摘要
在分析儿童眼位偏斜角度时,主要在单一时段内展开自动测量,在此过程中,无法同步处理其他时段的测量目标,导致输出的结果不精准。为此,提出对基于时间序列的儿童眼位偏斜角度自动测量算法的设计与分析。首先,在确定瞳孔的中心点位后,使用Hough变换原理确定反光区域,同步标记出反光点。然后,融合时间序列,建立自回归机制和处理规则,以反光点作为引导,分析斜拉点位与视轴间距之间的变化关系,输出特征描述结果。最后,去除存在的隐斜度,对所描述的结果进行交叉验证,完成对儿童眼位偏斜角度的自动测量计算。实验结果表明:测量过程中,提出方法得到的平均绝对误差基本在1.7°以内,偏斜角度的精准有所提升,体现出优越的性能特征。
When analyzing the angle of eye deviation in children,automatic measurements are mainly carried out within a single time period.During this process,it is impossible to simultaneously process measurement targets from other time periods,resulting in inaccurate output results.To address this issue,this paper proposes the design and analysis of a time-series-based automatic measurement algorithm for the angle of eye deviation in children.First,after determining the central position of the pupil,the Hough transform principle is used to identify the reflection area and mark the reflection points synchronously.Then,time series are integrated to establish an autoregressive mechanism and processing rules.With the reflection points as guidance,the variation relationship between the diagonal pull position and the visual axis distance is analyzed,and the feature description results are output.Finally,the existing phoria degree is eliminated,and cross-validation is performed on the described results to complete the automatic measurement and calculation of the angle of eye deviation in children.The experimental results show that during the measurement process,the mean absolute error obtained by the proposed method is basically within 1.7°,and the accuracy of the deviation angle is improved,reflecting superior performance characteristics.
作者
鱼晓妮
史健博
YU Xiaoni;SHI Jianbo(The First Affiliated Hospital of Air Force Medical University,Xi’an 710032,China)
出处
《国外电子测量技术》
2025年第11期288-292,共5页
Foreign Electronic Measurement Technology
关键词
时间序列
儿童眼位
偏斜角度
自动测量
算法设计
角度偏转
time series
Children's eye position
deviation angle
automatic measurement
algorithm design
angle deviation
