Inspec keywords: pose estimation; gaze tracking; regression analysis; iterative methods; feature extraction

Other keywords: accurate regression-based gaze estimation system; linear mapping functions; low-resolution images; OpenCV iterative algorithm; head pose estimation; EYEDIAP database; normalised eye region-of-interest; feature-based gaze estimation system; calibration phase; ABCCC feature; percentile grey thresholds; average-binary-connected-component-centroid feature

Subjects: Image recognition; Interpolation and function approximation (numerical analysis); Other topics in statistics; Other topics in statistics; Computer vision and image processing techniques; Interpolation and function approximation (numerical analysis)