摘要
基于在足够长时间内必有不同大小的泡状流气泡流经光学系统焦平面这一前提,给出了确定流过焦平面的泡状流气泡直径与灰度标准差之间关系的方法.这一问题的解决为下一步泡状流近焦深度内微气泡的识别工作奠定了良好的基础,具有十分重要的意义.
Based on the premise that there must be different size bubbles in bubbly flows pass through the focal plane of optical systems.Within a long enough period of time,the method to determine the relationship between the diameter of bubbles passed through the focal plane and the gray-scale standard deviation was given.The solution for this problem has laid good foundation for identifying the micro-bubbles within the depth near focal plane,which is great significance.
出处
《华北水利水电学院学报》
2010年第6期133-136,共4页
North China Institute of Water Conservancy and Hydroelectric Power
关键词
CCD摄像机
微小气泡
粒径测量
灰度标准差
焦平面
CCD camera
micro-bubble
diameter measurement
gray-scale standard deviation
focal plane
