首页 | 本学科首页   官方微博 | 高级检索  
     


Robust copyright protection scheme for digital images using overlapping DCT and SVD
Authors:Xiaotian Wu  Wei Sun
Affiliation:1. School of Information Science and Technology, Sun Yat-sen University, Guangzhou 510006, China;2. School of Software, Sun Yat-sen University, Guangzhou 510006, China
Abstract:In this paper, a robust lossless copyright protection scheme, based on overlapping discrete cosine transform (DCT) and singular value decomposition (SVD), is presented. The original host image is separated into overlapping blocks, to which the DCT is applied. Direct current (DC) coefficients are extracted from the transformed blocks to form a DC-map. A series of random positions are selected on the map and SVD is performed to construct an ownership share which is used for copyright verification. Simulation results are carried out, demonstrating the robustness of the proposed scheme against different image-manipulation attacks.
Keywords:
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号