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1. (WO2016097919) GAZE TRACKING SYSTEM WITH CALIBRATION IMPROVEMENT, ACCURACY COMPENSATION, AND GAZE LOCALIZATION SMOOTHING

Pub. No.:    WO/2016/097919    International Application No.:    PCT/IB2015/059390
Publication Date: Fri Jun 24 01:59:59 CEST 2016 International Filing Date: Tue Dec 08 00:59:59 CET 2015
IPC: G06F 3/01
A61B 3/113
Applicants: KONINKLIJKE PHILIPS N.V.
Inventors: LU, Kongkuo
QIAN, Yuechen
Title: GAZE TRACKING SYSTEM WITH CALIBRATION IMPROVEMENT, ACCURACY COMPENSATION, AND GAZE LOCALIZATION SMOOTHING
Abstract:
In a gaze-tracking system, localized error correction may be applied. The display area may be partitioned into error-correction zones, and each zone may have its own error correcting parameters or function. Calibration points may be defined for each of these zones, and the correction parameters or function within each zone may be dependent upon the observed errors as the user views each calibration point associated with the zone. In like manner, the function applied to smooth the determined gaze point to reduce noise may also be localized by basing its characteristics on the noise exhibited at each calibration point associated with defined noise-calibration zones. The error correcting function and/or the noise smoothing function may be selected based on the requirements of the particular application that receives the corrected and smoothed gaze location.