Visualization System of Massive 2D Seismic Data

摘要

With the fast development of Visualization Technology, massive data need to be converted into intuitive graphics in more and more areas, such as in oil and geological exploration fields. In order to achieve highly efficient visualization of 2D seismic data, the following important methods are employed to improve the speed of rendering. The first method is to process massive data in point coordinate (x, y) forms. The second method is to draw local area of graphics by figuring out what points need to be painted for that graphics of massive data that sometimes can't be shown completely on a displayed screen, which results in a high rate of drawing and less usage of memory. The third method is to pick out a sparsing algorithm by K-Neighboring in order to see the whole picture of massive 2D data or to zoom out the whole picture to guarantee the quality of pictures. And sometimes processors need to view detailed graphics of a region of 2D seimic data, then it proposed bilinear interpolation algorithm. Overall, visualization system of massive 2D seismic data presented in this paper is based on the methods proposed above and uses Qt as a development language. Finally, high efficiency is achieved by drawing local area data and bitmap-cache mechanism when massive 2D data need to be displayed on more screens; and also high speed is obtained to render by operating 2D graphics such as by zooming out through K-Neighboring sparsing algorithm.