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Switching method between videos for detecting vehicles during day-night

A vehicle detection and video technology, applied in the field of transportation, can solve problems such as method failure, reduced accuracy, and inability to obtain sky image information, and achieves the effect of accurate switching time selection, low computational complexity, and improved effectiveness.

Inactive Publication Date: 2007-09-12
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Its shortcomings are: for fixed video detection systems, the cameras are generally installed on road poles or other roadside buildings to monitor the road conditions below, and cannot obtain image information of the sky; No matter which of the two detection methods is adopted, the accuracy rate will be greatly reduced (that is, the method will fail), which will affect the decision-making and scheduling of the upper-level traffic management system.

Method used

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  • Switching method between videos for detecting vehicles during day-night
  • Switching method between videos for detecting vehicles during day-night
  • Switching method between videos for detecting vehicles during day-night

Examples

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Embodiment Construction

[0028] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0029] The sample videos used in this example were collected on the A4 Expressway in Shanghai, including samples during sunrise from night to day and samples during sunset from day to night. Based on the sunrise time point and sunset time point, divide the 24 hours of a day into night, sunrise period, daytime, sunset period and nighttime, and establish sunrise (sunrise, from night to day) and sunset (sunset, from day to day) night) two transition periods, the duration of the sunrise and sunset periods is 1 hour, which can cover the evening stage and early morning stag...

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Abstract

This invention relates to a kind of day and night video vehicle detecting compartment's switch method, belong to aptitude trafficking technosphere. The invention by setting operational area that is able to cover whole road's each driveway, to obtain attributive information of road's variations brightness velocity form digital image, and by this to judge when processing day and night test method compartment's switch. In addition , this method divide one day into early morning early morning, day, evening and nighttime four stage; take sunrise and sunset time as reference point to set sunrise and sunset two transient time section; the switch method only function at transient time section, by multi- sensor's complementarily information confluent strategy, to solve problem of two vehicle instrumentation method's low detecting rate at day and night transient time section.

Description

technical field [0001] The invention relates to a method for vehicle detection in the technical field of transportation, in particular to a method for switching between day and night video vehicle detection. Background technique [0002] With the development of the economy and the improvement of people's living standards, the growth rate of the number of vehicles far exceeds the speed of road infrastructure construction, and the contradiction between vehicles and roads has become increasingly prominent. Intelligent Transportation System (ITS) has been recognized as an effective way to solve problems such as road traffic congestion and frequent accidents, and to ensure smooth and safe traffic. Vehicle detection is the basic core problem of intelligent transportation system. Compared with traditional detectors, video vehicle detectors have many advantages such as convenient installation and maintenance, low cost, wide monitoring range, and more types of traffic parameters, so...

Claims

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Application Information

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IPC IPC(8): G01J1/00G08G1/14
Inventor 万卫兵钱晋谭睿吴海涛王晓冬
Owner SHANGHAI JIAO TONG UNIV
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