Gaze tracking based on similarity between spatial triangles and two-stage calibration

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Gaze tracking based on similarity between spatial triangles and two-stage calibration

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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).

Inspec keywords: cameras; human computer interaction; computer vision; object tracking; calibration

Other keywords: gaze estimation error; gaze tracking; head movement range; spatial triangles; two-stage calibration; human-computer interaction

Subjects: Computer vision and image processing techniques; Optical, image and video signal processing; Measurement standards and calibration; User interfaces

References

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      • Yang, C.X., Sun, J.D., Liu, J., Yang, X.H., Wang, D.C.S., Liu, W.: `A gray difference-based pre-processing for gaze tracking', Proc. Int. Conf. Signal Processing, 2010, p. 1293–1296, Vol. 2.
http://iet.metastore.ingenta.com/content/journals/10.1049/el.2011.0091
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