Research And Practice Of 3D Model Service

GIServices is effective technology for data share,and 3D model is a useful method to realize spatial information visualization.This paper research 3D model service on suppling 3D spatial model data,and realize shareing and visualization of 3D mode on interenet.First, the base theory of GIServices is investigated.The paper expatiates on the content of 3D model service and multi-granularity service manner, anylyses the technic factor and point of establishing survice systerm base on between web services and WCF, put forward a technique of establishing 3D model service base on WCF.Second, based on 3D model construction technique, anylyses and introduces the content, characte, demand and key technique of 3D model apply for service.The paper designs construction of regular grid DEM, realizes You Cheng compression coding and four fork tree compression coding, and advance the compression coding base on the idea of max high for 3D terrain model.It designs a 3D ground object model construction and realizes the conversion from 3ds to w3d.Next,based on anylising the content of multi-granularity,designs the interface of visiting survice and realizes multi-granularity 3D model service base on WCF.The method of data organizetion and storage are decision.Finally,based on researching the method of 3D visualization, develops a 3D browser control for IE to show 3D scene,designs the framework of 3D model service platform and realizes the reserarch conclusion.