Unlock instant, AI-driven research and patent intelligence for your innovation.

A nighttime vehicle detection and counting method based on back projection image

A technology of vehicle detection and counting method, applied in image data processing, traffic control system of road vehicles, calculation, etc., to reduce the influence of halo and road reflected light, broad application prospects, and improve accuracy.

Active Publication Date: 2019-02-12
CHANGAN UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above night vehicle detection and counting methods are easily affected by non-vehicle lights (warning lights) or reflected light from the vehicle body

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
  • A nighttime vehicle detection and counting method based on back projection image
  • A nighttime vehicle detection and counting method based on back projection image
  • A nighttime vehicle detection and counting method based on back projection image

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0041] The nighttime vehicle detection and counting method based on the back projection image of this embodiment, by setting the back projection surface and restoring the back projection image corresponding to the back projection surface, and then performing a series of processing and analysis on the back projection image, finally realizes Vehicle detection and vehicle counting, the initial number of vehicles is 0. The method of the present embodiment comprises the following steps:

[0042] Step 1: Use the road surface monitoring camera to continuously shoot road surface images to obtain multiple frames of video images on the road surface; set a three-dimensional back-projection detection surface parallel to the plane where the front of the vehicle is located and along the vertical direction, and the acquired video images are displayed on the set three-dimensional back-projection detection surface On the surface, the size of the three-dimensional back-projection detection surf...

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 discloses a method for detecting and counting vehicles at night based on a back projection image. By establishing a three-dimensional back projection surface, the back projection image of each frame of image is obtained; the car lights are roughly matched to obtain a pair of car lights and a pair of car lights. Finely match the light pairs to obtain the target car light pair; form the target car light pair group of the target car light pairs belonging to the same vehicle, determine the matching times of each target car light pair group, and determine the target car light pair according to the matching times Whether it is a detected vehicle target at night. The method of the invention has the characteristics of real-time and high efficiency for detecting and counting vehicles at night, and has broad application prospects.

Description

technical field [0001] The invention belongs to the field of video detection, and in particular relates to a method for detecting and counting vehicles at night based on back projection images. Background technique [0002] In recent years, the rapid development of social economy has led to a sharp increase in the number of private cars. As a real-time and efficient traffic management system, intelligent transportation system has been recognized by the world for its ability to effectively solve traffic congestion. The vehicle detection and counting method occupies a very important position in the research of intelligent transportation system, and the vehicle detection and counting is the first step to obtain the traffic flow information. [0003] At present, vehicle detection and counting at night is a part of vehicle detection. It is difficult or basically impossible to obtain clear images of vehicles through cameras in environments with poor lighting conditions at night, w...

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 Patents(China)
IPC IPC(8): G06K9/00G06T7/254G06T7/50G06K9/62G08G1/017G08G1/065
CPCG08G1/0175G08G1/065G06T2207/20076G06T2207/20016G06T2207/30236G06T2207/20216G06V20/54G06V2201/08G06F18/22
Inventor 崔华王菽裕宋翔宇孙士杰肖启恒王璇
Owner CHANGAN UNIV