中北大学学报（自然科学版）2025，Vol.46Issue(4)：438-445,8.DOI:10.62756/jnuc.issn.1673-3193.2024.10.0006
基于嵌入式系统的实时瞳孔中心定位算法研究
Research on Real-Time Pupil Center Location Algorithm Based on Embedded System
摘要
Abstract
In order to solve the problem of low accuracy and poor robustness due to the interference of reflected light spot in the positioning of pupil center,this paper presented an algorithm for accurate positioning of pupil center for embedded system.Firstly,the Average of Synthetic Exact Filters(ASEF)was constructed by pre-processing the human eye image with contrast enhancement and marking the central position of the pupil.Next,the average synthetic precision filter was used to determine the location of the monocular pupil,and the binocular pupil was determined by the"three courts and five eyes"face ratio algorithm to realize the coarse positioning of the pupil.Then,taking the coarse positioning coordinates as the center,the region of interest was selected several times for projection operation to reduce the interference of reflected light spots,so as to corrected the pupil center coordinates,and finally achieved the accurate positioning of the binocular pupil center.The fitting ellipse method,Starburst model method and the proposed algorithm were used to detect simulated human eyes and real human eyes.The experimental results show that the proposed algorithm can effectively avoid the interference of reflected light spots on the positioning of pupil center,accurately obtain the central position of pupil,and the running time reaches 0.035 s.The detection error is controlled within 1 pixel.Compared with elliptic fitting method and Starburst model method,the proposed algorithm has better per-formance in detection speed and accuracy,and can meet the practical application requirements of real-time ophthalmic instrument and embedded system deployment.关键词
瞳孔中心定位/平均合成精确滤波器/对比度增强/三庭五眼/投影运算Key words
pupil center positioning/average of synthetic exact filters/contrast enhancement/three courts and five eyes/projection operation分类
计算机与自动化引用本文复制引用
梁金玉,陈燕,王昱杰,张权..基于嵌入式系统的实时瞳孔中心定位算法研究[J].中北大学学报（自然科学版）,2025,46(4):438-445,8.基金项目
山西省基础研究计划项目(202103021224204) （202103021224204）
山西省研究生实践创新研究(2024SJ268) （2024SJ268）
