Adaptive Optimization Of Large-scale Seismic Volume Visualization And Image Transmission Techniques

As an important research method,3-D visualization technique has been widely applied in the field of petroleum geology.However,with the development of seismic exploration techniques,the formats of data collected are more abundant and the scale of data is larger than before.How to process these seismic data with more diverse formats and larger scale efficiently becomes an urgent problem in seismic volume visualization.Furthermore,in order to support remote interactive visualization,it is necessary to develop a technique of fast seismic image transmission.Aiming at the above problems,the main works are as follows:(1)The method of local memory import is adopted,aiming at the inefficiency of unconventional format data preprocessing,which can effectively reduce the time of seismic data preprocessing.(2)Combining with the idea of multi-resolution rendering,an adaptive double-stage rendering strategy is proposed to balance the contradiction between interactive efficiency and display quality.This strategy can satisfy the real-time performance of volume interactive display and ensure the final display quality simultaneously.(3)A snapshot display mode is designed to solve the problems of repeated scene initialization and non-reusability of observation parameters in comparative observation of relevant seismic volumes.This model is more beneficial to find the correlation and difference among multiple relevant volumes.(4)A progressive compress and transmission technique is proposed to meet the requirement of fast transmission of high-quality seismic images under limited network bandwidth.This technique can send region-of-interest to client preferentially to reduce waiting time and enhance user’s interaction experience.At last,the above methods and techniques are applied to seismic acquisition system.The testing results show that the efficiency of unconventional format data preprocessing is improved by more than 84%.The interactive frame rate is increased by more than 69% through the double-stage rendering strategy.And the snapshot mode can satisfy the requirements of fast switching among multiple relevant volumes.In the remote visualization testing,the image transmission technique can also provide the fast transmission of high-quality seismic images.