| In recent years, data visualization technology has become one of the popular scientific research technology that can improve the efficiency and accuracy of engineering. Data visualization using computer graphics technology to data processing, convert to display on the screen graphics or image, through interactive processing to mining data mutual rules, etc. Data visualization technology has been widely used in various fields, especially in geological exploration of engineering application, make the geological prospecting reduce risk and cost, but also for its improve the efficiency and the quality of seismic data processing. This paper mainly research is based on Qt seismic data visualization system, this paper introduces some relevant knowledge visualization technology, such as data visualization processing flow, two-dimensional data visualization, etc, and on the standard seismic data format SEGY and this system USES GM data formats are described. This paper using Qt to design the user interface, so the special introduction series, including important signals and slots mechanism. The purpose of software engineering is given, the cost and time can be modified to develop a gender, maintainability, reusability, transportability, comprehensible, etc can satisfy the needs of the user, software, therefore, as close as possible to achieve their goals, needs analysis and system analysis and design is very important. In this paper, the system demand on variety of needs analysis, such as running environment demand, functional requirements, interface requirements, performance requirements, and according to various requirements for a feasible system analysis and design. This paper introduces the realization of seismic data graphical and interactive realization. Firstly this paper introduces seismic data sources, in dealing with the original seismic data when reinhard how abnormal values of criterion eliminate. Then in graphical realization for readers, this paper introduced waveform line graphics and color value graphics, and related technical issues, such as the curve smooth wave line graph, and use double buffering realize local control redraw and improve the efficiency of the system. In interactive realize, this paper introduces the interactive coordinates transformation algorithm, energy spectrum and small profile coordinates transformation algorithm is presented for different users pick up speed, migration, views of the linkage time and NMO panels show coordinates of mutual conversion realized at the way of integrating graphics users operate, thereby resection resection data preprocessing link cannot identify some belongs to the normal range but does not conform to the geological characteristics of data. |
