抗几何攻击的数字水印技术综述

目前，鲁棒水印技术的研究取得了很大进展，但如何抵抗几何攻击仍然是水印领域所面临的最大困难。抗几何攻击的水印研究逐渐成为研究热点之一，许多学者提出了大量不同的水印算法，大致可划分为第一代数字水印和第二代数字水印。本文主要对这两类数字水印算法进行综述和分析，总结各类方法的优缺点，并给出下一步可能的发展方向。

Overview of Digital Watermarking Techniques Against Geometric Attacks

Although we have made great progress in the research of robust watermarking techniques, how to resist the geometric attacks is one of the most difficulties in the watermarking field. So the research of watermarking techniques against geometric attacks has now become a focus. And many algorithms are proposed, which fall into two classes: the first and second generation watermarking schemes. In this paper the current methods against geometric attacks are surveyed and analyzed, and the advantages and disadvantages of each class are summarized, and some probable development directions are presented.