摘要
图像的几何畸变广泛存在于应用广角镜头的成像系统,畸变的存在尤其不利于基于图像分析的定量分析领域。针对一个基于图像分析的红外角位置测量系统,提出一种实用广角成像系统几何畸变数字实时校正方法,阐述其畸变参数的标定方法,图像的空间变换和灰度插值方法,基于实时性要求,给出畸变校正的算法步骤,实验表明,此广角成像系统几何畸变数字实时校正方法有效提高了角位置测量系统的测量精度,并具有一定的实时性能。
Geometry distortion occurred widely in wide-angle optical imaging system. It is especial disadvantageous to the quantitative analysis based on image analysis technique. In this paper, a real time digital distortion correction method of wide-angle imaging system is presented, and the methods of distortion parameter scale, the spatial transform of image and gray scale value are clarified. In order to meet the real time performance, algorithmic steps are detailed. The results show that the real time digital distortion correction method of wide-angle imaging system has improved the measurement precision of angular position measurement system, and its run time in a DSP compute platform meet the requirements of general real time system.
出处
《红外技术》
CSCD
北大核心
2006年第10期571-575,共5页
Infrared Technology
关键词
畸变校正
图像处理
广角成像系统
distortion correction
image processing
wide-angle imaging system
