Computer Science ›› 2019, Vol. 46 ›› Issue (9): 284-290.doi: 10.11896/j.issn.1002-137X.2019.09.043

Special Issue: Medical Imaging

• Graphics,Image & Pattern Recognition • Previous Articles     Next Articles

Iris Center Localization Method Based on 3D Eyeball Model and Snakuscule

ZHOU Xiao-long, JIANG Jia-qi, LIN Jia-ning, CHEN Sheng-yong   

  1. (College of Computer Science and Technology,Zhejiang University of Technology,Hangzhou 310023,China)
  • Received:2018-08-12 Online:2019-09-15 Published:2019-09-02

Abstract: In order to imrove the accuracy of iris center localization of eyes in gaze estimation,this paper proposed a novel iris center localization method based on 3D eyeball model and Snakuscule.Firstly,a facial alignment method is employed to get the facial feature points and the obtained points are used to obtain the initial iris center.Then,the eye status is judged to reduce the error brought by the low-quality image.To further obtain the accurate iris center location,the energy model of Snakuscule is improved and the iris contour is updated iteratively by a fixed size of Snakuscule.The energy value is obtained by combining the Snakuscule model and 3D eye model.The 3D eyeball model reflects the geometric relationship between the iris center,the eyeball center and the iris contours.According to the energy value,the final iris center can be obtained by updating the iris contours iteratively.Finally,experiments conducted on BioID face database validate the effectiveness and superiority of the proposed method.The maximum standard errors of the algorithm reach at 85.0%,97.8% and 99.8% respectively when e≤0.05,e≤0.1,and e≤0.25.

Key words: 3D eyeball model, Energy model, Iris center localization, Snakuscule

CLC Number: 

  • TP391.4
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