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Passive detection method and system of scales jump actions in highway charging and weighing

A technology of expressway and detection method, which is applied in the field of image processing, can solve the problems of affecting the work efficiency of toll stations and aggravating the damage of infrastructure such as expressways, and achieve the effect of improving robustness and detection efficiency, and being simple and cost-effective

Inactive Publication Date: 2011-08-24
XIDIAN UNIV
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Problems solved by technology

This kind of behavior not only caused economic losses to the country, but also aggravated the damage to infrastructure such as highways, and often caused disputes due to irregular weighing behaviors and affected the work efficiency of toll stations

Method used

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  • Passive detection method and system of scales jump actions in highway charging and weighing
  • Passive detection method and system of scales jump actions in highway charging and weighing
  • Passive detection method and system of scales jump actions in highway charging and weighing

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Embodiment Construction

[0032] refer to figure 1 , the present invention is as follows to the passive detection step of " skipping scale " behavior in expressway billing and weighing:

[0033] Step 1, using camera equipment to continuously collect images of the vehicle under test passing through the dynamic weighing scale, and convert it into a digital video format;

[0034] Step 2: firstly carry out image grayscale processing on the collected image, convert the image into a grayscale image with a grayscale range of 0-255; then use the maximum inter-class variance method (Otsu method) to perform image binarization operation, and convert The image is transformed into a black and white two-color image; finally, the Gaussian filter is used to preprocess the noise in the image to filter out the noise;

[0035] Step 3: For the acquired image after the preprocessing of filtering noise, use the frame difference method and the connected domain method to obtain the shape features and positions of the moving ...

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Abstract

The invention discloses a passive detection method of scales jump actions in highway charging and weighing, belonging to the technical field of image processing. The method comprises the following detection steps of: (1) acquiring continuous images of vehicles passing through a dynamic weight balancer and converting the images into digital video formats; (2) carrying out grayness, binarization and noise filtering pretreatment operations on the acquired continuous images of the vehicles; (3) extracting shape characteristics and stop positions of the vehicles in the pretreated images and contrasting the shape characteristics of the vehicles with a vehicle threshold value to exclude small vehicles; (4) judging whether the vehicles have scales jump suspicions or not according to the conditionwhether the extracted vehicle stop positions enter a specific area in front of the dynamic weight balancer or not; and (5) carrying out affine transformation on the images, calculating an optical flow field, contrasting with an action judge threshold value to judge whether the vehicles have scales jump or not and storing scales jump videos. The invention can effectively detect the scales jump actions in highway charging and weighing in real time.

Description

technical field [0001] The invention belongs to the field of image processing and relates to video detection technology, which can be used to detect the irregular scale-over behavior of "jumping scales" that occurs in expressway billing and weighing. Background technique [0002] "Scale skipping" is an irregular scale-over behavior in expressway billing and weighing. The driver of a truck usually stops in front of the dynamic weighing scale when weighing at a highway toll station, then quickly increases the accelerator and then suddenly releases the clutch, causing the front of the vehicle to be lifted to a certain extent, taking advantage of the situation and quickly passing through the dynamic weighing scale. Heavy scales, which cause the measurement of dynamic weighing scales to be too small, to achieve the purpose of paying less fees or avoiding overload penalties. This behavior not only caused economic losses to the country, but also aggravated the damage to infrastruc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/20G07B15/06G01G19/03
Inventor 卢朝阳李静姜维祝明李远征
Owner XIDIAN UNIV
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