面向电脑验光仪的瞳孔中心快速定位方法  

Rapid Pupil Center Positioning Method for Computer Refractive Devices

作　　者：刘安 杜鲁梅 LIU An;DU Lu-mei(School of Physics&Electronic Science,Changsha University of Science&Technology,Changsha 410000,China)

机构地区：[1]长沙理工大学物理与电子科学学院,湖南长沙410000

出　　处：《电脑与信息技术》2025年第1期92-96,共5页Computer and Information Technology

摘　　要：针对Hough圆变换和最小二乘法椭圆拟合算法在进行瞳孔中心定位时,存在定位速度慢和鲁棒性差的问题,提出了一种改进的椭圆拟合方法,以实现瞳孔中心的快速准确定位。该方法首先采用改良后的最大类间方差法(OTSU)对瞳孔区域进行分割,然后提取瞳孔区域的边缘像素点,最后利用改进的椭圆拟合算法进行拟合,得到瞳孔中心坐标。实验结果表明,所提方法定位速度快、鲁棒性强,可应用于电脑验光仪中实现瞳孔中心的快速和准确定位。The issues of slow positioning speed and poor robustness in pupil center localization using the Hough circle transform and least squares ellipse fitting algorithms were addressed by proposing an improved ellipse fitting method for rapid and accurate pupil center localization.This method first employs an enhanced OTSU’s method to segment the pupil region,then extracts the edge pixels of the pupil region,and finally utilizes the improved ellipse fitting algorithm to fit and obtain the pupil center coordinates.Experimental results demonstrate that proposed method offers swift positioning speed and strong robustness,making it suitable for computer optometry applications requiring fast and accurate pupil center localization.

关 键 词：瞳孔中心定位 电脑验光仪 椭圆拟合 快速定位 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]