| 1. | ( 3 ) the embedded watermark can be extracted only by using a secret key
( 3 )采用密钥以加强水印的秘密性。 |
| 2. | The algorithm in spatial domain is single , and the embedding watermark ’ s capacity is large
空域水印算法简单,水印容量大,但水印鲁棒性弱。 |
| 3. | Two image watermarking methods embed watermarks into transform domain using the multi - scale characteristic of wavelet
两种图像方法都是利用小波多尺度的特征在变换域嵌入水印。 |
| 4. | Experimental results show that the embedded watermark is robust against various signal processing and compression attacks
实验证明经过信号处理与压缩后，水印仍然可以被检测出来。 |
| 5. | When embedding watermark it archived the purpose of self - adaptation control on watermark imbed quantity according to different coefficients
从而在嵌入水印时,达到对不同的系数所在块进行自适应地控制水印嵌入量的目的。 |
| 6. | Through embedding watermark information into audio carrier , the function of copy restriction , use track and the pirate confirmation can be realized
通过在音频载体中嵌入水印信息，可以实现拷贝限制、使用跟踪、盗用确认等功能。 |
| 7. | In recent year , with the development of relational database , the digital watermark technology for databases , which embeds watermark in relational database , has become popular
近年来,随着关系数据库广泛使用,又兴起了在关系数据库中嵌入水印信息的数据库水印技术。 |
| 8. | Theoretical analysis indicates that error probability of detector is independent of image itself , but only relies on the length of embedding watermarks and embedding strength factor
理论分析表明：检测器的误检测概率与图像本身无关，只取决于嵌入水印长度和嵌入强度因子。 |
| 9. | Experimental results show that embedded watermark has a certain capacity and robustness . a virtual channel technique , which is based on frequency hopping technique , is proposed in chapter 5
第五章借鉴跳频思想提出了虚拟通道技术,并据此设计了一种在载体中嵌入灰度图像作为水印的算法。 |
| 10. | We adjust the strength of embedded watermark in according to the visual model in the ridgelet domain . experimental results show that our algorithm is very effective . performance improvement is obtained
论文根据小脊变换域中的视觉模型，按照小脊变换域中计算出水印嵌入强度的权重，用扩频的方法来嵌入水印信息。 |
