摘要
针对日常气象业务的需求,新近研制出一种基于CCD非测量相机的云底高立体测量仪。讨论了此仪器的快速检校方法,并为此设计了一种东、西、南、北、天顶五个方向都有标志点的室内检校场。研究出采用Canny边缘提取、八邻域跟踪和椭圆拟合的自动提取大量标志点的方法以及由此解算仪器参数的高精度技术。
According to the requirements of meteorological routines,a new instrument for measuring cloud base height has recently been developed based on CCD camera.In this paper,a method for fast camera calibration is presented.To demonstrate the fast camera calibration method,a unique indoor control field is built with east,west,south,north and zenith planes.In order for fast calibration,a new method for automatic extraction of mark points is proposed,which is based on Canny＇s edge extraction,eight neighborhood track and eclipse fitting.Furthermore,the techniques for high precise calibration of the instrument are developed.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2011年第5期721-725,共5页
Journal of Liaoning Technical University (Natural Science)
基金
中国气象局气象新技术推广基金资助项目(CMATG2010Z06)
关键词
CCD
云底高
快速检校
室内控制场
CANNY
八邻域跟踪
椭圆拟合
标志点
自动提取
CCD
cloud base height
fast calibration
indoor control field
Canny
eight neighborhood track
eclipse fitting
mark point
automatic extraction
