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- The watermark extraction is the inverse procedure of the watermark embedding. 水印的提取则是水印嵌入的逆过程。
- Processing of the digital watermark. Watermark embedding and extraction procedures of integrity. 有关数字水印处理。水印的嵌入与提取的完整程序。
- An optimal watermark embedding strength is obtained to use the optimization of genetic algorithm, and the watermark is embedded with using DCT. 摘要充分利用遗传算法的优点,寻找一个最佳的水印嵌入强度,利用离散余弦变换进行水印的嵌入;
- After introducing basic demands, this article pay most attention to argue about several representative watermark embedding and detecting techniques. 本文在介绍水印技术的基本要求之后,重点讨论几种典型的数字水印嵌入和检测算法。
- However,in many applications it needs an asymmetric scheme ,where a private key is used for watermark embedding,and a public key is used for wa-termark detection. 而许多实际的应用都要求非对称的数字水印方案,即水印嵌入时使用私人密钥,水印检测时只需要一个公开密钥。
- Using independent component analysis of the audio digital watermark DWT algorithm, including the watermark embedding, extraction, and commonly used to test several attacks. 采用独立分量分析的音频数字水印DWT算法,包括水印的嵌入、提取、和常用的几种攻击测试。
- Many watermark embedding schemes in transform domain are proposed such as 2-D DFT,2-D DCT and 2-D DWT which are used to transform the image data,and 3-D DCT and 3-D DWT which are used to transform the video data and 3-D image data. 许多提出的水印方案通常把水印嵌入在变换域内,如2维的DFT域、DCT域和DWT域以及3维的DCT域、WT域。 前3个域主要被用于2维的图像载体,而后2个域主要被用于3维的视频载体和3维的图像载体。
- With the widely application of JPEG image, we studied the exact authentication scheme of JPEG image in which select the embedding area by modifying quantification table, tradeoff between watermark embedding capacity and image quality. 针对使用标准量化表的JPEG图像文件认证算法嵌入容量小、安全性不高的不足,本文使用调整量化表的方法折中水印图像质量和嵌入容量之间的矛盾,使得设计的认证算法在图像保真度和安全性方面都有一定提高。
- According to the HVS's characteristic, the watermarking embedding intensity is determined at the same time. 同时根据HVS的特点来确定水印的嵌入强度。
- Watermark Embedment 水印嵌入
- The watermarking embedding arithmetic we chose is to embed the watermark at the chroma DCT field of the I-VOP frame and Motion Vectors in the MPEG-4 bitstream, based on the idea of spread spectrum. 采用的数字水印算法为在MPEG-4压缩视频流的IVOP帧色度DCT域和运动矢量中添加数字水印。
- Codebook partition concepts are introduced in the proposed algorithms to solve the watermarking embedding problem of VQ based digital watermarking. 在两种算法中引入码书划分的概念,有效地解决了矢量量化水印嵌入问题。
- Algorithm based on key to confuse watermark embedding positions 一种基于密钥的水印嵌入位置置乱算法
- At first, the error model of the vector quantization, watermarking embedding and the noisy channel were established and further the simplified model was given. 为了用蚁群算法进行优化,首先建立了矢量量化、水印嵌入及通过噪声通道的误差模型,并给出了简化模型。
- In such condition, EMB is most persuasive. 在这种情况下,只有循证医学才能够为治疗方案的选择提供最充分的证据。
- A Binary Watermark Embedding Algorithm Based on m-sequence and DCT 基于DCT变换和m序列的二值水印嵌入算法
- Front EMB: Green embroidered 3 logo on front. 前教统局:绿绣三日标识上前线。
- To impress(a pattern or design)as a watermark. 压成水印作为水印而压制(某种形式或图案)
- The embedment and extraction of digital audio watermark simulation is done based on wavelet transform.The results show its reasonableness. 用小波变换的方法对数字音频的水印的嵌入和提取做了仿真研究,仿真结果表明该方法是可行的。
- To impress(a pattern or design) as a watermark. 压成水印作为水印而压制(某种形式或图案)