Three-dimensional reconstruction and visualization of geological material with IDL:a case of Fuzhou geothermal field three-dimension visualization system

Three dimensional visualization of geology constructed-model is used to display the exploration data graphically,which is an important means to learn the geo-body structure and understanding the distribution of permeable zones in geothermal fields,and provide useful information for exploration and assessment of reservoirs.Based on the triangulation (Delaunay) and Kriging interpolation,the geological layer and triangular grid are constructed.According to grid data structure,3D data are generated.Direct Volume Rendering is employed,which combines ray_casting with zbuffer arithmetic.Visualization is realized with programmable data analysis and visualization environment IDL. At the same time,the authors have developed three-dimension visualization system of Fuzhou geothermal Field with interactive incision,analysis and query.