Comprehensive overview of various lip synchronization techniques

The modeling and the presentation of multimedia scenarios are challenges of multimedia applications. One of the central characteristics of multimedia data is that they are heavily time-dependent on temporal relationships that must be maintained during playout. In order to flexibly and efficiently present multimedia data streams to users, media streams must be segmented into media objects and time constraints among these objects must be specified and maintained. There is a lack of unified vision of the whole issue and it is difficult to evaluate and compare existing systems. There exists no common terminology and there has been a lack of comparative work. This was the motivation for the overview of the various lip synchronization techniques in a systematic manner. This paper enables the comparison of different synchronization schemes from unified vision.