摘要
在二维 PIV的图像处理中 ,本文从互相关技术出发 ,建立了相应的连续两幅图像之间的粒子对应方法 ,提出了误对应速度向量的判断和消除准则。通过粒子的标定、粒子的对应、误对应粒子速度向量的判断和消除等步骤建立了相应的二维射流的 PIV图像处理方法。利用日本可视化协会 (VSJ)提供的二维射流标准图像的处理 。
On the basis of the theory of similarity the equation for the coefficients of cross correlation was established, the method of particle matching in image sequences was developed, and the criterion used in determining and deleting the spurious velocity vectors was also given. And then the two dimensional cross correlation system of PIV was developed. The standard two dimensional image data for jet flow, which were provided by the Visualization Society of Japan was used to test this system. The results of test show that this system is reliable and suitable for many kind of flows, also it has the merits of high speed of image processing.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2001年第4期399-404,共6页
Chinese Journal of Hydrodynamics
基金
高等学校重点实验室基金资助项目
