信息技术.多媒体内容描述接口.第15部分:视频分析用紧凑型描述符

[中文适用范围]： 本文件涉及描述符技术在搜索和检索应用程序中的应用，特别是视频中的视觉内容匹配。视觉内容匹配包括大对象、小物体和场景的视图匹配，并且对部分遮挡、视角变化、相机参数和光照条件的变化具有鲁棒性。感兴趣的物体包括平面或非平面、刚性或部分刚性、纹理或部分纹理的物体，但不包括人和面部的识别。数据库可以是大型的，例如广播存档或互联网上的视频。因此，此类应用程序需要视频描述符，这些描述符在大小和运行时间上与单帧（静态图像）描述符（例如CVDS, ISO/IEC 15938-13）相比更小且效率更高。本文件为现有的标准套件提供了一个补充工具，例如ISO/IEC 15938-13。 [外文原描述]： This document addresses descriptor technology for search and retrieval applications, i.e. for visual content matching in video. Visual content matching includes matching of views of large and small objects and scenes, with robustness to partial occlusions as well as changes in vantage point, camera parameters and lighting conditions. The objects of interest comprise planar or non-planar, rigid or partially rigid, textured or partially textured objects, but exclude the identification of people and faces. The databases can be large, for example broadcast archives or videos available on the internet. Such applications thus require video descriptors that enable matching with smaller descriptor sizes and shorter runtimes as compared to application enabled by single-frame (still image) descriptors (e.g. CVDS, ISO/IEC 15938-13) in the video domain. Compact descriptors for video analysis for search and retrieval applications: — enable design of interoperable object instance search applications; — minimize the size of video descriptors; — ensure high matching performances of objects (in terms of accuracy and complexity); — enable efficient implementation of those functionalities on professional or embedded systems. This document provides a complementary tool to the suite of existing standards, such as ISO/IEC 15938-13.