Research And Implementation On 3D Visualization Of Seismic Data Based On Multi-resolution Layer

The research and implementation of 3D visualization of seismic data have always been a research hotspot.With the improvement of exploration requirements,the fidelity and real-time requirements in 3D visualization of seismic data are also increasing.How to quickly and efficiently display seismic data in 3D,and more accurately display the formation is a problem that needs to be solved in the current seismic exploration field.Aiming the above issues,this thesis conduct the following research:(1)In order to improve the reading and writing efficiency of seismic data,optimize the 3D display of seismic data and the real-time performance of slice display in all directions,this thesis establishes the Regular Block logic structure to better adapt to the seismic data file format;(2)In order to solve the problem of inconsistent distribution density of seismic sampling data,better balance the density distribution of seismic data and construct a more realistic seismic plane model,this thesis optimizes the Kriging space interpolation algorithm based on Delaunay triangulation;(3)In order to solve the problem of interactive jam and image distortion at different resolutions and better optimize the drawing quality of seismic data 3D visualization,this thesis adopts vertex clustering algorithm and Loop subdivision algorithm to realize multiresolution rendering of seismic data.Finally,through the VTK 3D drawing engine and Qt platform,the seismic data,stratum data,structural model and attribute body model are integrated and displayed in 3D,which improves the visual display efficiency while ensuring the drawing quality and provides a more realistic for geological engineers.