Ophthalmology inspection device and pupil tracking method

A pupil tracking method includes: retrieving an external eye image of a subject, wherein the external eye image includes a pupil of the subject; performing an image preprocessing on the external eye image, wherein the image preprocessing includes performing binary conversion on the external eye imag...

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Bibliographic Details
Main Authors LI, JYUN-HONG, LEE, YU-TSUNG, LIN, YUIAN, KUO, YUNG-EN
Format Patent
LanguageChinese
English
Published 16.01.2023
Subjects
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
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Summary:A pupil tracking method includes: retrieving an external eye image of a subject, wherein the external eye image includes a pupil of the subject; performing an image preprocessing on the external eye image, wherein the image preprocessing includes performing binary conversion on the external eye image to obtain a binary image; finding out a contour boundary of each feature in the binary image, and screening out a pupil feature based on a variance of a distance from the contour boundary of each feature to a corresponding reference point; fitting the contour boundary of the pupil feature by a boundary fitting method to find a center coordinate of the pupil feature. The above-mentioned pupil tracking method can track the pupil of the subject's eyeball without a stereo camera. An ophthalmology inspection device using the above-mentioned pupil tracking method is also disclosed.
Bibliography:Application Number: TW202110124054