基于运动信息的教师到课情况检测  

Detection the situation of teacher to classroom based on movement information

作　　者：郑泽文[1] 陈庆章[2] 

机构地区：[1]浙江工业大学现代教育技术中心,浙江杭州310032 [2]浙江工业大学计算机科学与技术学院,浙江杭州310032

出　　处：《浙江工业大学学报》2010年第4期420-425,共6页Journal of Zhejiang University of Technology

摘　　要：利用学校多媒体教室现有的视频录制平台,采用基于运动的人体目标检测方法来检测教师的到课信息.首先比较了目前几种常用的运动目标检测方法,指出它们的优缺点,然后结合检测的实际环境,提出一种基于相"或"的三帧差分法来检测教师的到课信息.为了克服光照及噪声等因素的影响,采用基于"背景图像块"的自适应阈值分割方法来分割目标.实验结果表明:这种方法可以取得比较理想的检测结果.Based on the moving target detection method, this paper attempts to use multi-media classroom video recording platform, to detect information of teacher to classroom. The article first compares several commonly used moving target detection methods and points out their advantages and disadvantages. Then a three-fame difference method based on phase ＂or＂ is presented to detect the situation of teacher to classroom under the actual detecting environment. In order to overcome the influence of light and noise , an adaptive threshold segmentation method based on the basis of ＂background image blocks＂ is used to partition the target. The experimental results show that this approach can obtain more satisfactory results.

关 键 词：视频录制平台 运动检测 帧间差分 自适应阈值 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]