Research On Indoor Visualization Method Of User Role And Scene Content Association

With GIS developed from outdoor space to the indoor-outdoor integration,buildings the important elements in urban scenes show a large amount of information.Indoor map has become a wide demand for people to improve the geographic information service,and it is a hot topic in the field of cartography and geographic information system.Because of particularity of the indoor environment,complex internal structure,strong masking vision,special access conditions,traditionally undifferentiated visualization method is not appropriate for users to quickly get useful information.Therefore,it is necessary to visualize the scene effectively around the different user background and the different scene content,and provide the user-centered indoor map visualization service.On the basis of the analysis of the recent development of adaptive map visualization and indoor map representation,this paper presents an indoor 3D visualization method associated with the user role and the indoor scene.Firstly,this paper analyzes the user character,divides the user role into the social role,the relation role and the process role.At the same time,we explore the meaning of scene content and discuss the semantic division of indoor scene.To describe the relationship between user roles and scene content,the concept of object function is proposed and the relationship between the three is constructed.The ontology modeling method and tools are used to build the associated ontology model of user role and indoor scene,and an ontology based rule based expression method is proposed.By designing a user-defined rule base,the rule-related reasoning functions are established.Based on ontology semantic reasoning,mining the valuable information associated with user roles and indoor environment.In the aspect of indoor map visualization,on the basis of describing the visualization pattern of a single object,a 3D visualization expression intensity mapping table is established as a reference table for visualization rendering effect.Finally,a 3D visualization algorithm is proposed to associate the semantic inference result and the expression intensity mapping table.The scene is rendered dynamically and dynamically,and the user-centered 3D visualization service is realized.This paper designs and implements a prototype system for indoor 3D visualization based on user role and indoor scenes,simulates the real scene of a school laboratory,and takes two different roles,fireman and visitor,as case studies.The result shows that this method can realize information recommendation according to the user roles and indoor scene information,and provides relevant information more effectively than the ordinary map.It's a feasible method to improve the user's roaming experience in indoor scene.However,the current indoor 3D visualization information recommendation method can't fully meet the diverse demands of users,and the future work will continue to expand to a wider range of applications.