面向社交网络的数字指纹技术研究

项目名称： 面向社交网络的数字指纹技术研究

项目编号： No.61272409

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 自动化技术、计算机技术

项目作者： 凌贺飞

作者单位： 华中科技大学

项目金额： 80万元

中文摘要： 社交网络由于用户众多、传播速度快，引发大量的分享媒体被非法复制和传播，造成用户版权侵犯和隐私泄露问题。而现有的数字指纹技术并不能解决这个问题，因为社交网络服务由于其自身的特性，给数字指纹编码、嵌入和检测追踪带来新的挑战性难题。本课题将针对这些难题，从面向社交网络的数字指纹编码、嵌入、索引与快速追踪、应用框架四个方面开展相关理论及关键技术研究。拟结合高维数据感知哈希和社区检测相关理论与方法，基于图谱理论和多核学习，研究具有社区感知的组合数字指纹编码；将分段扩频调制与几何不变域构建相结合，充分利用线性正交变换的可逆特性，研究低复杂度的安全鲁棒数字指纹嵌入算法；利用哈希表和倒排索引结构，实现对数字指纹的快速检测与追踪；最后研究和建立面向社交网络的数字指纹应用系统框架。本课题的研究与实现，不仅能推动数字指纹在社交网络中的应用，还能促进社交网络与数字指纹的交叉研究，将丰富数字指纹相关的理论和技术。

中文关键词： 数字指纹；社交网络；数据感知哈希；叛逆者追踪；隐私泄密保护

英文摘要： With the rapid development of multimedia and Internet, social network services (SNS), such as Facebook, Flickr, Youtube, Twitter and so on, have been popular all over the world in recent years. The multimedia data (image, video, audio, text, etc.) shared online has increased explosively. For instance, Flickr has collected over 5 billion images and the number is increasing by 3 million per day. Another visual content sharing website YouTube receives more than 48 hours of uploaded videos per minute. SNS bring people a lot of convenience to share their photos and video clips with others. However, they also bring ease to unauthorized use of multimedia content, such as illegal duplication, processing and redistribution, which leads to the copyright infringement and privacy leakage of users. Though the digital fingerprinting, an emerging technology, has proven to be very successful to protect the unauthorized distribution of multimedia contents, it is difficult to be directly employed in social networks. Because the digital fingerprinting has to face new challenges on the fingerprint coding, embedding and tracing when used in social network. Firstly, existing fingerprint codes belong to blind coding which is unrelated to the structure of social network. Furthermore, traditional fingerprint embedding methods are very d

英文关键词： digitial fingerprinting；social network；data-aware hashing；traitor tracing；privacy protection