基于海量地震数据的多分辨率扩展八叉树模型
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摘要
针对现有PC硬件条件的限制和地震数据的海量特征,提出一种基于扩展八叉树的分块多层多分辨率模型。该模型保存了叶节点属性和中间节点属性,实现多分辨率建模,采用基于Morton码的数据块索引方式来提高查询效率。实验结果表明,该模型是一种高效的海量地震数据组织方式,在地质建模领域具有较高的应用价值。
Aiming at limitations of existing PC hardware and the feature of mass seismic data,this paper presents a partitioning multilevel multi-resolution model based on extended octree. The model stores attribute of leaf nodes and intermediate nodes,realizes multi-resolution modeling,and uses data block index method based on Morton code to enhance query efficiency. Experimental results show that the model is an efficient organization style of mass seismic data,and it has well application value of the geological modeling.
Aiming at limitations of existing PC hardware and the feature of mass seismic data,this paper presents a partitioning multilevel multi-resolution model based on extended octree. The model stores attribute of leaf nodes and intermediate nodes,realizes multi-resolution modeling,and uses data block index method based on Morton code to enhance query efficiency. Experimental results show that the model is an efficient organization style of mass seismic data,and it has well application value of the geological modeling.
引文
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[2]Boada I,Navazo I,Scopigno R.Multi-resolution Volume Visuali-zation with a Texture-based Octree[J].The Visual Computer,2001,17(3):185-197.
[3]Guthe S,Wand M,Gonser J,et al.Interactive Rendering of Large Volume Data Sets[C]//Proc.of IEEE Visualization2002.Boston,Massachusetts,USA:IEEE Computer Society,2002.
[4]Schneider J,Westerm A R.Compression Domain Volume Render-ing[C]//Proceedings of the14th IEEE VIS’03.Seattle,WA,USA:IEEE Computer Society,2003:293-300.
[5]Daniel W,Manfred W,Thomas E.Maintaining Constant Frame Rates in3D Texture-based Volume Rendering[C]//Proceedings of Computer Graphics International.Washington D.C.,USA:IEEE Computer Society,2004:604-607.
[6]William R.Gigabyte Volume Viewing Using Split Software/Hardware Interpolation[C]//Proceedings of the2000IEEE Sympo-sium on Volume Visualization.New York,USA:ACM Press,2000:15-22.
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