Geological Targets Visualization Of Key Technologies

Thesis geological targets for the object, based on seismic data, geological targets forvisualization problems in the design of the corresponding solutions and made certain findings.This thesis analyzes the SEG-Y format seismic data, geological section implementsseveral different styles of seismic data display. Using a modified histogram equalizationtechniques to further enhance the image quality.To achieve a three-dimensional visualizationof geological targets, the thesis implemented the level of modeling, fault modeling andsequence modeling.At the level of modeling, focuses on the triangulation algorithm with faultconstraints.Polygon is consisting of the fault constraint lines, and therefore starting from theconstraint line of embedded to achieve a complete embedded fault polygons.For faultpolygonal the quality and efficiency of the embedded, use of constraint lines segmentsideological proposed hybrid subdivision algorithm with fault constraints, fast implementationof triangulation with fault constraints.Combined with a simple data structure of quadrilateralmesh and elegant triangular configuration network features,designed a combination oftriangular and quadrilateral subdivision scheme to generate high-quality mix of ease of storagemanagement grid.According to the fault column information obtained in seismic interpretation,given two algorithms to determine correspondence and connection relationship between thefault pillars, establishment of a fault model. Through the formation skeleton subdivision builtelaborate sequence model.On the basis of the structure modeling completed seismic attributemodeling.Using direct volume rendering techniques for carving processing properties of themodel, by controlling the color of each voxel, transparency and other parameters through thepeople do not care about, highlight important geological target property, and achieved goodtest results.Geologic targets with complex geological surface structure, building fine surface modelwith considerable difficulty, using a texture mapping and lighting models combination to solvethis problem quickly build a fine geological surface model.Given the importance of propertiessectional view in seismic interpretation, using wavelet transform in image decomposition advantage,the integration of a single attribute sectional view to sectional view of amulti-attribute, improve the geological target visualization.