眼球图像跟踪及视线指示系统的精度测量

Precision measurement and analysis on a video-based eye tracking system

针对市面上眼动仪没有详细的精度测试方案和测试结果的现状,本文探讨了一种基于视频记录法的瞳孔跟踪系统进行详细的精度测试的方法,在自主研发的眼球图像跟踪及视线指示系统(眼动系统)上进行测试,测试内容包括空间分辨率、最小分辨率和注视准确度,其中注视准确度采用九点定标法测量分析.实验数据显示,系统空间分辨率为0.003°,系统最小分辨率小于0.02°;注视准确度结果为0.3°。结果表明该眼动仪具有较高的检测精度,能够达到系统所需的要求。

This paper discusses a detailed precision testing method of video-based eye tracking system.Spatial resolution,minimum resolution and gaze accuracy were done on the eye tracking system.Experimental data shows that the spatial resolution of the eye tracking system is 0.003°,minimum resolution is better than 0.02°,gaze accuracy is 0.3°.The results show that the eye tracking system has high detection accuracy,and can achieve that required by the system requirements.