基于嵌入式Linux的在线开放课程教学视频录制系统  

Online Open Course Teaching Video Recording System Based on Embedded Linux

作　　者：王苗 李明倩 刘芳[2] WANG Miao;LI Ming-qian;LIU Fang(Wuhan University of Science and Technology Experimental Training Centre,Wuhan 430083 China;Wuhan University Computer Science Institute,Wuhan 430072 China)

机构地区：[1]武汉城市学院实验实训中心,湖北武汉430083 [2]武汉大学计算机学院,湖北武汉430072

出　　处：《自动化技术与应用》2023年第4期126-129,共4页Techniques of Automation and Applications

基　　金：2020年湖北省教育厅大学生创新创业训练计划项目(S202013235008)。

摘　　要：针对录制视频质量差的问题,提出基于嵌入式Linux的在线开放课程教学视频录制系统,分析嵌入式Linux的特性以及多媒体技术,结合系统需求,将系统划分为多个不同的模块,通过各个模块分别录制不同层次和教学需求的教学视频。将在线开放课程教学视频分为连续区域和不连续区域两个部分,提取视频中各个区域的对象边界;采取高斯滤波和自适应滤波进行去噪,完成视频预处理。实验结果表明,系统能够有效减少视频播放卡顿次数,提升视频完整度,获取满意的视频录制效果。Aiming at the poor video quality.This paper proposes an online open course teaching video recording system based on Embedded Linux,analyzes the characteristics of embedded Linux and multimedia technology,and divides the system into several different modules according to the system requirements.The teaching videos of different levels and teaching needs are recorded through each module.The online open course teaching video is divided into two parts:continuous region and discontinuous region,and the object boundary of each region in the video is extracted;Gaussian filter and adaptive filter are used for denoising to complete the video preprocessing.The experimental results show that the system can effectively reduce the number of video playback stuck,improve the video integrity,and obtain satisfactory video recording effect.

关 键 词：嵌入式LINUX 录制系统 视频预处理 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论]