Method for detecting car safety belt fastening state based on road monitoring device

A technology of monitoring equipment and detection method, which is applied in the field of target location and detection of traffic safety pictures, and can solve the problems of large number of pictures and large manpower.

Active Publication Date: 2014-10-29
CENT SOUTH UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Due to the huge number of pictures, it takes a lot of manpower and material resources

Method used

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  • Method for detecting car safety belt fastening state based on road monitoring device
  • Method for detecting car safety belt fastening state based on road monitoring device
  • Method for detecting car safety belt fastening state based on road monitoring device

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Embodiment Construction

[0050] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0051] Such as figure 1 As shown, a method for detecting the fastening state of a car seat belt based on road monitoring equipment, based on images taken from the road, includes the following steps:

[0052] Step 1: Obtain monitoring images from road monitoring equipment, such as figure 2 shown;

[0053] Step 2: After preprocessing the monitoring image according to the characteristics of the car and the background object, use integral projection to locate the body area in the original monitoring image obtained in step 1, such as image 3 shown;

[0054] The preprocessing sequentially includes image grayscale, image filtering, edge detection and background noise removal operations;

[0055]Step 3: Use hough transform to locate the window area from the body area, such as Figure 4 shown;

[0056] Step 4: Locate the steering wheel...

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Abstract

The invention provides a method for detecting a car safety belt fastening state based on a road monitoring device. The method comprises the steps of: 1, obtaining a monitor image from the road monitoring device; 2, positioning a car body area in the original monitor image; 3, positioning a car window area in the car body area by hough conversion; 4, positioning the position of a steering wheel in the car window area based on arc detection; 5, extracting the image of a safety belt area according to the position of the steering wheel; 6, linearly detecting the safety belt, detecting that whether a straight slope corresponding to the safety belt is within 0.75-1.2, and thereby judging whether a driver in the car window area wears the safety belt; according to the method, the area where the safety belt is located is positioned by using the car body and car window areas and the steering wheel position, the detection range is gradually reduced, accuracy and efficiency in safety belt detection are improved, automatic judgment can be performed instead of using human eyes, and thereby accuracy and efficiency in detection on fastening of the safety belt are improved.

Description

technical field [0001] The invention relates to the technical field of target positioning and detection in traffic safety pictures, in particular to a method for detecting the fastening state of a car seat belt based on road monitoring equipment. Background technique [0002] Car safety belt is an important device to ensure the driver's safe driving and reduce the death and injury rate in traffic accidents. [0003] In the latest technical research, the identification method of seat belts from the pictures taken on the road is generally by locating the license plate, then according to the position of the license plate, using the proportional relationship between the car body and the window to locate the window, and then finding the position of the steering wheel, and then using the straight line feature to detect the presence of seat belts. This method, first of all, due to the problem of the shooting angle, the cutting size is not uniform when the license plate is position...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06T7/00
Inventor 施荣华周剑赵颖周芳芳李尹
Owner CENT SOUTH UNIV
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