| 基于单目视觉的单图标定算法 |
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| 引用本文： | 李杭龙,杨涛,李济泽.基于单目视觉的单图标定算法[J].福建工程学院学报,2022,0(6):573-579. |
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| 作者姓名： | 李杭龙 杨涛 李济泽 |
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| 作者单位： | 福建工程学院福建省智能加工技术及装备重点实验室（福建工程学院） |
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| 摘 要： | 为了满足现代工业生产中精度要求高、操作快捷的要求，提出基于单目视觉的单图标定算法。通过采集一张棋盘格标定板图像，精确提取棋盘格角点坐标，使用仿射变换得到像素坐标系和世界坐标系的仿射变换矩阵，分析Halcon仿射变换矩阵和张氏标定法相机模型的对应关系，得到详细的相机内参，再对图像进行畸变矫正，得到像素当量。多次Halcon实验结果表明，提出的算法与其他方法相比，操作更加快捷，标定结果标准差可控制在0.02 mm 以内，能够满足现代工业生产需要。
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| 关 键 词： | 单目视觉 单图标定 仿射变换 畸变矫正 Halcon |
Research on single image calibration algorithm based on monocular vision |
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| LI Hanglong,YANG Tao,LI Jize.Research on single image calibration algorithm based on monocular vision[J].Journal of Fujian University of Technology,2022,0(6):573-579. |
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| Authors: | LI Hanglong YANG Tao LI Jize |
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| Affiliation: | Fujian Key Laboratory of Intelligent Machining Technology and Equipment |
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| Abstract: | In order to meet the requirement of high accuracy and fast operation in modern industrial production, a single image identification algorithm based on monocular vision was proposed. By collecting a checkerboard calibration board image, accurate extraction of checkerboard corner coordinates, affine transformation matrix of pixel coordinate system and world coordinate system was obtained by affine transformation. By analyzing the corresponding relationship between Halcon affine transformation matrix and Zhang’s calibration camera model, detailed camera internal parameters were obtained. Finally, the pixel equivalent was obtained by distortion correction of the image. Halcon experiments show that the proposed method is faster than other methods, and the standard deviation of calibration results can be controlled within 0.02 mm, which can meet the needs of modern industrial production. |
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| Keywords: | monocular vision single graph calibration affine transformation distortion correction Halcon |
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