由于电信产品的不可感知性和复杂性。
Because the telecommunication product can't the feeling sense and complexity.
实验证明了该技术的鲁棒性和不可感知性。
Experimental results demonstrate that the technique is robust and imperceptible.
本文对上述两种算法均进行大量不可感知性和鲁棒性实验。
There are a lot of imperceptible and robust experiments for both the two kinds of better algorithm.
通过实验对比，改进算法在增强隐藏信息的不可感知性上有一定提高。
Through comparing the experimental results, the imperceptibility of the embedded information has been improved to some extent.
实验结果表明该算法具有较强的鲁棒性和不可感知性，可以抵御各种常见的攻击。
The experimental results show that the algorithm not only has strong robustness and good imperceptibility but also can resist all kinds of common attacks.
为了满足鲁棒性和不可感知性之间的平衡，使用人类视觉模型自适应地调节水印的嵌入强度。
To satisfy the balance between the robustness and the imperceptivity, the HVS model is used to adaptively adjust the watermark embedding strength.
为了平衡鲁棒性和不可感知性，新的适用于3维的人类视觉模型被重构并用于调整水印的嵌入强度。
To make the compromise between the robustness and the imperceptivity, a new 3-d HVS model is reconstructed and used to adjust the embedding strength.
事实上，这类算法不仅能更好地抵抗各种信号处理操作，而且还保持对人类感观系统的不可感知性。
In fact, these kinds of algorithms are not only robust to various kinds of signal processing but also remain imperceptible to human sensory system.
最后，本文从差异性定义出发，通过空间分析操作，判断面向GIS矢量数据水印系统的不可感知性。
Finally, according to the definition of difference, this article judges the imperceptibility of watermark algorithm for the GIS vector data through the operation of spatial analysis.
并且矩阵编码有助于减小对原始音频的修改比例，进而减小嵌入数据对原始音频载体不可感知性的影响。
And the matrix coding help to reduce the proportion of the original audio changes, thereby reducing the effects of the original audio carrier 'imperceptibility when embeded datas.
实验表明，该算法具有很好的鲁棒性和不可感知性，能够抵抗帧删除等同步攻击以及基于视频内容的攻击；
The experimental results demonstrate the algorithm has great robustness and unperceptiveness and can efficiently against temporal synchronization attacks and content-based attacks.
为了达到隐藏后信号良好的听觉不可感知性，引入了音频编码理论中广泛使用的听觉模型用于音频数据隐藏研究。
To achieve fine imperceptible characteristic, the audio model in widely used audio coding theory is introduced into the audio data hiding research.
实验表明，该方法简单、高效、安全性能好，且具有较好的不可感知性，对通常的图像处理及JPEG压缩等具有极好的稳健性。
Experimental results show that the proposed technique has good efficiency, security, imperceptibility, highly good robustness to common image processing operation and the JPEG lossy compression.
实验结果表明，该算法具有较好的不可感知性，可以有效抵抗线性拉伸攻击，并且对于剪切、旋转、噪声，滤波等攻击都具有较强的鲁棒性。
The results of experiment proved that this algorithm is invisible, can efficiently against linear stretching attack, and has better robustness to crop, rotation, noise or filter attack.
应用扩频原理，能大大改善水印嵌入的不可感知性。但由于采用扩频调制后，一个水印信息要用一个周期的伪随机序列调制，因此会增加嵌入的水印量。
Equally, spreading spectrum technology can improve the performance of watermark technology greatly, but it will increase the capacity of channel and the calculation of the algorithm as cost.
应用扩频原理，能大大改善水印嵌入的不可感知性。但由于采用扩频调制后，一个水印信息要用一个周期的伪随机序列调制，因此会增加嵌入的水印量。
Equally, spreading spectrum technology can improve the performance of watermark technology greatly, but it will increase the capacity of channel and the calculation of the algorithm as cost.
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