An irregular triangle mesh buffer analysis method for boundary representation geological object in three-dimension
 作者： Nan Li,  Leon Bagas,  Mark Lindsay,  Daniel Wedge,  Lin Bai,  Xianglong Song 作者单位： 1Institute of Mineral Resources, Chinese Academy of Geological Sciences2The University of Western Australia3Chengdu University of Technology 刊名： Earth Science Informatics, 2017, Vol.10 (2), pp.149-167 来源数据库： Springer Nature Journal DOI： 10.1007/s12145-016-0283-1 关键词： 3D modeling;  Surface reconstruction;  Buffer analysis;  Spatial tessellation;  Signed Euclidean distance field; 英文摘要： Three-dimensional (3D) buffer analysis is a basic function of spatial analysis used widely in 3D Geographic Information Systems (3DGIS). Current buffer analysis methods for spatial points and curves generally function well. One exception is buffer zone of surface. Previous researchers in this field have used voxel models to overcome this limitation; however, defects with voxel model buffer analysis include redundancies, approximations, and poor visualization characteristics. In this contribution, a surface buffer analysis method is presented for the boundary representation of geological objects. Exact geometric representation is achieved via the construction of irregular triangle meshes in 3D. The results can be used for 3D structural modeling and then form the basis for spatial analysis... or model-based quantitative assessment in mineral potential mapping and resource evaluation. Three comparisons between existing voxel methods and our new method, evaluating visualization, precision and redundancy, are conducted. The comparisons show that our proposed method is robust and provides a higher quality output than voxel modeling. Finally, uncertainty analysis of buffer distance in different geological objects was discussed. 原始语种摘要： Three-dimensional (3D) buffer analysis is a basic function of spatial analysis used widely in 3D Geographic Information Systems (3DGIS). Current buffer analysis methods for spatial points and curves generally function well. One exception is buffer zone of surface. Previous researchers in this field have used voxel models to overcome this limitation; however, defects with voxel model buffer analysis include redundancies, approximations, and poor visualization characteristics. In this contribution, a surface buffer analysis method is presented for the boundary representation of geological objects. Exact geometric representation is achieved via the construction of irregular triangle meshes in 3D. The results can be used for 3D structural modeling and then form the basis for spatial analysis... or model-based quantitative assessment in mineral potential mapping and resource evaluation. Three comparisons between existing voxel methods and our new method, evaluating visualization, precision and redundancy, are conducted. The comparisons show that our proposed method is robust and provides a higher quality output than voxel modeling. Finally, uncertainty analysis of buffer distance in different geological objects was discussed.

• triangle　三角形
• buffer　缓冲器
• irregular　无秩序的
• analysis　分析
• voxel　体元
• tessellation　棋盘形铺嵌
• reconstruction　复原
• representation　表现
• visualization　目测
• modeling　制祝型