An Approach to Real-Time Visualization of PIV Method with FPGA
An Approach to Real-Time Visualization of PIV Method with FPGA
复制标题
一种基于FPGA的PIV方法实时可视化方法
DOI：
10.1007/3-540-44687-7_63
复制
发表时间：
2001
期刊：
影响因子：
3.7
通讯作者：
Atsushi Kawase
中科院分区：
文献类型：
--
作者：
T. Maruyama;Y. Yamaguchi;Atsushi Kawase
粒子图像速度法（PIV）是一种成像和分析流中的方法，在PIV方法中，将磁场中的小窗户与另一个图像中的窗户周围的区域进行了比较（时间t） T+ΔT），与窗口最相似的部分是使用二维互相关函数搜索的，我们显示我们可以通过一个最新的Xilinx FPGA来实现PIV方法的实时可视化，通过组合移位寄存器数组和分布式RAM数组，我们可以非常有效地实现对二维交叉相关功能的并行处理。
Particle image velocimetry (PIV) is a method of imaging and analyzing field of flows. In the PIV method, small windows in an image of the field (time t) are compared with areas around the windows in the another image of the field (time t+Δt), and the most similar part to the windows are searched using two dimensional cross-correlation function. The amount of computations in the function is very large, and furthermore, parallel processing of the function requires complex shift operations. In this paper, we show that we can achieve real-time visualization of PIV method with one PCI board with one latest Xilinx FPGA. By combining shift register array and distributed RAM array, we can realize parallel processing of the two dimensional cross-correlation function very efficiently.