Automatic Pupil Detection Method System Google
Summary
The USPTO granted patent US12605065B2 to Google LLC for a method and system of detecting pupillary positions on a subject's head. The system uses a camera and light source positioned in front of the subject to capture image data, detect the subject's face, identify up to two eyes, detect the reflection of the light source on each eye, and estimate pupillary position based on the light source reflection. The patent also covers determination of interpupillary distance, left pupil distance, and right pupil distance from the estimated pupillary positions. The patent was filed on July 27, 2020, and contains 19 claims.
What changed
The USPTO granted patent US12605065B2 to Google LLC for an automatic pupil detection system and method. The patented technology captures image data of a subject's frontal face using a camera and light source, detects the subject's face, identifies up to two eyes, detects light source reflections on each eye, and estimates pupillary positions based on those reflections. The patent covers interpupillary distance, left pupil distance, and right pupil distance calculations.
Competitors developing eye-tracking or pupil detection technology should be aware that Google LLC holds patent rights to this specific methodology, which may affect freedom-to-operate assessments. Companies in the computer vision, biometrics, or eye-tracking sectors may wish to review this patent when designing alternative pupil detection approaches to avoid potential infringement issues.
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Apr 22, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Method and system for automatic pupil detection
Grant US12605065B2 Kind: B2 Apr 21, 2026
Assignee
GOOGLE LLC
Inventors
Ahmed Gawish, Idris S. Aleem
Abstract
Systems and methods of detecting pupillary positions on a head of a subject are described. While a camera and a light source are positioned in front of the head of the subject, the camera is caused to capture image data representative of a frontal portion of the head of the subject. From the image data, a face of the subject is detected. Up to two eyes are identified from the detected face. A reflection of the light source on each identified eye is detected. A pupillary position of each identified eye is estimated based on a position of the detected light source reflection on the identified eye. One or more of interpupillary distance, left pupil distance, and right pupil distance may be determined from the estimated pupillary positions.
CPC Classifications
A61B 3/0041 A61B 3/11 A61B 3/111
Filing Date
2020-07-27
Application No.
17434127
Claims
19
Parties
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Source
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