To deal with it, the encode-mapping rule of a type of text digital watermark based on symbolic characteristics is proposed, as well as it’s embedding and detecting modes of spread-spectrum watermarking.
6)针对同步攻击这一困扰扩频水印技术的难题,研究了一类基于字符特征的文本数字水印技术的编码映射规则,给出了相应的扩频水印加载与检测模型。
参考来源 - 新型文本数字水印技术及其典型应用研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Based on traditional spread-spectrum watermarking, we discuss an asymmetric watermarking scheme using random-phase-shift.
在传统扩频水印技术的基础上，我们讨论了一种基于相位偏移的非对称数字水印方案。
Traditional blind additive ss (spread spectrum) watermarking systems have such features: high robustness, low detection value and small capacity.
传统盲加性扩频水印系统具有鲁棒性高、检测值低、容量小的特点。
The relation between the digital watermarking and spread-spectrum was analyzed at first, A spread-spectrum adaptive digital watermarking scheme based on the wavelet transform was proposed.
在分析了自适应小波变换和扩频特性关系的基础上，提出一种基于小波变换的扩频数字水印算法。
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