A Digital Image Watermarking Scheme against Geometric Attacks

作者：Hengyi, Zhang^*; Chen, Xi; Wang, Xianling; Yuan, Kaiguo

来源：2nd International Symposium on Intelligent Information Technology Application, Shanghai, PEOPLES R CHINA, 2008-12-21 To 2008-12-22.

DOI：10.1109/IITA.Workshops.2008.238

• ROBUST

Viewing the current situation of malicious tampering to the image feature points which are used for detecting, we proposes a Identifier-based scheme that can relocate tampered feature points. The scheme can effectively reconstruct calibration coordinates by examining embed identifiers in several rings around 'MRFP' (Most Robust Feature Points) to eliminate the geometric attacks such as translation, retro-flexion and blur etc. In order to get enough information for judgment, we use three different color elements R, G and B of a pixel to re-embed related identifiers. In addition, when under local attacks, a 5*5 Matrixes Method is also invented to search these particular rings. Simulation results show that this proposed scheme is robust against normal geometrical attacks, validly resolving the watermarking expired problems which are caused by that the position of feature points can be easily detected and tampered.

• 出版日期2008
• 单位北京邮电大学; 网络与交换技术国家重点实验室