摘要
人眼瞳孔大小是视觉功效研究中的重要指标,用眼动仪能记录得到瞳孔大小。为了方便分析瞳孔大小的变化规律,需要对测试得到的瞳孔大小数据进行处理。把瞳孔大小数据分为恒定光环境下瞳孔大小测试数据和变化光环境下的瞳孔大小测试数据,分别提出了数据处理方法:对于恒定光环境下的瞳孔大小数据,取各测量数据的算术平均值作为该背景亮度下的瞳孔大小;对于变化光环境下的瞳孔大小数据,先对异常变化数据进行处理,然后用小波变换的方法进行去噪处理,即可得到瞳孔大小随时间变化的平滑曲线。
Pupil size is an important parameter in visual performance studying,and pupil size can be measured with eye tracker. In order to analyzed changing rules of pupil size,testing data of pupil size should be processed. Testing data of pupil size include pupil size under constant lighting environment and pupil size under changing lighting environment. Toward the two kinds of pupil size data,we propose processing methods respectively. To pupil size under constant lighting environment,take the average value of pupil size data as pupil size; to pupil size under changing lighting environment,delete the abnormal data firstly,then process the testing data with wavelet transform,and a smooth curve of pupil size changed with time can be obtained.
出处
《灯与照明》
2017年第3期5-9,共5页
Light & Lighting
基金
国家自然科学基金(51278507
50908240)
关键词
视觉功效
瞳孔大小
数据处理
小波变换
visual performance
pupil size
data process
wavelet transform
