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Facial Gaze Detection by Estimating Three Dimensional Positional Movements  

Park, Gang-Ryeong (LG 전자기술원)
Kim, Jae-Hui (연세대학교 전기·컴퓨터공학과)
Publication Information
Abstract
Gaze detection is to locate the position on a monitor screen where a user is looking. In our work, we implement it with a computer vision system setting a single camera above a monitor and a user moves (rotates and/or translates) his face to gaze at a different position on the monitor. To detect the gaze position, we locate facial region and facial features(both eyes, nostrils and lip corners) automatically in 2D camera images. From the movement of feature points detected in starting images, we can compute the initial 3D positions of those features by camera calibration and parameter estimation algorithm. Then, when a user moves(rotates and/or translates) his face in order to gaze at one position on a monitor, the moved 3D positions of those features can be computed from 3D rotation and translation estimation and affine transform. Finally, the gaze position on a monitor is computed from the normal vector of the plane determined by those moved 3D positions of features. As experimental results, we can obtain the gaze position on a monitor(19inches) and the gaze position accuracy between the computed positions and the real ones is about 2.01 inches of RMS error.
Keywords
Gaze Detection; camera calibration; parameter estimation; 3D motion estimation;
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Times Cited By KSCI : 1  (Citation Analysis)
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