悬浮颗粒两相流图像处理方法  

Image processing of particle suspension two-phase flows

作　　者：潘晓辉[1] 罗锐[1] 杨献勇[1] 穆瑞云[1] 

机构地区：[1]清华大学热能工程系,北京100084

出　　处：《清华大学学报（自然科学版）》2002年第5期680-683,共4页Journal of Tsinghua University(Science and Technology)

摘　　要：利用三维颗粒成像测速 (PIV)技术研究颗粒悬浮两相流中颗粒相速度和相分布 ;用图像采集卡将摄像机拍摄的流动图像实时的存储到计算机中 ;用自行开发的颗粒图像处理及分析软件对其进行图像增强、分割、识别和理解等一系列数字化处理后 ,将每一个颗粒的大小和其中心位置由计算机自动判别。研究了实验各个环节对判别结果的影响 ,开发了可用于颗粒两相流 PIV测量的图像处理软件 ,颗粒识别率达到 85 %以上 ,颗粒中心定位精度达 1～Particle-liquid two-phase flows were measured with three-dimensional particle image velocimetry (PIV) using a TV camera (CCD) to record the flow images which were then digitized by a image-grabber card and stored in a PC. The images were processed using enhancement, segmentation, identification, and image understanding to automatically determine the 3-D positions of all particles in the flow field. Flow image processing software developed for the image processing is given with analysis of several important factors affecting the results.

关 键 词：悬浮颗粒两相流 颗粒成像测速 图像处理 图像识别 相分布 速度分布 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] O359[自动化与计算机技术—计算机科学与技术]