普通数码相机三种检校方法的量测精度评价  

Measurement Accuracy Evaluation on Three Calibration Methods of Common Digital Cameras

作　　者：陈舒[1] 李浩[1] 黄河 

机构地区：[1]河海大学地球科学与工程学院,南京210098 [2]浙江省测绘科学技术研究院,杭州310012

出　　处：《遥感信息》2012年第5期73-76,共4页Remote Sensing Information

基　　金：国家自然科学基金资助项目(资助号:51079053);"十一五"国家科技支撑计划项目(项目编号:2008BAB29B01)

摘　　要：普通数码相机常用的检校方法存在参数解算不稳定,或对控制场要求高,或实施难度大等不足。本文通过不同拍摄距离下的量测精度对比实验,依据控制场布设难度、检校计算稳定性以及量测应用精度等3方面指标,分析评价普通数码相机3种检校方法的特性。研究结果表明:光束法适用于精密控制条件下的相机检校,但解算的稳定性欠佳;PTR方法的检校精度与光束法相当,且计算稳定性较高;MSC方法适用于小型平面控制下的检校,量测精度能满足一般的工程量测需求。The traditional calibration method of common digital cameras has many shortcomings,such as unstable calculation of parameters,high requirement for control fields,and difficulties of implementation.This paper analyzes and evaluates the features of three calibration methods by conducting a series of experiments.In general,the most remarkable features are the difficulty of the control field arrangements,calibration calculation stability and measurement accuracy.Comparative results indicate that the calculation stability of the bundle calibration method is not that good,unless under a precise control condition;the PTR method can achieve the same accuracy and higher stability;the MSC method can be adopted when under a miniature control field,and its measurement accuracy can also meet the needs of the general quantities.

关 键 词：普通数码相机 检校方法 评价 量测精度 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]