| 复眼式光学成像系统畸变测量与校正技术研究 |
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| 引用本文： | 李茜,聂亮.复眼式光学成像系统畸变测量与校正技术研究[J].应用光学,2021,42(4):717-722. |
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| 作者姓名： | 李茜 聂亮 |
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| 作者单位： | 西安工业大学 光电工程学院，陕西 西安 710021 |
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| 基金项目： | 陕西省教育厅重点项目（20JY029） |
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| 摘 要： | 复眼式光学成像系统在大视场侦查、图像识别、目标探测等领域较传统单孔径光学系统优势突出，但随着视场的增加，子孔径本身的成像畸变及多个子孔径的安装位置误差引起的畸变会直接影响拼接图像的质量。针对该问题，采用光电测量技术对复眼系统进行畸变测量与校正，生成多模动态电子畸变测量靶标，构建畸变测量校正模型，建立多项式拟合算法，采用最小二乘法获得畸变系数，通过双线性插值法模型对图像进行重建。实验结果表明，校正后的平均相对畸变优于0.1%，满足大视场复眼式光学成像系统的畸变校正和图像拼接的精度要求。
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| 关 键 词： | 复眼式光学成像系统 畸变测量 畸变校正 多项式拟合 |
| 收稿时间： | 2020-11-17 |
Distortion measurement and correction method on compound-eye optical imaging system |
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| Affiliation: | School of Optoelectronic Engineering, Xi’an Technological University, Xi’an 710021, China |
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| Abstract: | The compound-eye optical imaging system features outstanding advantages over traditional single-aperture optical system in large field of view detection, image recognition, and target detection. However, with the increase of the field of view, the image distortion of sub-aperture itself and the distortion caused by installation position error of the multiple sub-aperture will directly affect the quality of mosaic images. To address the problem, the distortion measurement and correction of compound-eye system were carried out by using the photoelectric measurement technology, and the multi-mode dynamic electronic distortion measurement target was generated. Then, the distortion measurement and correction model was constructed, and the polynomial fitting algorithm was established. The least square method was adopted to obtain the distortion coefficient, and the images were reconstructed by using the bilinear interpolation model. The experimental results show that the average relative distortion after correction is better than 0.1%, which can meet the accuracy requirements of distortion correction and image mosaic of compound-eye optical imaging system with large field of view. |
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