US6130617A
Expired / Lapsed
US
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Driver's eye detection method of drowsy driving warning system
Assignee: Hyundai Motor Co
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Filing: 1999-06-09
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Granted: 2000-10-10
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Expires: 2019-06-09
Abstract
Abstract An eye detection method of a drowsy driving alarming system comprises the steps of: binarizing a driver's face image from a CCD camera, extracting candidate areas existing in pair into a binary face image, determining one candidate pair from among the candidate pairs as nostrils, setting the remained candidate pairs forming equilateral triangles in relation with the nostrils as eye candidate pairs, and determining a candidate pair forming the smaller equilateral triangle to be the driver's eyes.
Inventors
- 👤 Jung-hack Yeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:54
CPC Classifications
G; G06; G06V; G06V40/00; G06V40/10; G06V40/18; G06V40/19; G08; G08B; G08B21/00; G08B21/02; G08B21/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
77 words
An eye detection method of a drowsy driving alarming system comprising the steps of: binarizing a driver's face image input from a CCD camera; extracting candidate areas existing in pair into a binary face image; determining one candidate pair from among the candidate pairs as nostrils; establishing the remained candidate pairs forming equilateral triangles in relation with the nostrils as eye candidate pairs; and determining a candidate pair forming the small equilateral triangle as the driver's eyes.
Claim 2
Dependent Claim
77 words
An eye detection method of a drowsy driving alarming system comprising the steps of: binarizing a driver's face image input from a CCD camera; extracting candidate areas existing in pair into a binary face image; determining one candidate pair from among the candidate pairs as nostrils; establishing the remained candidate pairs forming equilateral triangles in relation with the nostrils as eye candidate pairs; and determining a candidate pair forming the small equilateral triangle as the driver's eyes.
Claim 3
Dependent Claim
45 words
An eye detection method of claim 1 wherein the binarization of the driver's face image is achieved by means of threshold filtering in which pixels having black level similar to that of eyes are designated as "1"s and the other pixels are designated as "0"s.
Claim 4
Dependent Claim
32 words
An eye detection method of claim 1 wherein from among candidate pairs one candidate pair in which its two black areas positioned most closely to each other is determined to be nostrils.
Claim 5
Dependent Claim
21 words
An eye detection method of claim 1 wherein a pair forming the smaller equilateral triangle is determined as the driver's eyes.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-10-10 | 2004-04-10 | 2004-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-10-10 | 2008-04-10 | 2008-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-10-10 | 2012-04-10 | 2012-10-10 | $7700.00 | Window Closed / Lapsed |