云底高测量仪的快速检校  

Fast camera calibration of CBH measuring instrument

作　　者：李国胜[1,2,3] 林宗坚[3] 任超锋[3,4] 

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221116 [2]中国石油大学地球资源与信息学院,山东青岛266555 [3]中国测绘科学研究院,北京100039 [4]武汉大学遥感信息工程学院,湖北武汉430079

出　　处：《辽宁工程技术大学学报（自然科学版）》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)

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.

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 

分 类 号：P204[天文地球—测绘科学与技术]