Background updating method and vehicle target extracting method in traffic video monitoring

Abstract

The invention discloses a background updating method and a vehicle target extracting method in traffic video monitoring. The background updating method comprises the following step of: carrying out background updating judgment based on Canny edge detection. The background updating method solves the problem that the real-time background updating property is poor when traffic jams occur in urban cross roads and people wait a traffic light at a traffic light cross road. The vehicle target extracting method comprises the background updating method disclosed by the invention and a shadow and adhesion eliminating method. The vehicle target extracting method comprises the following step of: extracting a foreground image of a vehicle target on the premise of obtaining an ideal background based onthe background updating method; and then eliminating shadows and adhesions, wherein the shadow and adhesion eliminating method comprises the following steps of: eliminating the shadows by using a cross-correlation function, filling a hole, cutting edges, and sequentially carrying out noise reduction, vertical projection and horizontal projection, and thus the problems of target vehicle adhesion and inaccurate outline caused by the shadows are solved; and extracting an ideal vehicle target.

Description

technical field [0001] The invention belongs to the technical field of intelligent traffic video monitoring, and in particular relates to a background update method based on Canny edge detection, and a vehicle target extraction method based on the background update method. Background technique [0002] The vehicle detection method based on video surveillance technology has developed rapidly, and has become a research hotspot in the field of intelligent transportation systems due to its outstanding advantages such as large detection area and flexible system settings. Video surveillance technology provides an intuitive and convenient analysis method for the traffic system, so video surveillance technology based on video image processing, analysis and understanding has attracted more and more attention. Vehicle detection is an important part of intelligent transportation system. Due to the development of video equipment and high-performance computer hardware and the maturity of...

AI Technical Summary

Problems solved by technology

[0021] In order to overcome above-mentioned defect, the present invention provides a kind of background updating method in the traffic video monitoring based on Canny edge detection, and the vehicle target extraction method in the traffic video monitoring based on the background updating method of the present invention, in the traffic video monitoring of the present invention The background update method of the present invention solves the problem of poor real-time background update of common urban crossing vehicle congestion and common red lights at traffic light intersections. The vehicle target extraction method in traffic video monitoring of the present invention also solves the problem of vehicle Problems with target sticking and inaccurate contours

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