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《Science of Surveying and Mapping》 2008-S3
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A method for optimizing LOD node in large-scaled scene based VRML

LIU Wei-wei①,ZHANG Jun②(①Liaoning Technical University ,Fuxin 123000,China; ②Chinese Academy of Surveying & Mapping,Beijing 100039,China)  
One can perfectly mould every scene of the real world used by Virtual Reality Modeling Language (VRML).Because of it has a smaller scene file than any other virtual reality system,and it's layouts are simple,and it's language is visual,it has been used everywhere in networks' application. But,also,it's disadvantage is apparent,because of it's LOD(level of details) node can not use memory efficiently ,it is frequently appears out t the mistake that caused by memory exhausted,even lose the node should be shown. So this text ,aims at resolving the problem discussed above,makes use of Proximity Sensor node affords a method to optimized the LOD node ,it is a useful method to control the usage of computer's memory,and let VRML to display the large-scaled virtual scene smoothly!
【CateGory Index】: TP391.9
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