Self-adaptive intelligent traffic light and control method thereof

Abstract

The invention provides a self-adaptive control method of an intelligent traffic light, which operates according to the following principle: extracting a situation of vehicles on lanes and pedestrians on pedestrian crossings through computer vision technology, and automatically controlling a traffic light according to the extracted situation. The intelligent traffic light comprises an image sampling module, an image processing and interpreting module, an arbitration control module and a warning light display module. The control method comprises the following steps: obtaining collected images of current vehicle areas and pedestrian areas through the image sampling module; obtaining foreground parts of current vehicles and pedestrians through background subtraction, extracting vehicle parts according to extraction edge features and pedestrian parts according to faces and shape features of the pedestrians, and calculating the density of vehicles and pedestrians in the corresponding area. If the vehicle density in the vehicle waiting area is higher than a threshold at a time, the traffic light allows pedestrians to pass; and if the pedestrian density in the pedestrian waiting area is higher than a threshold at a time, the traffic light allows vehicles to pass. If the vehicle density and the pedestrian density are both lower than another corresponding threshold at a time, warming light signals are changed according to the interval for the general situation. The invention is particularly applicable to crowd control during the peak period.

Description

technical field [0001] The invention belongs to a novel self-adaptive intelligent traffic light, which is used for controlling the movement of vehicles and pedestrians at crosswalks in urban streets. That is, the intelligentization of the traffic light transformation at the pedestrian crosswalk. Background technique [0002] Traffic lights are an important component of urban traffic systems. It has played an irreplaceable role in ensuring traffic safety and regulating vehicle behavior. Although high-speed ring roads are set up in my country's large cities (such as Beijing), part of the traffic lights have been removed. But in ordinary streets and intersections, traffic lights are still one of the main means to regulate the behavior of various vehicles. In order to more effectively stop various traffic violations, there are often various cameras that cooperate with supervision at intersections and certain important parts of the street, mainly used to capture illegal vehicl...

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It is also not suitable for the flow of people

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