3D Visualization and Information System Design of Geological Hazard in Huangshui River Basin Based on Cesium
In order to achieve visual management of geological hazard in Huangshui River Basin of Qinghai Province and improve the efficiency of disaster information processing,the design and development of a disaster 3D visualization system and a backend information management system were carried out through oblique photogrammetry and field investigation,combined with database,front-end and back-end technologies.The 3D visualization system was based on the Cesium engine,which has the functions of multi-dimensional display of the earth,fast positioning,and base map addition.It has expanded and developed three characteristic modules:data loading,spatial processing,and roaming display.It can load vector data,image data,and oblique photography models of the research area,meeting the needs of spatial measurement.It has achieved the dual control analysis of"hidden danger points+risk areas"by drawing labels on the model and combining on-site investigation results.The backend information management system has achieved spatial query and analysis of basic disaster situations,development trends,precipitation,population,GDP and other information within the region,providing technical support for geological disaster risk assessment and protection.
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