改进的精密测角法标定面阵摄像机参数

赵振庆; 叶东; 张鑫; 陈刚

doi:10.3788/OPE.20162407.1592

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改进的精密测角法标定面阵摄像机参数

现代应用光学 | 更新时间：2020-08-13

- 改进的精密测角法标定面阵摄像机参数
- Calibration of area-array camera parameters based on improved exact measuring angle method
- 光学精密工程 2016年24卷第7期页码：1592-1599
- 作者机构：
  
  哈尔滨工业大学电气工程及自动化学院, 黑龙江哈尔滨 15001
- 作者简介：
  
  [ "赵振庆(1983-), 男, 河北张家口人, 2007年、2010年于燕山大学分别获得学士、硕士学位, 主要研究方向为机器视觉、图像处理。E-mail:zzq725@126.com" ]
  叶东(1968-), 男, 湖北武汉人, 博士, 教授, 博士生导师, 1990年、1995年和1999年于哈尔滨工业大学分别获学士、硕士和博士学位, 主要从事基于串/并联结构的坐标测量理论和技术、双目/单目视觉坐标测量理论和技术等方向的研究。E-mail:yedong@hit.edu.cn E-mail:yedong@hit.edu.cn
- 基金信息：
  
  国家自然科学基金资助项目(51075095);黑龙江省自然科学基金资助项目(E201045)
- DOI：10.3788/OPE.20162407.1592
  中图分类号： TP391.4;TB92
- 收稿日期：2016-01-08，
  
  录用日期：2016-3-17，
  
  纸质出版日期：2016-07
- 稿件说明：
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赵振庆, 叶东, 张鑫, 等. 改进的精密测角法标定面阵摄像机参数[J]. 光学精密工程, 2016,24(7):1592-1599.

Zhen-qing ZHAO, Dong* YE, Xin ZHANG, et al. Calibration of area-array camera parameters based on improved exact measuring angle method[J]. Optics and precision engineering, 2016, 24(7): 1592-1599.
赵振庆, 叶东, 张鑫, 等. 改进的精密测角法标定面阵摄像机参数[J]. 光学精密工程, 2016,24(7):1592-1599. DOI： 10.3788/OPE.20162407.1592.

Zhen-qing ZHAO, Dong* YE, Xin ZHANG, et al. Calibration of area-array camera parameters based on improved exact measuring angle method[J]. Optics and precision engineering, 2016, 24(7): 1592-1599. DOI： 10.3788/OPE.20162407.1592.

摘要

改进了用于标定线阵摄像机的传统精密测角算法，标定用于面阵摄像机的参数。该算法利用两束平行光之间的夹角和投影在摄像机上图像点之间的对应关系，在给定一个预测摄像机主点的基础上计算它和实际主点之间的偏差以及摄像机焦距。分析了图像特征提取误差对于平行光夹角测量精度的影响，并给出一种基于平行光夹角误差最小的最优估计，从而进一步提高摄像机内部参数的标定精度。通过仿真实验分析了图像特征提取精度和平行光夹角测量精度对摄像机参数标定精度的影响。结果显示，当图像特征提取精度为0.1 pixel，二维转台精度为0.5"时，主点标定精度可以达到0.56 pixel，焦距标定精度可以达到0.06 mm。利用精度为0.5"的二维转台对摄像机参数进行了实际标定，通过分析像点和标定结果所计算的平行光夹角和实际测量的平行光夹角的误差，可知本文算法的误差是经典精密测角法的68.6%，由此证明该算法对于面阵摄像机参数标定具有更好的结果。

Abstract

An improved exact measuring angle algorithm is proposed for parameter calibration of area array cameras. Based on a given estimated principal point of camera

the algorithm calculated deviation between the estimated and actual principal points and focal distance of the camera by using the corresponding relationship between intersection angle of two beams of parallel lights and image point of projection on the camera. The influence of image feature extraction error on intersection angle measurement accuracy of parallel lights was analyzed and an optimal estimation based on the minimum intersection angle error of parallel lights was employed so as to promote the calibration accuracy of internal parameter of the camera. Simulation experiment was conducted to analyze the influence of image feature extraction accuracy and intersection angle measurement accuracy of parallel lights on camera parameter calibration precision. The results show that the calibration accuracies of principal point and focal distance can reach 0.56 pixel and 0.06 mm respectively when image characteristics extraction accuracy is 0.1 pixel and two-dimensional rotary table accuracy is 0.5". An two-dimensional rotary table with accuracy reaching 0.5" is used for parameter calibration of the camera. In comparison of intersection angle error of parallel light calculated based on image point and calibration results with the calibration result

the error of the improved algorithm is 68.6% of the classic exact measuring angle method. This proves that the proposed algorithm has a better accuracy in parameter calibration of area array camera.

关键词

Keywords

references

刘书桂, 姜珍珠, 董英华, 等.采用移动光靶标的分区域相机标定[J].光学精密工程, 2014, 22(2):259-265.

