| 基于仿射变换和透视投影的摄像机镜头畸变校正方法 |
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| 引用本文： | 刘涌,黄丁发,刘志勤,贾渊.基于仿射变换和透视投影的摄像机镜头畸变校正方法[J].四川建材学院学报,2010(3):76-81. |
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| 作者姓名： | 刘涌 黄丁发 刘志勤 贾渊 |
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| 作者单位： | [1]西南科技大学计算机科学与技术学院,四川绵阳621010 [2]西南交通大学土木工程学院,四川成都610031 |
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| 基金项目： | 国家863计划资助项目（2008AA10Z211） |
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| 摘 要： | 依照摄像机成像过程,提出了一种方便快捷的摄像机镜头畸变精确校正方法。基于逆向摄像机镜头校正模型、仿射变换和透视变换,推导了从标准靶标图像坐标到理想图像坐标之间的精确函数关系,采用最小二乘估计对畸变参数求解,利用双线性插值法还原理想图像,并给出了详细的实验过程和实验结果。结果表明,该方法具有对实验条件要求低、算法运行速度快、校正结果精确等特点,适用于自动实时校正环境。
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| 关 键 词： | 非线性畸变 仿射变换 透视投影 双线性插值 校正 摄像机 |
Distortion Correction Method of Camera Lens Based on Affine Transformation and Perspective Projection |
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| Authors: | LIU Yong HUANG Ding-fa LIU Zhi-qin JIA Yuan |
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| Affiliation: | 1.School of Computer Science and Technology,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China;2.School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,Sichuan,China) |
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| Abstract: | A convenient and effective distortion correction method of camera lens was put forward following the imaging process.Based on anti-correction model of camera lens,affine transformation and perspective projection,this article induced the precise functional relation between planar coordinates in standard target board and ideal image,resolved the distortion parameter according to least squares estimate,restored ideal image with bilinear interpolation,and gives the experiment process and results in detail.Experiment indicates that this method can be used in real-time or automatic environment for it has the following features： convenient,rapid,precise,etc. |
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| Keywords: | Non-linear distortion Affine transformation Perspective projection Bilinear interpolation Correction Camera |
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