Data Hiding for Video Communication

Abstract

Motivated by the traditional watermarks in paper, ownership verification and tampering detection are the initial motivations of embedding digital watermarks in multimedia source. Examples of these watermark systems are shown in Part II. In general, data hiding provides a way to convey side information that can also be used for many other purposes. For example, Silverstein et al proposed to embed into an image a map indicating the regions for which an enhancement scheme effectively improves the perceptual quality and later to use this embedded information to direct the selective enhancement only for these regions [144] [145]; Song et al used embedding in motion vectors to facilitate key distribution and key updating in secure multimedia multicast [45][147]. In this chapter, we discuss the applications of data hiding in video communications, where the side information helps to achieve additional functionalities or better performance.