Optimal subpixel interpolation in particle image velocimetry

被引：71
|
作者：
Roesgen, T [1 ]
机构：
[1] ETH Zentrum, Swiss Fed Inst Technol, Inst Fluid Dynam, CH-8092 Zurich, Switzerland
来源：
EXPERIMENTS IN FLUIDS | 2003年 / 35卷 / 03期
关键词：
D O I：
10.1007/s00348-003-0627-8
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
It is shown that among the different techniques for particle image velocimetry subpixel interpolation, only the 'sinc'-kernel creates an optimal result in that it completely suppresses spurious spectral sidelobes. An efficient method is introduced for the computation of the subpixel-accurate correlation peak position without any systematic errors. A connection is made with the kernel-dependent observation of the peak-locking phenomenon.
引用
收藏
页码：252 / 256
页数：5
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