OpticsandPrecisionEngineering2007年10月　　　　Oct.2007

文章编号　10042924X(2007)1021628205

第15卷　第10期

　光学精密工程

Vol.15　No.10

精密测角法的线阵CCD相机几何

参数实验室标定方法

吴国栋,韩　冰,何　煦

(中国科学院,摘要:建立了线阵CCD相机几何参数标定系统,行研究。根据标定精度要求,CCD细分技术测得被标,应用最小二乘回归的方法,求得相机几何参数。误差分析结果表明:μm级,相对畸变的标定精度可以优于1×10-4。该方法可以满,具有较高的实际应用价值。关　键　词:相机;几何参数;标定;角度测量中图分类号:V447.3　　文献标识码:A

Calibrationofgeometricparametersofline2array

CCDcamerabasedonexactmeasuringangleinlab

WUGuo2dong,HANBing,HEXu

(ChangchunInstituteofOptics,FineMechanicsandPhysics,Chinese

AcademyofSciences,Changchun130033,China)

Abstract:Acalibrationsystemforgeometriccalibrationofline2arrayCCDcameraisestablished.Theequipment,environment,algorithmbasedonexactmeasuringangleandcalibrationprecisionareinves2tigated.Accordingtotherequirementofcalibrationprecision,equipmentandenvironmentarecon2firmed.Thefieldanglesandimageheightsaretestedbycombininghigh2accuracytwo2dimensionturn2tablewithCCDsubdivisionmeasurement.Finally,thegeometricparametersofthecameraarecalcu2latedbyaleastsquareregressionanalysis.Theanalysisresultsshowthatthecalibrationprecisionofprincipaldistanceandprincipalpointhavereachedmicronlevelandthecalibrationprecisionofrelativedistortionissmallerthan1×10-4.Thismethodcanmeettherequirementsofhighprecisioncalibra2tionofline2arrayCCDandhashigherpracticalapplicationvalue.

Keywords:line2array;CCDcamera;geometricparameter;calibration;anglemeasurement

　　收稿日期:2007206206;修订日期:2007207213.

　　基金项目:国家自然科学基金资助项目(No.60575025)