Self-adaptive pedestrian street-crossing signal calculating method based on video

Abstract

The invention discloses a self-adaptive pedestrian street-crossing signal calculating method based on a video, and overcomes the problems that constant green light time, in which pedestrians cross the street, at present increases delay of motor vehicles and causes hidden troubles in pedestrian safety. The method comprises the steps that 1) hardware equipment is installed; 2) the background is initialized; 3) the background is updated by background difference, threshold calculation and background image update; 4) shadows are rejected by estimating the luminance difference, estimating the chroma difference and estimating a local position; 5) features are selected and extracted by counting the amount of foreground pixel points, determining a feature selecting threshold, selecting features and extracting features; 6) the amount of pedestrians in a pedestrian waiting area is detected by constructing a feature sample library, self-crossing verification of the sample library, establishing a pedestrian quantity detection model, and detecting the pedestrian amount via a video sequence; 7) street-crossing time of the pedestrians is detected; and 8) the street-crossing time of the pedestrians is calculated by constructing a self-learning sample library, establishing a street-crossing time model and calculating the street-crossing time.

Description

Technical field [0001] The present invention relates to a control method for urban traffic management. More specifically, the present invention relates to a video-based adaptive calculation method for pedestrian crossing signals. Background technique [0002] At present, the domestic pedestrian crossing signal setting is mainly based on the tolerable waiting time of pedestrian crossing on the unsignaled road section, and the pedestrian crossing signal control is carried out in a fixed period. Inductive control is mainly used abroad. Inductive control uses detection of the gap between motor vehicles to set pedestrian crossing time. These existing methods are all based on the premise of reducing motor vehicle delays. When the number of pedestrians is too large or too few, the time for pedestrians to cross the green light is insufficient or wasted, which brings hidden dangers to pedestrian safety. The manual button-type crossing signal control sets the pedestrian crossing time acco...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the problems in the prior art that the time of the green light for pedestrian crossing is fixed, which causes the delay of motor vehicles to increase, and at the same time brings hidden dangers to the safety of pedestrians, and provides a video-based pedestrian crossing signal self-adaptive calculation method

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