Vehicle flow detection method based on background modeling

A technology of traffic flow detection and background modeling, applied in traffic control systems of road vehicles, image data processing, instruments, etc., can solve problems such as inability to detect stationary vehicles

Active Publication Date: 2015-05-06
SHANDONG GUANGXIN ENG TESTING GRP CO LTD
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing traffic flow detection method cannot avoid the influence of light changes, dense traffic flow, etc., and cannot detect stationary vehicles

Method used

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  • Vehicle flow detection method based on background modeling
  • Vehicle flow detection method based on background modeling
  • Vehicle flow detection method based on background modeling

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specific Embodiment approach

[0031] The specific embodiment of the present invention is described in conjunction with accompanying drawing: a kind of traffic flow detection method based on background modeling of this embodiment, specifically:

[0032] Step 1. View the current frame sequence. If the current frame sequence is the first frame, use the Hough transform to obtain the information of the road inclination angle;

[0033] Step 2. If the current frame sequence is not the first frame, use the HSV feature method to remove the shadow of the image, specifically: the HSV color space is very close to the human eye's perception of color, where H, S and V represent chromaticity (Hue) respectively , saturation (Saturation) and brightness value (Value), through the following algorithm to capture shadows:

[0034]

[0035] where SP k (x, y) is the pixel result obtained in the kth frame: 1 represents the shadow pixel, 0 represents the object pixel, and I k (x,y) and B k (x, y) represent the pixel values ​...

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Abstract

The invention provides a vehicle flow detection method based on background modeling, and relates to a vehicle flow detection method. By the vehicle flow detection method based on background modeling, the problem that the existing vehicle flow detection method is affected by change of light rays and cannot detect vehicles which do not move is solved. The vehicle flow detection method based on background modeling comprises the following steps of (1) judging whether backgrounds are updated or not by using a ratio of frame difference to a background difference value; (2) extracting a foreground image and eliminating shadows by using an HSV (hue, saturation and value) characteristic method; and (3) transforming images by using a Hough transform method and tracking and counting vehicles by using a minimum enclosing rectangle method. By the vehicle flow detection method based on background modeling, the problems that backgrounds are affected by change of light rays and vehicles which do not move cannot be detected by frame difference are solved.

Description

technical field [0001] The invention relates to a traffic flow detection method, in particular to a background modeling-based traffic flow detection method, and belongs to the technical field of traffic flow detection. Background technique [0002] Background modeling is a common method for traffic flow detection. However, in the actual traffic flow detection process, there are many factors that affect the effect of background modeling, such as: dense traffic flow, vehicles stop immediately, small distance between vehicles, large impact of light, etc., which in turn affect the overall traffic flow detection effect, in order to solve this problem , a more advanced traffic flow detection method is needed. Contents of the invention [0003] The purpose of the present invention is to solve the problem that the existing traffic flow detection method cannot avoid the influence of light changes, dense traffic flow, etc., and cannot detect stationary vehicles. [0004] The techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/065G06T7/00
CPCG06T2207/10016G06T2207/30236G06T2207/30242G08G1/065
Inventor 宋华军范晶晶刘芬任鹏肖渤涛周光兵
Owner SHANDONG GUANGXIN ENG TESTING GRP CO LTD
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