Research Of The Modeling And 3D Display Integration Of A Variety Of Vector Obstacles In The Field Of Oil Exploration

Over the last years,the design of 3D observation system in the field of oil exploration has been widely discussed.There are further exploration requirements with the aid of 3D visualization technology.Thus,the demands for real-time visualization and its fidelity of geographical environments of exploration are increasingly urgent.Furthermore,as a complex and large ecological system,it consists of distinct types of terrain and a variety of vector obstructions(such as shot point and receiver,road and other man-made obstacles)as well.It is essential to realize high-precision terrain and surface obstacles for optimizing the 3D virtual geography simulation of seismic data-collecting and observation system.At present,the 3D visualization system,leading in China,that is based on mapping texture of the virtual geographical environment to multi-resolution terrain surface directly.On the one hand,the traditional method,in despite of real-time,the obstacle's texture usually is fixed,so that in the process of zooming-in and zooming-out on road,lake and artificial constructed surface obstacles produce a set of distorted patterns.On the other hand,some scholars have carried out research about modeling of vector data and blend in with terrain data,but the obstacle model type,modeling cost,modeling speed,which can barely meet the requirements.Based on the research of related technology at home and abroad,this thesis carries out the modeling and 3D display integration of a variety of vector obstacles in the field of oil exploration technology research.Based on the 3D modeling of terrain and 3D surface obstacle modeling,a GPU-based vector obstacles modeling and integrated display method is proposed by using GPU Tessellation technology and computer graphics and existing visualization technology.The result shows that the method proposed by this thesis,applying to one to ten million obstacles,is of better effect of display and higher speed compared with the traditional ones.