三维地震数据的体绘制

3-D SEISMIC DATA VOLUME VISUALIZATION

体视化技术是三维地震数据浏览、分析和解释的有效工具。对于理解地震数据中蕴涵的结构和地层学信息,体视化比使用一组二维切片表示三维数据更自然。解释人员可以突出数据体中某些特定的区域体,以利于更好地理解它们的空间分布,也可以添加合并两个或者更多的,具有不同地震特征的体积区域。医学应用方面的一些体视化方法不能直接应用于地震数据方面,必须考虑地震数据自身特点才能使可视化成功实现。通过分析三维地震数据的特点进而得出实现三维地震数据体视化算法的基本方法,并对实际数据进行了实验。

Volume visualization is a valuable tool for preview, analysis and interpretation of 3-D seismic data. Volume rendering is particularly useful for understanding structural and stratigraphic features presented in seismic data in a more natural way than using a set of 2-D slices. Using volume rendering, the interpreter can highlight specific sub-volumes of the data volume in order to better understand their spatial distribution and superimpose or combine two or more volumes of different seismic attributes as well. The application of visualization methods in the medical field to seismic data must be done carefully. Seismic data have their own particularities that must be taken into account for the visualization to be successful. The basic requisites of 3-D seismic data volume visualization are given in the paper, too.