The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2014
Filed:
Oct. 28, 2010
Zejun Wu, Shenzhen, CN;
Ruzhong Cheng, Shenzhen, CN;
Wei Chen, Shenzhen, CN;
Yong Dai, Shenzhen, CN;
Yong Zhao, Shenzhen, CN;
Yunli Qing, Shenzhen, CN;
Zejun Wu, Shenzhen, CN;
Ruzhong Cheng, Shenzhen, CN;
Wei Chen, Shenzhen, CN;
Yong Dai, Shenzhen, CN;
Yong Zhao, Shenzhen, CN;
Yunli Qing, Shenzhen, CN;
Shenzhen Safdao Technology Corporation, Guangdong, CN;
Abstract
The present application discloses a method and device of detecting fatigue driving, comprising: analyzing an eye image in the driver's eye image area with a rectangular feature template to obtain the upper eyelid line; determining the eye closure state according to the curvature or curvature feature value of the upper eyelid line; and collecting statistics on the eye closure state and thereby determining whether the driver is in a fatigue state. The present application determines whether the eyes are opened or closed according to the shape of the upper eyelid, which is more accurate because the upper eyelid line has characteristics of higher relative contrast, anti-interference capacity, and adaptability to the changes in the facial expression.