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Proceedings Paper

Implementation of pupil location system based on bright pupil effect
Author(s): Huirong Tao; Quan Zhang V
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Paper Abstract

Based on the bright pupil effect of human eyes irradiated by infrared light source, a pupil location method suitable for ophthalmic measurement equipment is proposed. Using 850nm infrared light source, a pupil location system based on bright pupil effect was designed. Firstly, Pulse-coupled neural network (PCNN) algorithm is used to segment the acquired image and obtain the preliminary pupil position. Then the Canny algorithm is used to extract the contour of the pupil's edge. Under normal circumstances, the pupil of the human eye is elliptical. Therefore, the optimal elliptical fitting of the pupil preliminary contour obtained above is finally performed. After the ellipse fitting, the coordinates of the ellipse center are obtained, and the central coordinate of the ellipse is the precise pupil position. The experimental results show that this method can obtain higher pupil location accuracy and speed.

Paper Details

Date Published: 7 November 2018
PDF: 6 pages
Proc. SPIE 10832, Fifth Conference on Frontiers in Optical Imaging Technology and Applications, 108320M (7 November 2018); doi: 10.1117/12.2506730
Show Author Affiliations
Huirong Tao, Tianjin Vocational Institute (China)
Quan Zhang V, Tianjin Vocational Institute (China)


Published in SPIE Proceedings Vol. 10832:
Fifth Conference on Frontiers in Optical Imaging Technology and Applications
Junhao Chu; Wenqing Liu; Huilin Jiang, Editor(s)

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