信息技术.多媒体内容描述界面.第3部分:视觉的

[中文适用范围]： ISO/IEC 15938-3:2002 的第 2 号修正案由 ISO/IEC JTC 1（信息技术）联合技术委员会、SC 29（音频、图片、多媒体和超媒体信息编码）小组委员会制定。 本文档保留了 ISO/IEC 15938-3 的章节。 本修正案中给出的文本和图形目前被视为对 ISO/IEC 15938-3 中相应部分的补充和/或修改。 [外文原描述]： The structure of this document is as follows. Clauses 2-4 specify the terms, abbreviations, symbols and conventions used throughout the document. Clauses 5-11 contain definitions of the description tools standardized by 15938-3 grouped by the visualfeatures they are associated with, starting with basic structures and containers in Clause 5, through color, texture, shape, motion, localization in Clause 10. Clause 11 contains the remaining, unclassified items.Each description tool is described by the following subclauses:• Syntax: Normative DDL specification of the Ds or DSs.• Binary Syntax: Normative binary representation of the Ds or DSs.• Semantic: Normative definition of the semantics of all the components of the corresponding D or DS.