A Hierarchical Model Loading Strategy in WebBIM Scene Based on Cloud-Edge-Terminal Collaborative Architecture.

Focus on the problem of long loading time of complex model and user QOE in WebBIM scene, this paper proposes a hierarchical model loading strategy in WebBIM scene based on cloud-edge-terminal collaborative architecture. First of all, with edge computing technology, we apply the cloud-edge-terminal collaborative architecture to BIM scenarios to speed up model loading and service response processes. Next, by following the architectural semantics, the transformed IFC file is divided into index, geometry, material and related attributes, and component priorities are designed using geometry, semantics and user relevance to realize model loading based on the cloud-edge-terminal collaborative architecture. Finally, a cloud-edge-terminal collaborative BIM experimental scene is built, and we select 7 IFC scenes to compare initial loading time, earliest operable time, and effective pixel filling degree with BIMServer, the experimental results show that our strategy can effectively improve the above three aspects of performance and user QOE in WebBIM scene.