Temporal And Spatial Semantic Models For Multimedia Presentations

An abstract semantic model based on augmented transition network ATN to model multimedia pre sentations is presented in this paper The inputs for ATNs are modeled by regular expressions Regular expressions provide an e cient means for iconic indexing of the temporal spatial relations of media streams and semantic objects An ATN and its subnetworks are used to represent the appearing se quence of media streams and semantic objects The arc label is a substring of a regular expression In this design a presentation is driven by a regular expression User interactions loops and embedded presentations in multimedia presentations are also provided in ATNs