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- The watermark can be extracted by DCT on the audio signal embedded watermark. 提取水印时对含水印信号的音频信号也进行分段离散余弦变换;然后利用原始音频信号提取水印.
- The watermarking algorithm adopts the DCT and encryption technologies to the embedded watermark image. 该算法首先对水印图像进行离散余弦变换,再对变换后的水印图像进行加密,然后将加密后的水印图像嵌入到DCT变换后的原始图像中。
- The embedded watermark can resist time cropping, noise attack and normal audio transform algorithm. 嵌入的水印信号能够抵抗时域的切割、加噪攻击和一般的音频变换算法。
- In the scheme, the embedded watermarking images are gray images which are scrambled, thereby increasing embedded information capacity and guaranting the safety of data. 算法中采用经过置乱变换的灰度图作为水印,不仅增加了嵌入的信息量,而且提高了水印的安全性。
- Numerical experiments show that the embedded watermark is robust to signal manipulations, such as superposing noise, cropping and filtering. 对算法的测试结果表明:该水印算法具有很强的抗剪切、滤波攻击的能力,鲁棒性强。
- The experiment results show that the embedded watermark is inaudible, and has good robustness against kinds of attacks such as white noise, low-pass filtering and resampling. 实验结果证明所嵌入的水印具有很好的不可感知性,对加白噪声、低通滤波和重采样等各种攻击具有良好的鲁棒性。
- Experiments showed when typical fingerprint image was compressed to 1/4~1/20 of its original size, the embedded watermark could be exactly extracted, and fingerprint recognition rate remained almost the same after lossy compression. 实验表明典型指纹图像压缩到1/4~1/20的时候,嵌入的水印能够无损提取,指纹图像虽不能完全恢复但识别率没有明显降低。
- The experimental results show that the proposed scheme works really well, the embedded watermark is effectively robust against various image processing operations such as cropping, rotation, flipping, scaling, JPEG lossy compression, etc. 实验证明,该算法的效果良好,稳健性强,植入的水印对剪裁、旋转、翻转、比例缩放和JPEG有损压缩都具有较强的免疫力。
- Experimental results show that embedded watermark is imperceptibility and robust to many attacks,such as noise adding,re-sampling,low pass filtering,re-quantization and lossy compression and so on. 实验结果表明,嵌入的水印不仅具有很好的透明性,而且对重新采样、低通滤波、添加噪声、重新量化、有损压缩等攻击也具有很好的鲁棒性。
- Experimental results show that the algorithm has a good transparence of the embedded watermark and is robust against attacks including resampling, smoothing, noise adding and compression. 实验结果表明,该算法对嵌入的水印具有很好的透明性,对重采样、平滑、加噪声和压缩攻击具有较强的稳健性。
- Experimental results show that embedded watermark is imperceptibility and robust to many attacks, such as noise adding, re-sampling, low pass filtering and re-quantization and so on. 实验结果表明,嵌入后的水印不仅具有很好的不可感知性,而且对添加噪声、重新采样、低通滤波和重新量化等攻击也具有很好的鲁棒性。
- And then we embed watermark data by modifying distribution of each division. 然后,透过调整区间中各个像素的分布来达到藏匿浮水印的工作。
- Iterative mixing embeds watermarking are used and extracting the watermarking by blind JADE algorithm. 利用混合的方法嵌入水印,再利用盲源JADE算法提取水印。
- Because using the treble embedding watermarking algorithm, therefore it increase in robustness effectively. 由于采用三重水印嵌入算法,因而有效地提高了健壮性。
- Quantization step of each coefficient is automatically computed in terms of the JND to adaptively embed watermarking. 在量化过程中,根据人眼视觉模型可见临界误差来确定每个系数的量化步长,实现了水印的自适应嵌入。
- The experiment of embedding and attacking proves that the algorithm can guarantee the transparency and resist LSB attack.And the embedded watermark can be completely extracted. 通过嵌入水印后的图像效果和攻击实验证明,这种水印嵌入算法对心电图信号具有良好的视觉效果,可抵抗LSB攻击,鲁棒性强。
- A new watermarking technique based on HVS and error diffusion was introduced, which can embed watermarking in halftone image. 摘要介绍了一种基于HVS和误差扩散的半色调图像数字水印方法。
- I do not like to go to the movies by my self. 我不喜欢自己一个人看电影。
- I my self is going to make a sandwich. 我要亲手做个三明治。
- At last, with this technology, the maximum capacity of embedding watermark into an index image was analyzed. 最后,分析了在索引图像中用该技术嵌入水印信息的最大容量。