Real-Time Interactive Volume Rendering of Complex Electromagnetic Environment Based on CUDA

Electromagnetic environment is becoming more and more complex in modern battlefield. Using direct volume rendering to describe it is helpful for the commanders to understand the electromagnetic situation. To realize the volume rendering of electromagnetic environment data, the work in this paper uses ray casting algorithm rendering the electromagnetic environment sample data, with the analyzing and solving of the ray correction problem when the sample data are transformed between different coordinate systems. To improve the rendering efficiency, the CUDA is used to speed up the data updating and rendering. The experiment results show that the complex electromagnetic environment can be rendered in real time with the using of CUDA, and the electromagnetic situation information can be clearly displayed with real-time interaction.