the original image isn ' t necessary when picking up watermarking and the transparency and robustness of digital watermarking system is well fulfilled , the attack in the forms of noise , median filtering and compress can be withstood , and high pass filtering and low pass filtering can also be endured 摘要详细介绍了基于一种新型的基于小波变换和余弦变换的盲水印数字水印技术,这种方法的一个显著的优点就是采用水印嵌入算法,提取水印的时候不需要原图象,能够很好的满足了数字水印系统的透明性和鲁棒性,能够经受住加入噪声、中值滤波、压缩等方式的攻击,并且还能够经受住高通滤波和低通滤波。
In order to ensure the security and integrity of the authenticated user ' s fingerprint data transmitted via web and increasing the credibility of the automatic fingerprint identification system ( afis ) , an adaptive embedding algorithm is introduced that can hide the fingerprint minutiae data in a synthetic fingerprint image 摘要为了保证指纹信息在网络上传输的安全性和完整性,基于小波变换多尺度分解原理以及人眼对频率、纹理和对比度的视觉特性,提出新的临界可见误差模型。