摘要
激光粒子图像测速技术 (L PIV)是近年发展起来的一种流速测量新技术。本文提出一种新的 PIV粒子图像运动方向查询方法——灰度判别法 ,通过联合灰度统计频数的计算来获得 L PIV粒子图像的速度大小及方向。开发了一套 PIV查询系统 。
Laser Particle Image Velocimetry (LPIV) is a new technique of flow velocity measurement developing recently. This paper presents a new interrogation method called greyness discriminance,which indicate the mean displacement direction of particles by using the unified greyness statisticle frequency of doubleexposure image of LPIV.A set of LPIV interrogation system based on greyness discriminance is developed.Practices testify that the development is successful.
出处
《应用激光》
CSCD
北大核心
2001年第2期95-98,共4页
Applied Laser
基金
国家"攀登计划"(A)资助
关键词
激光检测
粒子图像测速
灰度判别
laser, particle image velocimetry, interrogation method, greyness discriminance
