航空物探空间数据三维模块开发

剖面平面图和等值线图作为航空物探数据的成果展示图,专业性很强,而三维可视化技术的迅速发展,为物探数据成果表达提供了新的技术.笔者主要完成了以下任务:①完成了航空物探网格数据向栅格影像的转换,实现了航空物探空间数据的三维显示及相应三维显示效果设置;②获取线段在多表面模型上的剖面线,基于GDI+绘图实现多表面平面剖面线的绘制;③设计了交互式飞行和沿路径飞行两种三维浏览方式,基于实际飞行中飞机的三个速度参数和最低安全高度,提出沿路径飞行中路径平面设计和高度设计的算法,避免了动画画面不连续或飞入地下等不现实情况的发生.

THE DEVELOPMENT OF THE 3D MODEL FOR AEROGEOPHYSICAL SPATIAL DATA

As the resultant charts of geophysical data, profile and contour maps are professional and less intuitive;meanwhile, the development of visualization has provided new technology for the display of geophysical results. The authors have mainly fulfilled these tasks: completing the conversation from the aerogeophysical grid to the raster, achieving 3D display for aerogeophysical data and setting the effect of 3D display;obtaining and mapping the multi-surface profiles based on GDI+;designing the interactive fly and fly along the path, putting forward the algorithm of plane design and height design in path planning in the light of three velocity parameters and safe heights in actual flight, which can avoid such impractical situations as the discontinuity of the animation and the flying into the ground.