A High Accurate Camera Calibration Approach lor 3-D Computer Vision System

Fan Hong; Yuan Baozong

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A High Accurate Camera Calibration Approach lor 3-D Computer Vision System

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- A High Accurate Camera Calibration Approach lor 3-D Computer Vision System
- Acta Electronica Sinica Issue 11, Pages: 12-18(1992)
- 作者机构：
  
  1. 北方交通大学信息科学研究所
  2. 北方交通大学信息科学研究所北京100044
- 作者简介：
- 基金信息：
- DOI：
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- Published：1992
- 稿件说明：
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[1]范洪,袁保宗.3-D计算机视觉系统的高精度摄象机定标算法—DLTEAⅡ[J].电子学报,1992(11):12-18.

Fan Hong, Yuan Baozong. A High Accurate Camera Calibration Approach lor 3-D Computer Vision System[J]. Acta Electronica Sinica, 1992, (11): 12-18.
[1]范洪,袁保宗.3-D计算机视觉系统的高精度摄象机定标算法—DLTEAⅡ[J].电子学报,1992(11):12-18. DOI：

Fan Hong, Yuan Baozong. A High Accurate Camera Calibration Approach lor 3-D Computer Vision System[J]. Acta Electronica Sinica, 1992, (11): 12-18. DOI：

摘要

本文在分析计算机视觉系统中摄象机几何模型的基础上

修正了光学镜头畸变模型使之与数字成象系统相配合

提出了一个非常适合于3—D计算机视觉系统的通用高精度摄象机定标方法:增强型直接线性变换—误差拟合算法（DLTEAⅡ）.实验表明

使用普通CCD摄象机的立体视觉系统经DLTEAⅡ定标后

在300mm×200mm视场和0.8m～0.9m深度范围内其三维定位的绝对精度分别为dx<0.03mm

dy<0.04mm和dz<0.09mm

相对精度为视场大小和深度的1/10000.本文所提出的定标方法在三维计算机视觉、智能机器人、工业自动化生产、近景摄影测量和军事等领域有着广泛的应用前景.

Abstract

The paper presents a new high accurate camera calibration approach for 3-D computer vision system-named as DLTEAI （Direct Linear Transformation-Error Approximation I）. To overcome shortcomings of digital image acquisition

we introduce a modified lens distortion model and a quadratic polynomials of system error approximation based on the posterior compensation in the DLTEAI approach. The stereo vision system with off-the-shelf CCD or TT cameras calibrated by DLTEAI has an average relative accuracy of 1/10000 over the field of view （300mm by 200mm） and the depth （0.8m-0.9m）. The absolute location errors are less than 0.03mm

0.04mm and 0.09mm in x

y and z directions respectively.

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