人眼对标定界面的注视效果研究

通过眼动跟踪实现精确瞄准注视目标,将成为无人武器的重要操控方式.标定是眼动跟踪的重要环节,受人眼观察及眼动生理特性影响,不同的标定界面会使人眼产生不同的注视效果.通过改变标定界面的背景及标定点的颜色、形状、大小等要素,采用最小二乘回归的方法建立视线估计映射模型进行标定,进行5×5均匀分布25点注视测试,对比分析设计的27组标定界面的注视准确度和精密度,选出最佳标定界面,以此研究人眼对标定界面的注视效果.实验结果表明:27组标定界面中1号界面的注视准确度最好(0.69°±0.43°),24号界面的注视精密度最好(0.27°±0.083°);以注视准确度为主、兼顾精密度的准则,1号标定界面为最佳标定界面.

Study on Fixation Effect of Human Eye to Calibration Interface

To aim precisely at the target through eye tracking will become an important control method for unmanned weapons. Calibration is an important part of eye tracking, and different calibration interfaces will produce different fixation effects due to human eye observation and physiological characteristics. By changing the background of the calibration interface and such elements of the fixed point as color, shape, size, and so on, the least-squares regression method was used to establish the line of sight to estimate mapping model calibration, 5×5 evenly distributed 25 points were tested, the fixation accuracy and precision of 27 groups of calibration interfaces were compared and analyzed, and the best calibration interface was selected, to research the human eye fixation effect of calibration interface. The experimental results showed that the fixation accuracy of interface #1 was the best (0.69°±0.43°), and the fixation precision of interface #24 was the best (0.270°±0.083°). According to the criterion of fixation accuracy and precision, calibration interface No. 1 was the best calibration interface.