Method for detecting vehicle queuing length at road crossing

A technology of queuing length and detection method, applied in traffic flow detection, instrument, character and pattern recognition, etc., can solve problems such as complex queuing of vehicles, achieve the effects of improving robustness, improving accuracy, and overcoming unstable idling time

Active Publication Date: 2013-08-21
SUN YAT SEN UNIV +1
View PDF3 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the change of vehicle queuing on the road is very complicated and involves many factors. How to accurately obtain the length of vehicle queuing is a key point

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for detecting vehicle queuing length at road crossing
  • Method for detecting vehicle queuing length at road crossing
  • Method for detecting vehicle queuing length at road crossing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0045] Such as figure 1 Shown is a flow chart of a specific embodiment of a method for detecting the queue length of vehicles at an intersection in the present invention. In the present invention, detecting the vehicle queuing length at the intersection refers to the length of the stationary vehicles in the approach road at the intersection during the red light cycle at the intersection, and there are four key points: red light, inside the approach road, stationary, and vehicles. The state of the signal light at the intersection can be obtained by receiving the signal from the signal machine, and the range of the approach road can be obtained as prior knowledge by manual calibration; in order to obtain the position information of the stationary vehicle, vehicle detection and motion detection are required. In this specific exa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the field of digital image processing, in particular to a method for detecting a vehicle queuing length at a road crossing. The method for detecting the vehicle queuing length at the road crossing comprises the following steps: S1, in the state of a red light, a binary foreground vehicle detection image and a motion detection image are obtained according to a current frame image; S2, the number of high value points P1 and P2 of the foreground vehicle detection image and the motion detection image is figured out by utilizing a sliding window; S3, the P1 and P2 are compared with a vehicle detection threshold value and a motion detection threshold value respectively to judge whether a static vehicle exits in the sliding window, if the static vehicle exits in the sliding window, the sliding window is moved backward from a stop line to the tail of a vehicle queue, the image space length of the vehicle queue is calculated, and an S4 is executed, and the S4 is executed if no static vehicle exits in the sliding window; S4, the road crossing is detected whether to be in the state of the red light or not, if the detected result is yes, a next frame image is obtained and the S1 is executed, otherwise, the image space length of the vehicle queue in the S3 is converted into the actual vehicle length, and the detection of the current state of the red light is stopped. The method for detecting the vehicle queuing length at the road crossing can accurately detect the length of the vehicle queue at the road crossing.

Description

technical field [0001] The invention relates to the field of digital image processing, in particular to a method for detecting the queue length of vehicles at an intersection. Background technique [0002] Vehicle queuing is a ubiquitous phenomenon in transportation systems, especially at intersections, which are usually frequent occurrences of traffic congestion. In the existing traffic control system, intelligent control is generally used to guide traffic, and the acquisition of traffic status is the premise of effective traffic intelligent control, and vehicle queuing is an important factor of traffic status. However, the change of vehicle queuing on the road is very complicated and involves many factors. How to accurately obtain the length of vehicle queuing is a key point. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for detecting the queuing length of vehicles at an intersection that can accura...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01G06K9/00G06K9/54
Inventor 李熙莹罗长政罗东华王恺
Owner SUN YAT SEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap