【国外标准】 Information technology - Multimedia content description interface - Part 9: Profiles and levels

Collects standard profiles and levels for MPEG-7, specified across all parts of ISO/IEC 15938. While all parts are potential candidates for profiling, current profiles concentrate on the Description definition language [ISO/IEC 15938-2], Visual [ISO/IEC 15938-3], Audio [ISO/IEC 15938-4], Multimedia description schemes [ISO/IEC 15938-5], which are based on the namespace versioning defined in Schema definition [ISO/IEC 15938-10]. Provides a set of well-defined definitions and processing rules for description profile and description level, where: A description profile provides a means of selecting and constraining description tools from the MPEG-7 schema, thereby constraining conforming descriptions in their content. A description profile generally limits the use of description tools to subsets of the description tools defined in MPEG-7. The description tools in a description profile support a set of functionalities for a certain class of applications.