信息技术.计算机图形和图像处理.对多媒体对象的表示环境(PREMO).第1部分:PREMO的基本原理

[中文适用范围]： ISO/IEC 14478 指定了支持交互式单媒体和多媒体应用的技术，这些应用识别并强调用户界面、多媒体应用和多媒体信息交换之间的相互关系。 ISO/IEC 14478 定义了一个灵活的环境来包含模块化功能，并且可以通过在标准委员会内部和外部创建未来组件来扩展。 它以一致的方式支持广泛的多媒体应用，从简单的绘图到全动态视频、声音和虚拟现实环境。 ISO/IEC 14478 独立于任何特定的实现语言、开发环境或执行环境。 为了集成到编程环境中，该标准应嵌入到遵循该环境的特定约定的系统相关接口中。 ISO/IEC 14478 提供了超出单片单一介质系统功能的通用封装技术。 这允许重新安排和扩展功能以满足特定应用领域的特定要求。 ISO/IEC 14478 是逐步开发的，第 1 部分到第 4 部分最初可用。 其他组件预计将由 ISO/IEC JTC1 SC24 或其他小组委员会进行标准化。 ISO/IEC 14478 提供了一个框架，可以在其中集成应用程序定义的与环境交互的方式。 描述了输入和输出对象的定义、表示和操作的方法。 应用程序提供的对象结构化也是允许的，并且可以用作开发工具包的基础，用于多媒体和超媒体文档和产品模型数据的创建、呈现和交互。 ISO/IEC 14478 能够支持使用多种媒体的多个同时输入和输出的构建、演示和交互。 多个此类活动可能同时发生，并且应用程序可以调整其行为以最好地利用其环境的功能。 ISO/IEC 14478 包括用于多媒体对象的外部存储、检索和交换的接口。 [外文原描述]： ISO/IEC 14478 specifies techniques for supporting interactive Single, and multiple media applications which recognize and emphasize the interrelationships among user interfaces, multimedia applications, and multimedia information interchange. ISO/IEC 14478 defines a flexible environment to encompass modular functionality and is extensible through the creation of future components, both within and outside of Standards committees. It supports a wide range of multimedia applications in a consistent way, from simple drawings up to full motion Video, Sound, and virtual reality environments. ISO/IEC 14478 is independent of any particular implementation language, development environment, or execution environment. For integration into a programming environment, the Standard shall be embedded in a System dependent interface following the particular conventions of that environment. ISO/IEC 14478 provides versatile packaging techniques beyond the capabilities of monolithic Single-media Systems. This allows rearranging and extending functionality to satisfy requirements specific to particular application areas. ISO/IEC 14478 is developed incrementally with Parts 1 through 4 initially available. Other components are expected to be standardized by ISO/IEC JTC 1 SC24 or other subcommittees. ISO/IEC 14478 provides a framework within which application-defined ways of interacting with the environment tan be integrated. Methods for the definition, presentation, and manipulation of both input and output objects are described. Applicationsupplied structuring of objects is also allowed and tan, for example, be used as a basis for the development of toolkits for the creation of, presentation of, and interaction with multimedia and hyper-media documents and product model data. ISO/IEC 14478 is able to support construction, presentation, and interaction with multiple simultaneous inputs and Outputs using multiple media. Several such activities may occur simultaneously, and the application program tan adapt its behaviour to make best use of the capabilities of its environment. ISO/IEC 14478 includes interfaces for external storage, retrieval and interchange of multimedia objects.