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Method and device for counting vehicles

A counting method and technology of a counting device, which can be applied to road vehicle traffic control systems, calculations, computer components, etc., and can solve problems such as inaccurate vehicle counting

Active Publication Date: 2011-11-02
北京汉王智远科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a vehicle counting method and device, which overcomes the problem of inaccurate vehicle counting

Method used

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  • Method and device for counting vehicles
  • Method and device for counting vehicles

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Embodiment 1

[0039] An embodiment of the present invention provides a vehicle counting method, such as figure 1 As shown, the method includes:

[0040] 101. Determine the counting mode of the vehicle according to the correlation coefficient corresponding to the grayscale histogram of the video image, where the counting mode includes a day mode and a night mode.

[0041]It should be noted that due to the difference in brightness, there is a large difference in the gray histogram distribution of day and night scenes. The gray value of the daytime image is concentrated near the median value, while the gray value of the night image is concentrated in the lower gray value. In a section or when there are many light sources such as car lights, the gray value is distributed at both ends of the histogram. The k Nearest Neighbors (kNN) method is adopted, and the correlation coefficient of the gray histogram is used as the distance value to realize the discrimination algorithm of day and night. The...

Embodiment 2

[0104] An embodiment of the present invention provides a vehicle counting device, such as Image 6 As shown, it includes: a counting mode determining unit 30 , a first counting unit 31 and a second counting unit 32 .

[0105] The counting mode determination unit 30 is configured to determine the counting mode of the vehicle according to the correlation coefficient of the grayscale histogram of the video image, and the counting mode includes a daytime mode and a nighttime mode. According to the counting mode determined by the counting mode determination unit 30, the first counting unit 31 or the first counting unit 32 is called to count the vehicles.

[0106] The first counting unit 31 is used for performing motion detection and / or edge detection using the preset first virtual coil and head detection using the preset second virtual coil during the daytime mode, so as to perform vehicle head detection on the video image Identify and count vehicles.

[0107] Among them, such as...

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Abstract

The embodiment of the invention discloses a method and device for counting vehicles, relating to the field of intelligent traffic monitoring and overcoming the problem of inaccurate vehicle counting. The method comprises the following steps of: determining a counting mode of the vehicles according to correlation coefficients corresponding to a gray scale histogram of a video image; in the daytime mode, carrying out motion detection and / or edge detection by utilizing a preset first virtual coil and vehicle head detection by utilizing a preset second virtual coil, and further identifying the vehicles in the video image and counting the vehicles; and in the night mode, carrying out head light detection and head light matching by utilizing a preset third virtual coil, and further identifying the vehicles in the video image and counting the vehicles. According to the embodiment of the invention, the counting modes of vehicle counting are determined according to the correlation coefficients corresponding to the gray scale histogram of the video image, the counting modes comprise the daytime mode and the night mode, and the corresponding method for counting the vehicles is called according to the determined counting mode, therefore, the accuracy rate of the vehicle counting is improved.

Description

technical field [0001] The invention relates to the field of intelligent traffic monitoring, in particular to a vehicle counting method and device. Background technique [0002] With the gradual acceleration of the urbanization process, traffic congestion has become more and more serious, leading to a higher incidence of accidents, aggravating environmental pollution, causing waste of resources, and bringing great inconvenience to people's travel. In the face of traffic congestion and limited land economic resources, the Intelligent Transport System (Intelligent Transport System, ITS) integrates modern information technologies such as sensing technology, signal processing technology, and control technology with traffic engineering to maximize the potential of traffic infrastructure. potential and guide reasonable traffic behavior. Among them, vehicle counting is an important module of ITS. The traditional vehicle counting method is to lay magnetic induction coils under the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/065G06K9/00G06K9/38
Inventor 黄磊刘昌平杨永辉
Owner 北京汉王智远科技有限公司
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