基于改进IBFV的矢量场剖面纹理可视化

Improved IBFV-based Visualization of Vector Field Section

通过分析经典IBFV方法可视化效果差的原因,提出改进方法:在IBFV过程中使用相关性较高的背景纹理图像。该背景纹理使用GLSL由GPU加速的多重线积分卷积生成。研究了将三维矢量场投影到二维图像空间的方法;利用GPU的顶点颜色插值功能,将离散矢量场转换为连续的纹理数据场,以便于使用GPU完成线积分卷积运算。在算法实现过程中,研究各参数对显示结果的影响,找出合适的取值。通过以上分析和研究,相比于IBFV改进的算法的可视化效果将得到显著提高。

By analyzing the reasons for the poor effect of typical IBFV method, the improved method was proposed using background texture which is generated by multiple LIC accelerated by GPU and GLSL during the process of IBFF. The method of projecting 3D vector field to 2D image space was studied. Vertex color interpolation function of GPU Was used to transform discrete vector field to continuous texture data field in order to complete LIC by GPU. During the process of improved algorithm, the proper parameters were found out by studying the effects of parameters to results. Through the analysis and research above, visualization quality has been improved.