基于CUDA架构的复杂电磁环境空间数据实时体绘制技术

Real-time Volume Rendering Technique for Complex Electromagnetic Environment Space Data Based on CUDA Architecture

当前电磁环境日益复杂,使用直接体绘制技术展现电磁态势能够辅助指挥员直观、准确的掌握战场态势。研究电磁环境的体绘制技术:使用光线投射算法对电磁态势的采样数据场进行绘制,分析并解决了采样数据场在不同坐标系间变换时产生的光线修正问题,同时为了提高直接体绘制的绘制效率,利用CUDA架构对更新数据的计算和光线投射算法的绘制过程进行加速。实验结果表明,使用CUDA架构加速能够实时绘制复杂电磁环境,绘制结果较好的展示了电磁态势的分布等信息,同时能够进行实时交互。

Electromagnetic environment is becoming more and more complex, using direct volume rendering technique to display it is helpful for the commanders to understand the electromagnetic situation. This research was focused on the electromagnetic environment volume rendering technique. Ray casting algorithm was used to render the electromagnetic situation sample data, and the ray modify problem was analyzed and solved which was generated when transferred the data between different coordinates. For improving the rendering efficiency, the process of updating data and rendering was ameliorated using CUDA. The experiment shows that using CUDA could render in real-time, get a good render result for the electromagnetic situation and meet the requirement for real-time interaction.