摘要
数码相机的外部参数标定是应用计算机视觉进行现场测量和图像处理的关键技术。提出一种基于圆形靶标的数码相机外部参数标定算法,首先提出一种用于估计靶标上圆的圆心在该相机像平面的像坐标的迭代学习算法,在此基础上,利用已知的数码相机内部参数和成像几何模型计算出数码相机的外部参数。实验结果表明算法具有较高的精度和良好的稳定性。
External parameters calibration for digital camera is a key technology for field measurement and image processing while using computer vision. An external parameters calibration algorithm for digital camera using circular target was presented. Firstly, iterative learning approximation algorithm was designed for getting the coordinates of circle image＇s center on the target. On this basis, external parameters of digital camera could be calculated using known intrinsic parameters of digital camera and imaging geometric model. The experimental results indicate that the presented algorithms in this paper have high accuracy and good stability.
出处
《计算机应用》
CSCD
北大核心
2009年第7期1933-1936,共4页
journal of Computer Applications
基金
湖南省教育厅优秀青年基金资助项目(08B014)
湖南省科技厅科技计划项目(2008GK3134)
关键词
数码相机
外部参数标定
圆形靶标
成像几何模型
digital camera
external parameters calibration
circular target
imaging geometric model
