通常,为了提高透明性,应将较大的水印能量添加到宿主图像的高频部分;
Usually, to enhance transparency, greater watermark energy should be added to the high frequency part of uncorrupted image;
基于水印能量对提高水印鲁棒性的重要作用,提出了音频水印载体可以嵌入最大水印能量的估计方法。
A method of estimating the maximum of the audio watermarking is presented since watermarking power is important role to improve the watermarking robustness.
提出了一个新的基于图像能量和量化的公开数字水印算法。
A novel public digital watermark algorithm based on image energy and quantization is proposed.
研究结果表明,水印检测错误率主要取决于水印的平均能量和水印容量,而且随着水印容量的提高而增加。
Reseatch result shows that watermark detection error is mainly influenced by the watermark mean energy and watermarking capacity. The detection error rises with the increase of watermarking capacity.
另一种利用人耳对于音频样本整体幅度增大或减小感觉不敏感的特性,通过改变三段音频样本的幅度值来调整三段音频能量的相对关系来实现秘密水印的嵌入。
The other approach is changing the three sections of the audio sample rate of the value to adjust the three sections of the audio energy in relativity to achieve a secret watermark embedding.
峰值信噪比(PSNR)等基于能量的度量指标在应用于矢量地图水印系统时具有一定的局限性。
Some energy based metrics, e. g. peak signal to noise ratio (PSNR), have some limitations while applied to vector map watermarking systems.
在该算法中,我们提出了新的局部水印嵌入能量控制方法以及新的水印检测技术——双脉冲加权水印检测技术。
To improve the robustness of the algorithm, we propose a new method to control the local watermarking strength and develop a weighting process of watermark detection.
文章在分析数字音频水印同步性的基础上提出了一种结合音频倒频谱系数和以音频能量特征决定数字水印嵌入位置的数字水印方法。
This paper gives a new method for digital audio watermarking which uses audio cepstrum domain and energy features to decide the location of embed frames.
在基于DCT的数字水印算法中通过寻找特征区域将水印嵌入在能量最大的离散余弦系数中;
Embedded the watermark information into intermediate frequency in the DCT-based watermark algorithm by seek the feature field.
同时,对水印图像的DCT系数进行调整,使得各频率的能量基本相当,间接地提高了提取的水印图像的信噪比。
At the same time, we adjust the DCT coefficients of image's watermark to make them in the same level.
同时,对水印图像的DCT系数进行调整,使得各频率的能量基本相当,间接地提高了提取的水印图像的信噪比。
At the same time, we adjust the DCT coefficients of image's watermark to make them in the same level.
应用推荐