Lens Distortion Calibration Method for Linear Array Cameras

doi:10.7652/xjtuxb201301003

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Lens Distortion Calibration Method for Linear Array Cameras

更新时间：2025-07-09

- Lens Distortion Calibration Method for Linear Array Cameras
- Vol. 47, Issue 1, Pages: 11-14(2013)
- 作者机构：
  
  西安交通大学机械制造系统工程国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201301003
  CLC： TP206
- Online First：10 January 2013，
  
  Published：2013
- 稿件说明：
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Lens Distortion Calibration Method for Linear Array Cameras[J]. 2013, 47(1): 11-14.
DOI：

Lens Distortion Calibration Method for Linear Array Cameras[J]. 2013, 47(1): 11-14. DOI： 10.7652/xjtuxb201301003.

摘要

为实现线阵相机中镜头畸变的精确标定

提出了一种新的标定模型

并在实际应用中对标定模型进行了简化。根据等间距共线特征点的成像特性

通过比较两种畸变算法的差异

用非线性优化方法实现了镜头畸变参数的标定。实验结果表明

简化模型的标定结果与标准模型的标定结果相一致

标定后相邻特征点之间的距离变得更为均匀

校正后图像的最大形变量不高于0.5像素

校正精度不低于9 μm

与传统的标定方法相比

该标定方法具有较好的稳定性。

Abstract

To accurately calibrate the lens distortion in linear array cameras

a simplified distortion model for the actual application is proposed

and a new corresponding calibration method is suggested to guarantee the stability of calibration results. The imaging characteristic of equidistant collinear feature points is used to calculate the distortion and nonlinear optimization is used to calibrate the distortion parameters. The experiments show that the calibration results of the simplified model are consistent with ones of the normal model. In the calibrated image

the distribution of feature points gets uniform

the maximum distortion is not more than 0.5 pixels and the correction accuracy is not lower than 9 μm. Compared with the traditional calibrations

the newly introduced method has better robustness.

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Keywords

references

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