Title :
Gaze tracking based on similarity between spatial triangles and two-stage calibration
Author :
Sun, Jian ; Yang, Chao ; Liu, Jiangchuan ; Yang, Xu
Author_Institution :
Sch. of Inf. Sci. & Eng., Shandong Univ., Jinan, China
Abstract :
Gaze tracking is an important technique for human-computer interaction. A novel gaze tracking method with two lights and one camera is proposed, in which the similarity between spatial triangles is utilised to estimate the point-of-gaze, and a two-stage calibration is used to improve the estimation precision. Experiments show this method has low complexity, and its average gaze estimation error is about 0.7306° with a head movement range of 20 × 17 × 10 cm (width-height-depth).
Keywords :
calibration; cameras; computer vision; human computer interaction; object tracking; gaze estimation error; gaze tracking; head movement range; human-computer interaction; spatial triangles; two-stage calibration;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.0091
