查询词典 watermark

The watermark can be detected with zero error probability even if the quality of watermarked image is as poor as 26 dB in PSNR after corrupted by additive Gaussian noise.

传统的加密系统在数据传输过程中虽有保护作用，但数据一旦被接收并解密，其保护作用也随着消失。因此只能满足有限的要求[1，2 ] 。作为数字媒体版权保护的有效手段[3 ，4 ] ，数

The elliptical watermark is embedded additively in the spatial domain. The experimental results illustrate that the proposed scheme can resist kinds of geometric attacks.

实验结果表明该算法能有效抵御包括全局几何攻击和局部几何攻击在内的多类攻击。

Amarantine may have paled in comparison to Watermark or Shepherd Moons, but its under-produced (in Enya-world) balladry was a small leap forward for the reclusive Irish superstar.

专辑介绍：经过两年的努力《冰雪的歌谣》在位于都柏林附近的 Aigle 录音室完成制作，诚然又是恩雅这个有着长期合作关系的富于非凡创造力的小组之又一个心血结晶。

Plentiful emulation experiments show that the algorithm ensures the watermark's imperceptibility and robustness, and is also robust to familiar image processing such as JPEG compression , noise contamination, cropping, zoom and circumrotate etc.

通过大量的仿真实验，证明本文算法在保证水印不可见性的同时，对常见的图像处理，如JPEG压缩、噪声、剪切、缩放以及滤波等，均具有较好的鲁棒性。

It is experimently proved that our blind watermark algorithm based on BSS is satisfying.

实验证明，这种基于盲信号分离的盲水印算法效果令人满意。

The second method makesfull use of HVS, and is in favor of invisibility and fragileness of the watermark.

这就充分利用了图像中高频信息本身的特点和人的视觉特性，有利于水印的不可见性和易损性。

This thesis proposes a lossless digital watermarking algorithm based on Harr wavelet transform, which can recover the original image without any distortion from the marked image after the watermark has been extracted.

提出了基于Harr小波的彩色图像可逆水印算法，采取闭环控制自适应地修改其高频子带系数以嵌入水印。

Considering the requirement of watermarks robustness and imperception, we present a method which can definite the intensity of the image embedded by digital watermark by the content of image.

兼顾数字水印的稳健性和不可见性要求，提出一种根据图像内容确定嵌入数字水印图像强度的方法。

Computer simulations show that the embedded watermark is imperceptive.

仿真结果也证明了这一点。

The watermark information which is generated by subsidiary secret keys of binary sequence can prove copyright of composer intuitionally.

提取水印信息的时候，无需原始音频信号的辅助，首先提取出子密钥水印图像，再与先前的子密钥叠加恢复水印。

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。