Research And Implementation Of Screen Broadcasting Technology In Interactive Teaching System

In the traditional multimedia teaching process,teachers use PPT to teach,and there is no interaction between teachers and students.With the continuous deepening of education reform and the rapid development of information technology,the intelligent classroom teaching method based on teacher-student interaction gradually gets the first-line teachers and students.Recognized,in the screen broadcast application of teacher-student interaction,screen broadcast has the characteristics of large amount of data and strong real-time performance,which has become a technical difficulty to be overcome in the interactive teaching of smart classroom.The performance of video coding directly affects the performance of broadcast applications.The difficult breakthrough can greatly enhance the user experience of teacher-student interaction,improve classroom teaching efficiency and teaching effect,and promote the quality of classroom teaching.In order to develop the intelligent classroom interactive teaching system and the screen broadcasting function in interactive teaching,this paper improves the interactive video coding of screen broadcasting by improving the intra prediction algorithm in H.265/HEVC to enhance the interactive experience between teachers and students in interactive teaching.It has a good promotion and practical significance for improving the quality of classroom teaching.The main research contents of this paper are as follows:(1)Designed and implemented an interactive teaching system that satisfies the wisdom classroom teaching.The system has the functions of teacher teaching,student answering,analysis of the situation,teacher-student interaction and class sign-in.It can improve the efficiency of teaching and improve the enthusiasm of students in class participation.And thoroughly tested the system features.(2)A screen broadcasting system with basic functions was designed and implemented.Through the built video coding and decoding framework,the improvement makes it have better coding efficiency,and can provide better video coding service for the screen broadcasting system.(3)By analyzing the characteristics of interactive teaching screen video and combining the characteristics of intra prediction algorithm in H.265/HEVC,the intra prediction algorithm is improved from two aspects: block partitioning process and mode selection.The improved frame is analyzed through experimental test.Performance of the intra prediction algorithm.The interactive teaching system and screen broadcast function studied in this paper have made intentional attempts to realize smart classroom teaching.