Road traffic signal control method and system using video to detect pedestrian crossing

Abstract

The invention provides a road traffic signal control method and system using video to detect pedestrian crossing. The method comprises the steps that S1, a pedestrian video image in a waiting area outside a crosswalk is acquired; S2, when a pedestrian traffic light is red, the number of pedestrians in the waiting area is calculated according to the pedestrian video image, and timing is carried out when the first pedestrian is acquired; S3, whether the number of the pedestrians in the waiting area exceeds a preset number or whether the waiting time of the first pedestrian exceeds preset time is judged, and step S4 is carried out if either is so, while returning to step S2 is carried out if both are not; and S4, the pedestrian traffic light becomes green. According to the invention, the pedestrian video image is acquired through video; the pedestrian traffic light automatically becomes green from red according to the number of the pedestrians or the waiting time; the waiting time of the pedestrians is reduced; and the traffic management efficiency is improved.

Description

technical field [0001] The invention relates to a road traffic signal control method and system based on video detection of pedestrians crossing the street. Background technique [0002] The existing road traffic signal control system mainly adopts the button trigger method for controlling pedestrian crossing. By setting pedestrian buttons on both sides of the crosswalk, pedestrians can trigger the crossing signal to the signal machine by pressing the button. After the trigger signal of the road, according to the internal setting of the signal machine, the state of the current signal light is appropriately changed to the green light state, so that pedestrians can pass through the road. The way of this pedestrian button can reduce the waiting time of pedestrians on both sides of the crosswalk and improve pedestrian passing. Efficiency of crosswalks. [0003] However, there are following problems in the pedestrian crossing control method with the pedestrian button mode: since...

AI Technical Summary

Problems solved by technology

[0003] However, the pedestrian crossing control method with pedestrian buttons has the following problems: because the button needs to be touched by hand, the installation position is relatively low, and it is easy to be damaged artificially.

Since it does not take effect immediately, it will affect many people, mistakenly thinking that the device is damaged, and not using it later, which reduces the efficiency of use

[0005] Moreover, the contact pedestrian button can only be convenient for pedestrians to cross the crosswalk when the red light is on, and the control of switching from the red light to the green light can reduce the time for pedestrians to wait for the red light on the street and improve the efficiency of pedestrians crossing the crosswalk. The method cannot detect the process of pedestrians passing the crosswalk, cannot judge whether all pedestrians have passed the crosswalk, and cannot control the extension of the green light time, so that the safety of pedestrians in the crosswalk cannot be guaranteed due to accidents or delays

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