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Titolo:
Gaze determination via images of irises
Autore:
Wang, HG; Sung, E;
Indirizzi:
Nanyang Technol Univ, Sch Elect & Elect Engn, Div Instrumentat & Controls,Singapore 639798, Singapore Nanyang Technol Univ Singapore Singapore 639798 gapore 639798, Singapore Nanyang Technol Univ, Sch Elect & Elect Engn, Ctr Signal Proc, Singapore 639798, Singapore Nanyang Technol Univ Singapore Singapore 639798 gapore 639798, Singapore
Titolo Testata:
IMAGE AND VISION COMPUTING
fascicolo: 12, volume: 19, anno: 2001,
pagine: 891 - 911
SICI:
0262-8856(20011001)19:12<891:GDVIOI>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
FEATURE-EXTRACTION; EYE; DEFORMATION; RECOGNITION; TRACKING; CAMERA; POSE;
Keywords:
gaze determination; iris contour; circle/ellipse; model-based monocular vision; focus point; human-machine interaction;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Sung, E Nanyang Technol Univ, Sch Elect & Elect Engn, Div Instrumentat & Controls,Nanyang Ave, Singapore 639798, Singapore Nanyang Technol Univ Nanyang Ave Singapore Singapore 639798 apore
Citazione:
H.G. Wang e E. Sung, "Gaze determination via images of irises", IMAGE VIS C, 19(12), 2001, pp. 891-911

Abstract

In this paper, we present a new approach for measuring eye-gaze of human via images of the irises. Two iris contours are approximately modeled as twocircles having known radii and we estimate the ellipses of their projections onto image plane, respectively. The eye-gaze, defined in this paper as the unit surface normal to the supporting plane of the iris, can be estimated from the projection of the iris contour (limbus). The unique solution of the eye-gaze was obtained based on a geometric constraint, namely that the difference between the two normal directions to the supporting planes of the left and right iris should be minimal, irrespective of eyeball rotations and head movements. Furthermore, the 3D location of the center of the irises can be calculated if the radius of the iris contour is given. The robustness of this approach was verified by experiments on synthetic and real image data. In order to obtain a higher resolution of the iris, a zoom-in camera is used. This creates an additional problem of having to relate the camera for estimating the head-pose to the iris camera. A general approach that combines head-pose determination with gaze estimation is proposed. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 18:49:14