What do the Multimedia Description Schemes describe?
Multimedia Description Schemes provide a way to describe in XML the important concepts related to multimedia content. The Multimedia Description Schemes facilitate the searching, indexing and filtering of multimedia data. Many of the multimedia concepts are defined in the MPEG-7 Principal Concepts List. The Description Schemes (DSs) are designed to describe both the generic aspects of multimedia content management and the specific features of multimedia content. The DSs provide a way to specify immutable metadata related to the creation, production, usage and management of the multimedia data. For example, these DSs can be used to describe the title and author of a multimedia program. The multimedia content-specific DSs provide a way to specify the content directly at a number of levels including signal structure, features, models and semantics, as illustrated in Figure 1. Other multimedia specific DSs are designed to allow efficient navigation and access of the multimedia data. Figure
