Method for obtaining traffic parameters in video mode

A traffic parameter and video technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of complex algorithm of dynamic contour method, existing problems in work, large amount of calculation, etc., to achieve simple and convenient reconfiguration, reduce Requirements, results are accurate and reliable

Inactive Publication Date: 2002-11-13
汤晓明
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the algorithm of dynamic contour method is complex and the amount of calculation is large
The shadow of the vehicle at dawn or evening will produce wrong judgment on the result, and there are also problems in working when the ambient light is weak (such as at night, etc.)

Method used

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Examples

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Embodiment Construction

[0020] The method of obtaining traffic parameters in the video mode is to use the corner features of the same image that appear in two consecutive frames and have displacements as moving features, and judge the entry and exit of vehicles according to the change in the number of moving features in the specified area, and then accumulate the traffic flow .

[0021] The moving features form a feature chain, and the longest moving feature chain is selected to count the moving distance d of the feature, and the actual distance D=d * B; t=(feature chain length-1)xper frame time; vehicle speed V=D / t; the average vehicle speed is calculated after statistical averaging of each vehicle.

[0022] Work process of the present invention is:

[0023] 1. Designated area

[0024] Define one or more designated areas in the acquired real-time video image. The area is rectangular. The width of a single area is about one lane width, and the length is about 1-6 meters (actual length).

[0025]...

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Abstract

A method for obtaining the traffic parameters in video mode includes such steps as drawing a rectangular region (1-7m X 1-6m) in a video image, drawing a white line or putting a long rod on a road close to the designated region, calculating the ratio of the marker length to the length of the marker in the image, searching the characteristics of image corner in the region, and obtaining the traffic volume, car speed and average car speed according the the number of the said corner characteristics and the change in position.

Description

technical field [0001] The invention relates to a method for acquiring traffic parameters in a video mode. Background technique [0002] With the rapid development of my country's economy and society, the demand for road traffic increases rapidly, and the contradiction between high social requirements and low management level faced by urban road traffic is very prominent. The main performance is that some cities have serious traffic congestion and disordered traffic order. The above-mentioned problems directly affect the efficiency and safety of urban transportation, and aggravate the environmental pollution of the city. [0003] Intelligent transportation system is currently a frontier research topic in the field of transportation in the world. Developed countries have proposed and implemented a series of research plans, the core of which is to use information technology, communication technology, computer technology, control In-depth transformat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 汤晓明
Owner 汤晓明
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