摘要
以DCT变换为基础,结合了数字图像JPEG压缩和通信CDMA技术的特点,提出了一种基于双DCT变换、扩频技术的二维数字指纹追踪算法。通过像素值和DCT系数两种平均合谋方式攻击和追踪性能分析验证,该追踪方案能够有效抵抗多用户合谋和抗JPEG压缩,同时具有较高的峰值信噪比和良好的追踪特性。
Based on the DCT transform, combining the features of JPEG compression in digital image and CDMA technology in communication, this article presents a tracking algorithm for two dimensional digital fingerprinting according to the double DCT transform, spread spectrum technology. By the pixel and DCT coefficient average-collusion-attacking, the analysis of tracking validation, the scheme can effectively resist the multi-user collusion and anti JPEG compression, and has a higher peak signal to noise ratio and good tracking characteristic.
出处
《信息技术》
2015年第1期97-100,共4页
Information Technology
关键词
数字指纹
扩频
DCT变换
JPEG压缩
digital fingerprint
spread spectrum
DCT transform
JPEG compression
作者简介
李兴林（1987-），男，硕士研究生，研究方向为信息安全。
