基于CUDA的线积分卷积矢量场并行可视化方法
汤慧仪;张俊达
【期刊名称】《电脑知识与技术》 【年(卷),期】2016(012)012
【摘要】As a texture based vector field visualization algorithm,LIC algorithm can display the complete picture of vector field in the form of image, and show the details of the changes. Aiming at the problem of low efficiency of LIC algorithm for render-ing,a parallel liner integral convolution algorithm for vector field visualization based on CUDA is proposed. The streamline gen-eration and texture value calculation in the traditional LIC algorithm are parallel reconstructed. Using GPU to calculate the streamline of all pixels by numerical integration method,and parallel simultaneously computing all pixel values corresponding to the output image texture. The rendering efficiency is significantly improved. In the end, the experiment validates the effective-ness of proposed algorithm.%作为一种基于纹理的矢量场可视化方法，线积分卷积算法能够以纹理图像的形式展示矢量场全貌，并能够较好地展现细节变化，因而是一类行之有效的方法，但计算量巨大，绘制效率较低。针对此问题，提出一种基于CUDA的线积分卷积矢量场并行可视化方法，利用并行计算架构的优势以及图形处理器的快速计算能力，较好地提高矢量场的可视化效率。首先对线积分卷积算法并行化的可行性进行分析，然后针对其中的流线生成和纹理生成两个关键阶段进行并行化改造，将计算密集型的部分转移
基于CUDA的线积分卷积矢量场并行可视化方法
