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	基于觉察上下文的实时档案系统
	张翔 ; 徐光祐 ; 肖小玲 ; 陶霖密 ; ZHANG Xiang ; Xu Guang-You ; XIAO Xiao-Ling ; Tao Lin-Mi
	2010-07-15 ; 2010-07-15
会议名称	第一届建立和谐人机环境联合学术会议（HHME2005）论文集 ; 第一届建立和谐人机环境联合学术会议（HHME2005） ; 中国昆明 ; CNKI ; 中国计算机学会、中国图象图形学学会、ACM SIGCHI中国分会、清华大学计算机科学与技术系
关键词	普适计算 档案系统 觉察上下文 事件检测 Pervasive Computing Archiving System Context Aware Event detection TP319
其他题名	A on-the-spot Archiving System Based on Context Aware
中文摘要	智能环境中的会议档案系统是典型的普适计算研究的一个热点,也为研究普适计算提供了一个基本的实验环境。本文研究了一种基于觉察上下文的实时档案系统,在该系统中提出了一种基于觉察上下文的多层次事件检测的系统框架模型,在该模型指导下,对上下文动态地建模,以及在上下文的指导下,进行不同层次事件的检测。相比较现有的会议档案系统,该系统具有觉察上下文机制,实时特征选择与提取以及多层次事件检测等特点。; The archiving system in intelligent room has been the research of hot spot and provides a basic experimental environment for pervasive computing. A on-the-spot archiving system based on context aware is developed to provide structuring, browsing and retrieving of an archive of automatically analyzed meetings. The archived meeting will have taken place in a room equipped with fully synchronized multi-channel audio and video recording facilities. Three Intel-provided microphone arrays detect the direction of the sound resource and speech activities in real time; two video cameras fixed on each side of the table and one video camera behind the table observe various activities of the speaking man. Five situations including monologue (one person speaks continuously without interruption for a long time), presentation (one person at font of room makes a presentation using the projector screen), discussion (all persons engage in a discussion), break (each person is free), no person (empty in the meeting room) are designed for the intelligent meeting scenario in this system. A system framework based on context aware is constructed for context modeling and event detection at different layers in dynamic scenes. Reasoning in this system worked by integrating top-down hypotheses with bottom-up recognition. Context is modeled from some information at three different layers, and specifies which events are to be detected. Events at three different layers in this system are defined according to this meeting scenario: (1) situation events for global activities, for example, monologue, presentation, discussion, break, no person; (2) role events for change in relation among different entities, for example, speaking, taking notes, walking and gaze direction;(3) entity events for occurrence or disappearance for the entity, for example, entrance of person A. Compared with some current meeting archiving system, our system has some different characteristics, such as context aware analyzing mechanism, on-line features selection and extraction, and event detection at different layers.; 国家自然科学基金(No.60273005); 湖北省自然科学基金(No.2004ABA043)
语种	中文 ; 中文
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/69949]
专题	清华大学
推荐引用方式 GB/T 7714	张翔,徐光祐,肖小玲,等. 基于觉察上下文的实时档案系统[C]. 见:第一届建立和谐人机环境联合学术会议（HHME2005）论文集, 第一届建立和谐人机环境联合学术会议（HHME2005）, 中国昆明, CNKI, 中国计算机学会、中国图象图形学学会、ACM SIGCHI中国分会、清华大学计算机科学与技术系.

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