摘要
本文针对ＰＩＶ技术的直接测量法中图像的可读性和可测性，讨论了从模拟图像到数字图像，最后到粒子像斑中心位置的确定过程中的误差规律；并提出一种称之为粒子像斑定位偏差综合评估的试验方法。该试验提供了一个能较为全面的定量考察ＰＩＶ图像处理系统（包括硬／软件）在整个图像读入及粒子定位计测过程中对真值的偏差的方法。最后。
The paper,which is aimed at the readable and measurable of PIV image with dirtect measurement,discusses the error law in the procedure among analog image acquisition and the central position of a particle spot and proposes a testing method used to estimate positional error of particle spot.The testing method provides a method that determines quantitatively deviation from real value in procedure of particle positional measuerment.Finally ,the testing method is applied to the PIV real time acquiring and processing system which is developed by authors to estimate the positional error of particle spots.
出处
《实验力学》
CSCD
北大核心
1997年第1期98-104,共7页
Journal of Experimental Mechanics
