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Street traffic volume statistics and sped measurement method based on binocular stereo vision

A technology of binocular stereo vision and traffic flow, which is applied in the field of road traffic flow statistics and speed measurement based on binocular stereo vision, can solve the problems of insufficient vehicle traffic information, road traffic flow statistics and speed measurement methods, etc., and achieves low implementation cost and reliability. High performance and accurate measurement

Active Publication Date: 2015-05-27
HARBIN ENG UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a road traffic statistics and speed measurement method based on binocular stereo vision that solves the deficiency of vehicle traffic information acquisition in the prior art

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  • Street traffic volume statistics and sped measurement method based on binocular stereo vision
  • Street traffic volume statistics and sped measurement method based on binocular stereo vision
  • Street traffic volume statistics and sped measurement method based on binocular stereo vision

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Embodiment Construction

[0026] The invention discloses a method of road traffic flow statistics and speed measurement based on binocular stereo vision, and in particular relates to a method of counting vehicle flow by setting a statistical counting area and using centroid parallax and camera internal and external parameters to realize 2-dimensional coordinates to 3 Dimensional conversion and the method of vehicle speed calculation.

[0027] A method for road traffic statistics and speed measurement based on binocular stereo vision, comprising the following steps:

[0028] S1. Perform image grayscale processing on the image sequence acquired by the left camera of the binocular camera, and perform optical flow calculation on the grayscale processed images.

[0029] S2. Set a speed threshold to segment the result of the above optical flow calculation.

[0030] S3. Use connected domain analysis to detect and analyze the image sequence after optical flow calculation, and use area features to screen to ex...

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Abstract

The invention in particular relates to a street traffic volume statistics and sped measurement method based on binocular stereo vision. The method comprises the following steps: (1) performing gray-scale treatment on the image sequence acquired by a left camera of a binocular camera, and performing optical flow computation on the processed image sequence; performing connected component analysis on the previous optical flow computation result, filtering false targets by virtue of area characteristics, thereby obtaining the area and centroid coordinates of the moving vehicles; counting the street traffic volume in the mode of setting the statistical area and comparing the centroid coordinates of the vehicles; and converting the centroid coordinates of the vehicles to a camera coordinate system by utilizing the parallax error information of the moving vehicles and the internal and external parameters of the binocular camera, and calculating the vehicle speed. The method disclosed by the invention is suitable for statistics and speed measurement of multiple vehicles in the street and has the characteristics of measurement accuracy, high reliability and low implementation cost.

Description

technical field [0001] The invention specifically relates to a method for road traffic flow statistics and speed measurement based on binocular stereo vision. Background technique [0002] With the continuous improvement of our country's economic development, people's living standards continue to improve, and the number of vehicles continues to increase. A large number of vehicles have entered our lives. While vehicles bring convenience to our travel, they also bring certain traffic problems. Traffic accidents occur frequently. Safety has become an issue we have to consider. Intelligent traffic management is a topic that is being researched and widely concerned in the world at present. The application of intelligent transportation system has brought great benefits to the transportation industry, and has played an increasingly important role in the management of road vehicles. The video vehicle detection technology has the characteristics of easy installation and low cost. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/052G06T7/20
Inventor 项学智王猛包文龙白二伟徐旺旺葛长赟张磊乔玉龙
Owner HARBIN ENG UNIV
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