LIU SH G, JIANG ZH ZH, DONG Y H, et al.. Sub-regional camera calibration based on moving light target[J]. Opt. Precision Eng., 2014, 22(2):259-265.(in Chinese)

叶峰, 王敏, 陈剑东, 等.共面点的摄像机非线性畸变校正[J].光学精密工程, 2015, 23(10):2962-2970.

YE F, WANG M, CHEN J D, et al.. Camera nonlinear distortion correction based on coplanar points[J]. Opt. Precision Eng., 2015, 23(10):1962-1970.(in Chinese)

朱伟东, 曹良洪, 梅标, 等.利用圆心不对称投影精确标定工业相机[J].光学精密工程, 2014, 22(8):2267-2273.

ZHU W D, CAO L H, MEI B, et al.. Calibration of industrial cameras using asymmetric circle center projection[J]. Opt. Precision Eng., 2014, 22(8):2267-2273.(in Chinese)

黄风山, 钱惠芬.三坐标测量机驱动的摄像机标定技术[J].光学精密工程, 2010, 18(4):952-957.

HUANG F SH, QIAN H F. Camera calibration technology driven by three-coordinate measuring machine[J]. Opt. Precision Eng., 2010, 18(4):952-957.(in Chinese)

王子辰, 戴明, 李刚, 等.基于虚拟立体靶标的线性相机标定与分析[J].红外与激光工程, 2014, 43(3):902-907.

WANG Z CH, DAI M, LI G, et al.. Calibration and analysis of line-scan camera based on virtual stereo pattern[J]. Infrared and Laser Engineering, 2014, 43(3):902-907.(in Chinese)

吴国栋, 韩冰, 何喣, 等.精密测角法的线阵CCD相机几何参数实验室标定方法[J].光学精密工程, 2007, 15(10):1628-1632.

WU G D, HAN B, HE X. Calibration of geometric parameters of line-array CCD camera based on exact measuring angle in lab[J]. Opt. Precision Eng., 2007, 15(10):1628-1632.(in Chinese)

刘伟毅, 贾继强, 丁亚林, 等.精密测角法中测量误差对内方位元素标定的影响[J].红外与激光工程, 2009, 38(4):705-709.

LIU W Y, JIA J Q, DING Y L, et al.. Measurement error impact on intrinsic parameters calibration in precise angle measurement method[J]. Infrared and Laser Engineering, 2009, 38(4):705-709.(in Chinese)

LIU W Y, DING Y L, JIA J Q. Factor analysis for impactions on principal point accuracy in exact measuring angle method[C].International Symposium on Photonics and Optoelectronics, Chengdu, China, 2010.

刘波, 贾继强, 丁亚林.基于测角法的CCD航测相机实验室几何标定[J].激光与红外, 2010, 40(3):298-301.

LIU B, JIA J Q, DING Y L. Geometric calibration with angle measure for CCD aerial photogram metric camera in laboratory[J]. Laser & Infrared, 2010, 40(3):298-301.(in Chinese)

刘伟毅, 丁亚林, 贾继强, 等.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 W Y, DING Y L, JIA J Q, et al.. Calibration of inner orientation elements for camera by means of star points[J]. Opt. Precision Eng., 2010, 18(9):2086-2093.(in Chinese)

远国勤, 丁亚林, 惠守文, 等.基于精密测角法的测绘相机分组渐进标定算法[J].光学学报, 2012, 32(1):0112005.

YUAN G Q, DING Y L, HUI SH W, et al.. Grouped approach algorithm for mapping camera calibration based on method of exact measuring angle[J]. Acta Optica Sinica, 2012, 32(1):0112005.(in Chinese)

RYUSUKE S, YASUSHI Y. Accurate calibration of intrinsic camera parameters by observing parallel light pairs[C].International Conference on Robotics and Automation, Pasadena, CA, USA, 2008:1390-1397.

姚志军, 韩秋蕾.激光制导动靶照射精度测量系统[J].液晶与显示, 2014, 29(6):1124-1130.

YAO ZH J, HAN Q L. Laser radiation accuracy measurement system of moving target in laser guidance[J]. Chinese Journal of Liquid Crystals and Displays, 2014, 29(6):1124-1130.(in Chinese)

赵婧鑫, 周富强.小尺寸光斑中心的高精度定位算法[J].红外与激光工程, 2014, 43(8):2690-2693.

ZHAO J X, ZHOU F Q. High precision center location algorithm of small scale focal spot[J]. Infrared and Laser Engineering, 2014, 43(8):2690-2693.(in Chinese)

王林波, 王延杰, 邸男, 等.基于几何特征的圆形标志点亚像素中心定位[J].液晶与显示, 2014, 29(6):1003-1009.

WANG L B, WANG Y J, DI N, et al.. Subpixel location of circle target center based on geometric features[J]. Chinese Journal of Liquid Crystals and Displays, 2014, 29(6):1003-1009.(in Chinese)

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