• 通常为了提高透明性较大水印能量添加宿主图像高频部分

    Usually, to enhance transparency, greater watermark energy should be added to the high frequency part of uncorrupted image;

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  • 基于水印能量提高水印鲁棒性重要作用提出了音频水印载体可以嵌入最大水印能量估计方法

    A method of estimating the maximum of the audio watermarking is presented since watermarking power is important role to improve the watermarking robustness.

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  • 提出一个新的基于图像能量量化公开数字水印算法

    A novel public digital watermark algorithm based on image energy and quantization is proposed.

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  • 研究结果表明水印检测错误率主要取决于水印平均能量水印容量,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.

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  • 利用人耳对于音频样本整体幅度增大或减小感觉不敏感特性,通过改变音频样本的幅度调整三段音频能量相对关系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.

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  • 峰值信噪(PSNR)等基于能量度量指标应用矢量地图水印系统具有一定局限性

    Some energy based metrics, e. g. peak signal to noise ratio (PSNR), have some limitations while applied to vector map watermarking systems.

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  • 算法我们提出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.

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  • 文章分析数字音频水印同步性基础上提出了种结合音频倒频谱系数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.

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  • 基于DCT数字水印算法通过寻找特征区域水印嵌入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.

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  • 同时,对水印图像DCT系数进行调整使得各频率的能量基本相当,间接地提高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.

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  • 同时,对水印图像DCT系数进行调整使得各频率的能量基本相当,间接地提高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.

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