The rest are inserted in non-LSB bits in spatial domain of the DCT-watermarked image.
非重要水印则嵌入含水印图像空域的非LSB位。
Experiments show that the watermarked image is invisible and robust to a lot of common image manipulations.
实验结果表明，算法不仅具有良好的不可见性，并且对常见的图像处理操作具有较好的鲁棒性。
The experiments with common image-processing operation on the watermarked image shows that the algorithm is quite robust.
对嵌水印图像作典型图像处理试验，表明该算法具有很好的鲁棒性。
As the image doesn't change during the process of watermark embedding, the watermarked image is same with the original image.
由于水印嵌入过程并不修改图像，所以水印图像与原始图像相同。
Watermark detection is implemented by comparing the new difference of mean values of watermarked image blocks with the threshold values.
在水印提取时，计算分块的新的均差值并与所设门限进行比较，从而检测嵌入的原始水印值。
The proposed scheme is exploiting the high sensitivity on initial value of chaotic map, can localize the tampers on the watermarked image.
利用混沌对初值极端敏感性的特点，能够定位检测对加入水印图像的窜改，并且水印提取不需要原始图像。
The experimental results have demonstrated that this algorithm can locate the tampered area as well as detecting "collage-attack" to the watermarked image.
实验结果表明，该算法不仅具有良好的定位篡改区域功能，而且能够有效地克服“拼贴攻击”。
Experimental results show that the proposed technique is robust to common digital image processing operations and the quality of the watermarked image is guaranteed.
仿真实验表明，该算法对常见的一些数字图像处理操作具有较强的鲁棒性，同时能保证含水印图像的质量。
If the position of the feature points is stored in a database or in the file head of the watermarked image, the original image is not necessary for watermark detection.
将特征点位置存放在数据库或图像文件头中，提取时无需原始图像。
The tampered area of the watermarked image could be reflected in the watermarking difference map and the tampered intensity could be reflected in singular values difference.
认证时通过水印差值定位图像被篡改的位置，通过奇异值差值反映被篡改区域的篡改强度。
It might fail to detect watermarking now that geometric attacks perform on a watermarked image and destroy the synchronization of the watermark signals embedded in the image.
几何攻击作用在加载有水印的图像上，水印同步信息被破坏，导致水印检测失败。
Because the watermark embedding and extraction processes have no loss of the information, we can extract the complete information of the Original image from the watermarked image.
由于水印的嵌入和提取过程都是无信息丢失的，所以最终能从含水印的图像中提取出完整的图像信息。
A new watermark scheme based on DCT is presented in this paper, which has following features:(1)the difference between the watermarked image and the original is perceptually invisible;
给出了一种基于DCT变换的数字水印策略，它有以下特点：（1）隐藏效果好，视觉系统无法看出与原图像的区别；
The algorithm does not apply the traditional im - age normalization technique, so it guarantees watermarked image high transparency, that is to ensure high quality of watermarked image.
该算法不是采用传统的图像归一化技术，所以保证了水印图像的高透明性，即保证了嵌入水印后的图像的高质量。
For the detection of digital watermarking from the image geometric attacked, a method estimated the type of geometric attacks from the watermarked image according to image pixel is proposed.
在数字水印技术中，针对含水印图像遭受几何攻击后的水印检测问题，提出了根据图像像素判断含水印图像遭受的几何攻击类型的方法。
The algorithm proposed in this paper can produce the watermarked image which has high fidelity at the expense of the less robust. At the same time, the orders for dual protection are realized.
该算法能得到高逼真度的加水印图像，以牺牲较少的鲁棒性为代价，较好的实现了对原始图像的双重保护功能。
Furthermore, this algorithm, adapted to the local image characteristics, can control the robustness of embedded watermark and improve visual quality of the watermarked video.
同时这种算法可以根据图像局部特征控制水印鲁棒性，改善画质。
Furthermore, this algorithm, adapted to the local image characteristics, can control the robustness of embedded watermark and improve visual quality of the watermarked video.
同时这种算法可以根据图像局部特征控制水印鲁棒性，改善画质。
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