查询词典 watermark

In order to track the use of image, user's ID is used as watermark.

该算法将用户ID作为水印信息，从而实现对图像的操作跟踪。

Experimental results demonstrate that our scheme is effective and useful, guaranteeing the inaudibility and robustness of the watermark.

实验结果表明，本方法保证了水印的不可感知性以及鲁棒性，且简单易行，因此具有较高的实用价值。

Aiming at the problem which is the robustness and inaudibility of the digital audio watermark is limited for each other, so an optimization watermarking method based on Genetic Algorithm which to compute the best energy quickly is proposed in this paper.

2针对数字音频水印的鲁棒性和不可感知性两者之间是相互制约问题，提出一种采用遗传算法(Genetic Algorithms，GA)来解决最优嵌入能量的优化水印方案。

So, a novel machine learning based digital blind audio watermarking scheme in the wavelet domain is proposed in this paper, which could find a reasonable balance between the robustness and inaudibility of the watermark, then have the better robustness and inaudibility.

本文正是将小波变换应用到音频信号的数字水印系统中，提出一种小波域上基于机器学习方法的新的数字音频盲水印算法，使其能在水印的鲁棒性和不可感知性之间寻找到合理的平衡点，从而具有更良好透明性和鲁棒性，并在音频作品的版权保护中能有一定的实用性。

Thefrequency analysis of the psychoacoustic model can give the inaudible, redundanelements of audio. In this paPer we employ it to gUarantee the inaudibility of theembedded watermark.

心理声学模型的时频域分析主要用于音频数据的压缩编码，这里主要考虑将其用于音频水印算法中去，以便从理论的角度来考虑嵌入水印的不可感知性。

Because the genetic algorithms could search the optimization of objective function randomly, which via the evolution of groups, our work is based on the embedding/detecting way of "DWT-Based Audio Watermarking Using Support Vector Regression and Subsampling". And this method provides a preliminary discussion on the application of GA, which searching the individual with the highest fitness of attack-resistance in the aggregate of the optimal embedding strength. As an optimization solution of obtaining the optimal embedding strength, it could achieve an adaptive policy, and find a reasonable balance between the robustness and inaudibility of the watermark, just for the better robustness and inaudibility in the algorithm.

遗传算法是通过群体进化来随机搜索目标函数的最优化问题，对于前述基于支持向量回归机的小波域数字音频盲水印算法，进一步地探讨采用遗传算在嵌入强度集合中搜索对抗攻击能力适应度较高的个体，从而得到最佳嵌入强度的一个优化方案，以实现自适应策略，也使本算法能在水印的鲁棒性和不可感知性之间寻找到合理的平衡点，从而具有更良好透明性和鲁棒性。

Covariance is used to detect watermark, which may reduce the influence of initial data or chaos in partially.

在水印检测中使用协方差方法，尽可能地减小了原数据或噪声对水印检测的影响。

Abstracting the edge information of the picture first, carry on coefficient to revise to it; The coefficient characteristic after varying according to the small wave, there is the intensity of imbedding the watermark of adjustment that is chosen, make the robust getting excellent and inobservance raise.

先提取图像的边缘信息，对其进行系数修正；又根据小波变换后的系数特性，有选择的调整嵌入水印的强度，使鲁棒性和不可见性都得到了提高。

By analyzing the relationship between DCT coefficients of a specific intermediate frequency, the blind watermark extraction was achieved.

通过分析DCT中频特定系数关系，实现水印的盲提取。

Two sine signals with inverse phase are used to modulate watermark bits.

利用同频率的正弦信号相位提取水印。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。