Design And Research Of Multi-channel Augmented Reality System For Online Education Of Preschool Children

In the past few decades,Augmented Reality(AR)has been continusely developing and been variously used in different areas.This makes it become the new technological trends that can not be ignored in the Internet era.However,the lack of application content and matching interaction hindered the popularity of AR.Children's education has always been the hot topic which most peple pay attention to.The combination of Internet and AR brings children's education more new changes,which is of great siginificance to the development of education.The application of AR in the field of children's education is still in the maket cultivation period,and the large-scale application has not formed yet.Therefore,this study focuses on building the guidance framework of AR system development.The structure relationships of interaction design elements such as user,activity,context,technology and so on in the Augmented Reality system are explored in combination with Multi-Modal interaction.Finally,the AR system framework is practiced in the field of preschool childrens' online education.Firstly,a Multi-Modal Augmented Reality model(MM-AR)for specific domain is constructed by the method of model building.It includes a two-dimensional multi-modal interaction model,an augmented reality conceptual model and a domain-specific characteristic variable set.Integrating these models and set into a system based on the PACT interactive system framework which composed of people,activity,context and technology elements.Secondly,decompose the MM-AR model with the example of designing an online education system for preschool children,and reach the persona of preschool children(include sense-multi-modal opitimization model and effect-multi-modal adaptive model)and feature descripition of online education.Finally,carry out the design practice according to the results of the model decomposition,and conduct usability testing evaluation of the practical results to verify the rationality of the original system model(MM-AR).The research and establishment of Multi-Modal Augmented Reality system has an innovative guidance and impetus to the application of augmented reality technology in the fields of education,industry,medical treatment and so on.The combination of multi-modal interaction with augmented reality and online education has practice instruction significance and theoretical innovation significance for creating a framework mode of content and operation matching in multimedia environment,and establishing a deep correlation between users and learning methods.