A Survey of RST Invariant Image Watermarking Algorithms

In this article, we review the algorithms for rotation, scaling andtranslation (RST) invariant image watermarking. There are mainly two categories of RST invariantimage watermarking algorithms. One is to rectify the RST transformed image before conductingwatermark detection. Another is to embed… Read moreA Survey of RST Invariant Image Watermarking Algorithms

Survey of Network-Based Defense Mechanisms Countering the DoS and DDoSProblems

This article presents a survey of denial of service attacks and the methodsthat have been proposed for defense against these attacks. In this survey, we analyze the designdecisions in the Internet that have created the potential for denial of service… Read moreSurvey of Network-Based Defense Mechanisms Countering the DoS and DDoSProblems