| 李莉.OpenCV耦合改进张正友算法的相机标定算法[J].轻工机械,2015,33(4): |
| OpenCV耦合改进张正友算法的相机标定算法 |
| Camera Calibration Algorithm Based on OpenCV and Improved Zhang Zhengyou Algorithm |
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| DOI：I0. 3969/j . issn. 1005 -2895. 2015. 04. 015 |
| 中文关键词: 相机标定 畸变系数 张正友标定算法 OpenCV函数 内参数 |
| 英文关键词:camera calibration distortion coefficient Zhang Zhengyou calibration algorithm OpenCV internal parameters |
| 基金项目:陕西省教育厅项目(No．12JK0931) |
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| 中文摘要: |
| 视觉系统中的相机，由于透镜本身原因，采集到的图像往往会发生一定的畸变，从而影响后期的图像处理精度。
当镜头与图像平面夹角过小，或者标定图像次数过少时，普通标定算法往往存在标定不准，效果不佳等问题。对此，文中
提出了开源计算机视觉库( Open Source Computer Vision Librarv，OpenCV)耦合改进张正友标定算法的的相机定位机制。
首先研究了发生畸变的原因；再对普通张正友算法进行改进，随后通过OpenCV，计算出相机内参数、畸变系数、偏移向量
和旋转向量；最后结合改进后的张正有算法和OpenCV函数编程实现相机标定机制。实验结果显示：与未改进的张正友
标定算法相比，在镜头与图像平面夹角过小，或者标定图像次数过少时，文中机制具有更好的标定效果，在实际工程中具
有较大的应 |
| 英文摘要: |
| For the camera in the visual system. due to the reason of lens. collected images may have certain distortion.
thus affecting image processing precision. When the angle between the lens and image plane is too small, or image
calibration time is less, general calibration algorithm always have the problem of inaccurate calibration, poor effect.
Therefore, improved Open Source Computer Vision Liabrary ( OpenCV) coupling Zhang Zhengyou calibration algorithm
of camera positioning mechanism was proposed. Firstly, the cause of distortion was analyzed. the ordinary Zhang
Zhengyou algorithm was improved, and through OpenCV. the intrinsic parameters of camera. distortion. offset vector
and rotation vector were calculated; finally, with improved Zhang Zhengyou algorithm and OpenCV function
programming, the camera calibration mechanism was realized. The experimental results show that compared with
unmodified Zhang Zhengyou calibration algorithm, for the problem of small angle between the lens and the image plane,
and less times of image calibration, the proposed calibration mechanism has better effect and good application value in
the practical engineering. |
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