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Vehicle flow statistics method based on video analysis

A video analysis and traffic flow technology, which is applied in the field of traffic engineering, can solve the problems of missed detection and false detection of small cluster targets in the distant view, and achieve ideal results

Inactive Publication Date: 2016-03-23
CHANGAN UNIV
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Problems solved by technology

However, this method has missed and false detections for shadows and small clusters of objects in the foreground.

Method used

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  • Vehicle flow statistics method based on video analysis
  • Vehicle flow statistics method based on video analysis
  • Vehicle flow statistics method based on video analysis

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Embodiment Construction

[0035] The content of traffic statistics of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] The present invention firstly introduces the vehicle detection method used for detecting and extracting moving vehicles, and then introduces a traffic flow statistical calculation method based on video analysis for the ubiquitous vehicle misdetection and missed detection problems in the vehicle counting method, The method combines position information and pixel change information to carry out vehicle statistics. On the basis of ordinary virtual detection lines, the present invention proposes a vehicle counting and segmentation method that combines position information and detection line pixel change laws, and experiments have confirmed that The method has excellent performance in terms of real-time and accuracy.

[0037] The technical solution adopted to solve the above problems is a traffic flow st...

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Abstract

The invention discloses a vehicle flow statistics method based on a virtual detection line, and the method is applied in an actual road traffic scene, wherein real-time traffic video flows are processed; and moving objects are identified and extracted by a frame difference method. With regard to vehicle flow detection, problems such as detection omission and wrong detection will inevitably take place to a vehicle counting method based on the virtual detection line. Aiming at the problem, the invention extracts and combines two types of image information including position information and pixel variation information and discloses a novel vehicle flow division counting method based on the virtual detection line. The method combines respective advantages of a virtual coil and target tracking and has the advantages of timeliness and high accuracy of vehicle flow statistics. Experimental results show that accuracy of the method used in video vehicle counting in each lane under various different weather conditions exceeds 95%, and the method has the advantages of easy generalization and implementation.

Description

【Technical field】 [0001] The invention belongs to the field of traffic engineering and relates to a traffic flow statistics method based on video analysis. 【Background technique】 [0002] The traditional vehicle statistics methods of video analysis are mainly divided into virtual detection line or virtual coil method, target tracking method and so on. According to the particle characteristics of the same vehicle, there is a target cluster tracking method, which merges or separates clusters by analyzing cluster polygons and background information, which improves the problem of target sticking or breaking to a certain extent. After the vehicle is identified, the similarity of the color histogram where the particle center is located is used to track the moving vehicle. However, smaller moving vehicles may be missed because the number of particles is too small to generate a cluster. [0003] There is a detection and tracking method based on Hidden Markov Metric Field that assu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/065G06K9/00
CPCG08G1/065G06V20/40G06V2201/08
Inventor 常志国李晶胡云鹭郭茹侠何创闻江
Owner CHANGAN UNIV
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