基于超小波和全局特征量的数字音频水印技术研究

项目名称： 基于超小波和全局特征量的数字音频水印技术研究

项目编号： No.61462019

项目类型： 地区科学基金项目

立项/批准年度： 2015

项目学科： 自动化技术、计算机技术

项目作者： 黄雄华

作者单位： 桂林电子科技大学

项目金额： 45万元

中文摘要： 数字水印技术是当前的研究热点。因为人类听觉系统比其它感知系统更加敏感，在音频中隐藏水印信息更加困难。 当前对音频水印技术的研究多聚焦于基于内容的第二代音频水印技术。现有研究成果中，认证水印技术还处于定性研究阶段，自适应水印方案尚不十分完善，抗同步攻击的水印技术鲁棒性不强。超小波技术有更强的方向性，对于边缘和轮廓有更好的检测性。 基于上述，本课题拟在超小波域展开基于帧全局特征量的第二代音频水印技术研究，主要内容包括：(1)以音频内容自身为研究对象，提取对各种攻击稳定的帧全局特征量；(2)以人耳对不同频率的感知强弱为基础，建立水印嵌入强度与不同频率间关系的精确关系式，并据此设计自适应音频水印方案和对可靠性、完整性进行定量检验的音频认证水印方法；(3)依据破坏水印同步结构的机理，研究新的同步方法，设计抗同步攻击的音频水印方案。 本课题的研究将为数字音频作品的监督、认证提供理论依据和技术支持。

中文关键词： 音频水印；抗同步攻击；自适应；特征量

英文摘要： Audio watermarking is research focus nowadays. Because of higer sensitivity of human auditory system than other perception systems,to hide watermarking information into the audio is more difficult than in other multimedia. Currently, Research on audio watermarking techniques are mostly focused on the content-based second-generation audio watermarking technology;For existing research results,the authentication watermark technology is in the qualitative research stage still,there are some drawbacks for adaptive watermarking scheme,and audio watermarking technology anti-synchronization attack has poor robustness. Beyond wavelet has stronger direction and better detection ability on edge and contour. On the basic of above,this project intends to launch the second-generation audio watermarking technology research in beyond wavelet domain,which is based on the frame global feature parameter.Primary research content includes:(1)To study the audio content itself, extract stable frame global feature parameter after all kinds of attacks;(2)Based on human ear perceived strength to different frequencies, to establish the precise formula between watermarking strength and different frequencies,and then,to design adaptive audio watermarking algorithm,and watermarking method which is applied to quantitative detection for reliability and integrity;(3)Based on the mechanism of the watermarking synchronization structure being damaged,to study re-synchronization method and to design audio watermarking scheme anti-synchronization attacks. This topic research will provide technical support and theory foundation to supervision and certification of digital audio works.

英文关键词： Audio Watermarking;Anti-Synchronization Attacks;Adaptive;Feature Parameter