Driver attention state monitoring method and device

A driver and attention technology, applied in character and pattern recognition, instruments, closed-circuit television systems, etc., can solve problems such as life and property safety of difficult drivers, inevitable accidents, fatal accidents, etc., and achieve the effect of ensuring driving safety

Inactive Publication Date: 2010-11-03
JIANGSU UNIV
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AI Technical Summary

Problems solved by technology

Driving behavior is a process that requires a high degree of concentration at all times. A small negligence may lead to a fatal accident, and the driver goes from a quasi-awake state of distracted driving to a listless and drowsy state. The formation of fatigue

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  • Driver attention state monitoring method and device
  • Driver attention state monitoring method and device
  • Driver attention state monitoring method and device

Examples

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[0040] Example

[0041] like Figure 4 , which consists of the interpupillary distance Si and the wheel distance Di to form a face "T"-shaped attention characterization curve. In any period of time T, the total number of consecutive pictures processed is: n=f*T (f: frame rate of video acquisition; T: detection time). On the basis of picture detection, the driver's attention feature parameters are extracted based on the f(x, y) area: lefteye(x, y) (left eye coordinates), righteye(x, y) (right eye coordinates) and mouse(x , y) (mouth coordinates), calculate the eigenvalues ​​of the eyes, mouth, and the horizontal and vertical changes of the driver's head during the driver's attention state monitoring process:

[0042] ① The interpupillary distance Si of the eyes is:

[0043] S i = ( leftey e i . x ...

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Abstract

The invention discloses driver attention state monitoring method and device. An output port of a camera is connected with an input port of a video decoder, and a digital signal processor is externally connected with the video decoder, a storage, a power supply and an alarm buzzer respectively. The method comprises the following steps of: acquiring a face video detection image of a driver by the camera, using the transverse width between two eyes of the driver and the longitudinal distance from the mouth to the middle point of a connecting line of the two eyes, which are detected under the normal state, as standard distances for locating the face, and resetting the standard distances whenever the face is located; comparing the distances actually detected in the driving process with the standard distances; and judging whether the driver is distracted according to the change obtained by comparing the actually detected distances and the standard distances. The invention can monitor the whole forming process of tiredness and distraction of the driver, judge whether the drive is tired and distracted, capture the distraction state of the driver in time, warn dangerous driving behavior such as distraction, and guarantee the safe driving of the driver.

Description

technical field [0001] The invention relates to the technical field of transportation engineering, in particular to a method and a device for detecting driver's attention. Background technique [0002] Drivers often lose control of the direction of the vehicle when they are driving fatigued, distracted by the surrounding things, answering mobile phones, or taking care of minors in the car, resulting in discontinuous and disordered driving behavior. The notable feature is lane departure , rear-end collision and other vehicle accidents. According to this feature, Wang Rongben, Guo Lie and others introduced the use of machine vision technology to monitor drivers in the "Research on Comprehensive Driving Safety Guarantee System Based on Machine Vision" published in July 2006, Volume 14, No. 2, Journal of Shandong Jiaotong University. Based on the movement characteristics of the eyes, mouth, head and other organs, a comprehensive quantitative evaluation model of driver fatigue a...

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Application Information

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IPC IPC(8): G06K9/00H04N7/18
Inventor 刘志强汪澎秦洪懋宋世亮
Owner JIANGSU UNIV
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