信息技术.多媒体应用格式(MPEG-A).第3部分:MPEG图层应用格式

[中文适用范围]： ISO/IEC 23000 的这一部分，也称为“照片播放器 MAF”，规定了数字照片库应用程序的文件格式。它为图像和相关元数据的传输建立了标准化解决方案，以促进不同设备和平台之间简单且完全可互操作的交换。元数据集包括 MPEG-7 视觉内容描述，以及基于采集的元数据（例如日期、时间和相机设置）。这使兼容设备能够支持新的内容增强功能，例如智能浏览、基于内容的搜索或自动分类。 [外文原描述]： ISO/IEC 23000-3:2007 specifies a solution for digital photo library applications. It standardizes the packaging of images and associated metadata, enabling interoperable exchange across diverse devices and platforms. The supported metadata include image-acquisition parameters (such as date, time and camera settings), as well as MPEG-7 visual content descriptions. This allows conforming devices to support new content-enhanced functionality such as intelligent browsing, content-based search or automatic categorization. ISO/IEC 23000-3:2007 makes it possible to organize photos into categories based on their content - for example, the people and places depicted, or events taking place in photos; perform advanced content-based searches through collections of photos; bundle photos and favourite ways to show them, into a single MPEG-4 file; link to external resources such as other images (outside the MPEG-4 file) or web-pages. The major components of ISO/IEC 23000-3:2007 are a method to encapsulate a set of JPEG compressed images in an MPEG-4 file; concise subsets of MPEG-7 metadata to describe the individual images and the overall collection; a method to embed this binary MPEG-7 metadata in the MPEG-4 file. ISO/IEC 23000-3:2007 is a response to the need for persistent and interoperable linking of digital image collections with metadata in order to support advanced access to content. It offers a flexible solution for applications ranging from consumer digital photography to advertising and e-commerce.