借助于星点标定相机的内方位元素

刘伟毅; 丁亚林; 贾继强; 刘 波

doi:10.3788/OPE.20101809.2086

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借助于星点标定相机的内方位元素

信息科学 | 更新时间：2020-08-12

- 借助于星点标定相机的内方位元素
- Calibration of inner orientation elements for camera by means of star points
- 光学精密工程 2010年18卷第9期页码：2086-2093
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
  2. 中国科学院研究生院北京,100039
- 作者简介：
- 基金信息：
  
  国家863高技术研究发展计划资助项目(No.2007AA701203)()
- DOI：10.3788/OPE.20101809.2086
  中图分类号： V447.3
- 收稿日期：2009-10-13，
  
  修回日期：2009-12-28，
  
  网络出版日期：2010-09-29，
  
  纸质出版日期：2010-09-20
- 稿件说明：
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刘伟毅, 丁亚林, 贾继强, 刘波. 借助于星点标定相机的内方位元素[J]. 光学精密工程, 2010,18(9): 2086-2093

LIU Wei-yi, DING Ya-lin, JIA Ji-Qiang, LIU Bo. Calibration of inner orientation elements for camera by means of star points[J]. 光学精密工程, 2010,18(9): 2086-2093
刘伟毅, 丁亚林, 贾继强, 刘波. 借助于星点标定相机的内方位元素[J]. 光学精密工程, 2010,18(9): 2086-2093 DOI： 10.3788/OPE.20101809.2086.

LIU Wei-yi, DING Ya-lin, JIA Ji-Qiang, LIU Bo. Calibration of inner orientation elements for camera by means of star points[J]. 光学精密工程, 2010,18(9): 2086-2093 DOI： 10.3788/OPE.20101809.2086.

摘要

为满足单个或一批次测绘相机的标定

提出了一种利用已知坐标值的星点对测绘相机进行标定的方法。介绍了该方法的原理以及计算步骤

给出了实验过程。该方法建立在小孔成像的基础上

通过各个坐标系的相互转换

建立起星点坐标和像素坐标之间的联系

以此求解相机内方位元素。与基于平行光管和精密转台的精密测角法相比

该方法不需要昂贵的实验设备

且简化了标定步骤。最后

对标定精度进行了分析

讨论了噪声扰动和已知内方位元素误差对标定结果的影响。分析结果表明

采用该标定方法

相机的主点精度优于3 m(1/3 pixel)

主距精度优于7 m(小于1 pixel)

满足标定精度要求。

Abstract

To implement the single or batch calibrations of mapping cameras

a calibration method to find the inner orientation elements of the camera by star points was presented. The principles and calculation steps of the method were introduced

and the experimental process was described in detail. The method was based on a hole imaging and it established a relationship between celestial coordinate and pixel coordinate by the conversions of different coordinate frames to obtain the inner orientation elements. In comparison to the precision angle measurement method based on the collimator and precision rotating platform

this method greatly simplifies the calibration steps and requires no expensive experimental equipment. Finally

the calibration precision was analyzed

and the effects of noise disturbance and known errors of inner orientation elements on calibration results were discussed. Obtained results indicate that the principal point precision and principal distant precision are better than 3 m(1/3 pixel) and 7 m(1 pixle)

respectively

which meets the requirement of calibration precision.

关键词

Keywords

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