眼震检测中眼动曲线拟合方法研究  

A Study of Curve Fitting Methods Used in Eye-Movement Detecting System

作　　者：袁小庆[1] 史仪凯[1] 王萑[1] 

机构地区：[1]西北工业大学机电学院,陕西西安710072

出　　处：《计算机仿真》2009年第2期345-348,共4页Computer Simulation

基　　金：国家自然科学基金(50275125);航空科学基金(2007ZE53050);陕西省科技计划课题(2005K16-G7(4))

摘　　要：眼震检测是判断眩晕的一种重要方法,获取瞳孔位置波动曲线是眼震检测的主要内容,为了建立眼震检测中瞳孔位置波动曲线数学模型,采用最小二乘拟合与傅立叶级数拟合两种方法进行数据处理。通过对比,用Matlab中的Cftool工具箱对瞳孔位置曲线进行傅立叶级数拟合的效果更好。实验证明,方法对眼动曲线建立的数学模型,能准确反映出瞳孔位置的实时变化情况。拟合结果为眩晕判定提供了重要依据,对今后的眼震研究具有一定的指导意义。Nystagmus detecting is an important method of vertigo judgment, and getting the wave of pupil fluctuation is the major content of nystagmus detecting. To set up mathematic model for the wave of pupil fluctuation in nystagmus detecting experiment, least square method fitting and Fourier progression fitting are used for data processing. Contrasting the two methods, the effect of Fourier progression fitting set up by Cftool of Matlab is better. As confirmed in the experiment, the mathematic model set up by this method can reflect the movement of the pupil exactly and in real time. The result of the curve fitting provides important evidence for vertigo judgment, and is of instructional significance to future research of nystagmus.

关 键 词：眼震 瞳孔检测 曲线拟合 傅立叶级数 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]