CAJ | 학술논문

探讨了一种基于视频图像的高精度头部受限式眼动仪。在测量凝视点的过程中，被测对象将下颌放在支架上并保持头部不动，同时用摄像机拍摄其某一只眼睛的图像。根据瞳孔和普尔钦亮斑在眼部图像中的相对位置，确定被测对象在计算机显示器上的凝视点坐标。文中不仅给出了凝视点测量数学模型，还给出了瞳孔和普尔钦亮斑的识别方法。为了识别瞳孔和普尔钦亮斑，首先将眼部图像转换为二值图像，然后采用F．Chang等人提出的方法标记二值图像中的每个团块。在此基础上，根据各团块的面积和形状分别识别眼部图像中的瞳孔和普尔钦亮斑。文中也给出了部分实验结果，实验结果表明：实验装置的最大平均测量误差为0．62°。
탐토료일충기우시빈도상적고정도두부수한식안동의。재측량응시점적과정중，피측대상장하합방재지가상병보지두부불동，동시용섭상궤박섭기모일지안정적도상。근거동공화보이흠량반재안부도상중적상대위치，학정피측대상재계산궤현시기상적응시점좌표。문중불부급출료응시점측량수학모형，환급출료동공화보이흠량반적식별방법。위료식별동공화보이흠량반，수선장안부도상전환위이치도상，연후채용F．Chang등인제출적방법표기이치도상중적매개단괴。재차기출상，근거각단괴적면적화형상분별식별안부도상중적동공화보이흠량반。문중야급출료부분실험결과，실험결과표명：실험장치적최대평균측량오차위0．62°。
It discusses a video -based head-fixed eye tracker with high precision .While measuring the coordi-nates associated with eye -gaze, a subject places his mandibular on a support and keeps his head fixed .Mean-while, a camera is used to capture images of the subject's left or right eye .The subject's gaze point fallen on a computer screen can be determined according to the relative position of the pupil and Purkinje reflex in an eye image .This paper presents not only the mathematical model used to measure the coordinates associated with eye gaze , but also the methods used to recognize the pupil and Purkinje reflex in an eye image .To recognize the pupil and Purkinje reflex in an eye image , the eye image is firstly converted into a binary image , and then the method proposed by F .Chang et al is used to label the components in the binary image .On this basis, the pu-pil and Purkinje reflex in an eye image are recognized based on the area and shape of the components .This pa-per also presents some experimental results , and the experimental results show that the maximal average error of the experimental apparatus is 0.62 degree.