Hence , it comes forth a new research field in the information technology , i . e . content - based video analysis and retrieval ( cbvar ) . cbvar means video retrieval from enormous video database through matching of patterns from video analysis and feature extraction to represent its content 为此,在信息学科形成了一个全新的研究领域,即基于内容的视频分析与检索( content - basedvideoanalysisandretrieval , cbvar )技术。
Digital instructional resource system is made up of multimedia material database , multimedia courseware database , educational video database , independence learning web - course database , tuition web - course database , teachers ' teaching websites and excellent web - course database 数字化教学资源系统可包括多媒体素材库、多媒体课件库、教育视频资源库、自主学习型网络课程库、讲授型网络课程库、教师个人教学网站群、精品课程库等。
At present , we need to organize and manage video data and information in many fields , such as digital library , military information system , web information system and video database etc . compared to traditional text information , video data contains too much information and is hard to describe , so it becomes difficult to find the proper information that we need 现在，在数字图书馆、军事信息系统、 web信息环境、专业视频库等应用，需要对视频数据和视频信息进行组织和管理。同传统的文字信息相比较，视频数据具有信息量大、难以准确描述的特点，因此人们很难从海量的视频信息中找到自己所需的信息。
We analyse features of digitilized dancing video , propose mothed of feature expression of frames in digital video , put forward motheds of video parsing , shots partition , key frame obtaining and video retrieval towards digital dancing video . and set up the prototype system of a digital dancing video database 我们分析了数字化舞蹈视频的特点，提出了数字视频中图像帧的特征表达方法，提出了有针对性的视频分析、镜头分割、关键帧获取和按内容视频检索方法，并在此基础上建立了一个数字舞蹈视频库的原型系统。
The network scheme of power supply section , the hardware and software environment of this system and the database access mode are introduced briefly . besides , it discuss the method of gis and multimedia for pushing to deal with an emergency , aimed at the approach of video data management . the idea of video database is brought in the management of the video data in this system , and the segmentation and indexing are implemented using simple method 叙述了系统概要设计的方法步骤，尤其是由数据流图到软件结构图的转化过程；介绍了几个主要功能的实现方案和数据推送技术；简单介绍了供电段的网络建设方案、系统软硬件环境的选择和数据库访问模式的选择；阐述了事故抢修智能支持的gis解决方案和多媒体解决方案，并着重阐述了视频数据管理的实现方法；在视频数据管理中成功引入了视频数据库思想，用简单实用的办法实现了视频数据的分段和检索。
