课堂智能导播系统设计与工程化应用

Design and Engineering Application of Classroom Intelligent Directing System

本文设计了一套课堂智能导播系统,通过在教室里布置多个摄像机,各个摄像机分别对教师上课、学生听课、黑板板书等内容进行实时录制,后台程序通过图像处理算法识别出教师的位置及动作、学生的动作等信息,并以此来判断相应的教学场景。然后,根据教学场景实现摄像视频内容、教学课件、电子白板内容的合成与切换。课堂智能导播系统可以用于远程实时直播,也可以用于课后点播,相较于传统方法而言,所录制的视频生动美观、拍摄重点突出。课堂智能导播系统的推广,将极大地丰富网络课堂教学资源,大大提高网络课堂教学视频的质量。

A new smart classroom video synthesis strategy is presented in the paper.In this strategy,video cameras are installed in the classroom to shot the scene of teacher and the scene of students.Courseware on the screen and on electronic whiteboard is also recorded.Image recognition technology is applied to the video stream above for recognizing the location and the action of the teacher and the students.Different methods set in advance for video cutting and synthesizing will run according to the result of recognition.The synthetic video could be used in real-time live class broadcast as well as after-class learning.The application of smart classroom video synthesis strategy will greatly increase the quantity of online teaching video resources and greatly improve the quality of online teaching videos.