Monocular focus estimation method for a freely-orienting eye using Purkinje-Sanson images

Yuta Itoh, Jason Orlosky, Kiyoshi Kiyokawa, Toshiyuki Amano, Maki Sugimoto

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

We present a method for focal distance estimation of a freely-orienting eye using Purkinje-Sanson (PS) images, which are reflections of light on the inner structures of the eye. Using an infrared camera with a rigidly-fixed LED, our method creates an estimation model based on 3D gaze and the distance between reflections in the PS images that occur on the corneal surface and anterior surface of the eye lens. The distance between these two reflections changes with focus, so we associate that information to the focal distance on a user. Unlike conventional methods that mainly relies on 2D pupil size which is sensitive to scene lighting and the fourth PS image, our method detects the third PS image which is more representative of accommodation. Our feasibility study on a single user with a focal range from 15-45 cm shows that our method achieves mean and median absolute errors of 3.15 and 1.93 cm for a 10-degree viewing angle. The study shows that our method is also tolerant against environment lighting changes.

本文言語English
ホスト出版物のタイトル2017 IEEE Virtual Reality, VR 2017 - Proceedings
出版社IEEE Computer Society
ページ213-214
ページ数2
ISBN(電子版)9781509066476
DOI
出版ステータスPublished - 2017 4 4
イベント19th IEEE Virtual Reality, VR 2017 - Los Angeles, United States
継続期間: 2017 3 182017 3 22

出版物シリーズ

名前Proceedings - IEEE Virtual Reality

Other

Other19th IEEE Virtual Reality, VR 2017
CountryUnited States
CityLos Angeles
Period17/3/1817/3/22

ASJC Scopus subject areas

  • Engineering(all)

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