A C-V2X-based Pedestrian Detection and Recognition System at Urban Intersections

Abstract

The invention discloses a pedestrian detection and recognition system for city intersections based on C-V2X (Cellular Vehicle-to-Everything). The system comprises the following steps: designing an information collection framework based on C-V2X communication technique, and determining the type of mobile phone carriers by combining with a city intersection high-precision map; determining the probability that the carriers are pedestrians according to the current positions of the C-V2X terminal carriers in future; recognizing whether the C-V2X mobile phone carriers are pedestrians according to the current speed information of the C-V2X mobile phones; obtaining the density range when the C-V2X mobile phone carriers are pedestrians, and determining the probability that the C-V2X mobile phone carriers are pedestrians under the current density by combining with the density information around the C-V2X mobile phones; and representing directions by virtue of a domain method, dividing the regionin the range of the intersection into different regions, obtaining an advancing direction set when the C-V2X mobile phone carriers are pedestrians by virtue of the previous directions of the C-V2X mobile phones, influence factors of the pedestrians to the directions and influence factors of the positions to the directions, calculating the probability that the C-V2X mobile phone carriers in advancing directions are pedestrians by combining the actual C-V2X mobile directions.

Description

technical field [0001] The invention belongs to the field of pedestrian identification at future urban traffic intersections, and in particular relates to a C-V2X-based pedestrian detection and identification system at urban intersections. Background technique [0002] A large number of vehicles and pedestrians gather at urban intersections, and it is one of the areas with large traffic and pedestrian flows. Due to the complex and changeable traffic scene, it is a frequent place for traffic accidents. Pedestrian detection and identification at intersections can collect pedestrian flow data and changing rules at specific times at intersections, provide raw data for intersection traffic participant models, and provide basis for pedestrian warning, path optimization, and other traffic scheduling. [0003] At present, there are many types of pedestrian recognition technologies, and the commonly used ones are mostly based on vision, infrared, radar, and laser. Vision-based recog...

AI Technical Summary

Problems solved by technology

When laser technology is applied at urban intersections, it is very easy to cause interference to pedestrians and vehicles and cause traffic accidents, and lasers cannot accurately identify a large number of pedestrians in complex backgrounds

The above vehicle and pedestrian detection technology based on a single technology has great defects. The detection method based on the fusion of multiple technologies needs to use multiple devices, and there are problems of interference between devices and repeated data collection, and in the process of vehicle and pedestrian recognition. , it is necessary to add equipment dedicated to data detection, transmission, and reception on the basis of existing basic equipment, which increases research and application costs

[0004] With the development of the Internet of Things and intelligent transportation, the types of data collected by a single communication technology are single, and there is a phenomenon of being interfered by other devices. Using a single communication technology is far from meeting the increasingly rich communication needs between communication terminals.

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