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Bad driving behavior detection method based on tof camera

A technology of TOF camera and bad driving, applied in the field of intelligent traffic safety of 3D vision

Inactive Publication Date: 2017-04-05
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art, the present invention proposes a method for detecting bad driving behavior based on a TOF camera, which can effectively detect the bad driving behavior of the driver without interfering with the normal driving of the driver, and improve recognition accuracy, thereby reducing the incidence of accidents

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  • Bad driving behavior detection method based on tof camera
  • Bad driving behavior detection method based on tof camera
  • Bad driving behavior detection method based on tof camera

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Embodiment Construction

[0091] In this embodiment, a TOF camera-based bad driving behavior detection method is to obtain the driver's depth image in real time through the TOF camera installed diagonally above the driver in the car, through the virtual face rectangle, using ICP (iterative closest point ) The algorithm performs stereo registration of the current frame depth image with the reference image, and judges whether bad driving behavior has occurred according to the number of iterations; uses background subtraction to detect and track the hand, and judges whether it is based on the position of the hand and the virtual face rectangle If bad driving behavior occurs, the specific steps are as follows:

[0092] Step 1. Obtain a depth image:

[0093] The TOF camera is installed diagonally above the driver in the cab, and an alarm-capable microprocessor is installed on the car console. The TOF camera is used to obtain the time period T=(t 1 ,t 2 ,...t v ...,t m ) Depth image of the driver’s driving behavi...

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Abstract

The invention discloses a TOF (Time of Flight) camera based bad driving behavior detection method. The TOF camera based bad driving behavior detection method comprises step 1, obtaining a depth image; step 2, detecting and matching head areas; step 3, detecting and tracking hand areas. The TOF camera based bad driving behavior detection method can accurately and effectively detect bad driver driving behaviors under the condition that normal driving of a driver is not interfered, improves the identification accuracy and accordingly reduces the accident occurrence rate.

Description

Technical field [0001] The invention relates to a TOF camera-based motion recognition and safety assisted driving technology, belonging to the field of three-dimensional vision intelligent traffic safety. Background technique [0002] With the continuous improvement of the level of urbanization and motorization in my country, the problem of road traffic safety has become increasingly severe. Analyzing the causes of road traffic accidents in my country in recent years, it is found that about 90% of traffic accidents are caused by drivers' bad driving behavior. Therefore, the research on driving behavior, especially how to intervene in unsafe driving behavior, has become the core issue of ensuring road traffic safety. [0003] At present, the research on driving behavior at home and abroad mainly uses 2D camera to obtain the driver's video image, so as to detect the external state of the driver such as eyelid movement, eye closure, nodding and mouth movement, and develop alarm monit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
Inventor 胡良梅张旭东高隽董文菁杨慧杨静段琳琳徐小红
Owner HEFEI UNIV OF TECH