3DSIM-main.zip

3D spatial data conveys both aesthetic and geometry, driving the evolution of spatial data infrastructures (SDIs) from 2D landscapes to the vibrant 3D scenes. Despite this evolution, existing methods describing, managing, and providing services for 3D spatial data often lack coordination and efficiency. Moreover, the inherent complexity of 3D data structures necessitates novel approaches for component-level management and streaming capabilities. In response, this paper introduces an integrated approach for the management and streaming delivery of 3D spatial data at the component level. We develop a generic conceptual model suitable for component-level management of diverse 3D spatial data in SDIs, and the design rationales and key considerations underlying the model are presented. Then, we formalizing the flexible data composition and fine-grained lifecycle management in this model. Following which, we specify this model at cloud-optimized encoding level to enable efficient CRUD operations and streaming delivery of massive 3D spatial data. Our approach enables directly streaming the managed 3D spatial data without the need for redundant replication and conversion. We implement, evaluate, and discuss the propositions across service, accessibility, visualization, analysis cases, and efficiency. The results help develop a new framework and valuable reference for the management and services of 3D in SDIs.