光学成像系统中非线性畸变的数字校正方法分析

Analysis of Digital Correction Methods for Nonlinear Distortion in Optical Imaging System

当前,广角类光学成像系统得到广泛应用,人们要采用数字图像处理技术实现镜头非线性畸变的快速处理,提高信息获取的准确性和速度。基于此,本文分析了系统非线性畸变的产生原因,提出根据畸变图像圆点位置关系实现数字插值校正的方法。通过试验分析可知,该方法能够通过转换各像素坐标获得校正图像,实现图像快速、有效校正。

Currently,wide-angle optical imaging systems are widely used,and people need to use digital image pro⁃cessing technology to achieve rapid processing of lens nonlinear distortion and improve the accuracy and speed of in⁃formation acquisition.Based on this,this paper analyzed the causes of system nonlinear distortion,and proposed a method of digital interpolation correction based on the position relationship of the distorted image dots.Through ex⁃perimental analysis,it can be known that this method can obtain a corrected image by transforming the coordinates of each pixel,and achieve rapid and effective image correction.