Method for judging road vehicle jam based on finite-state machine (FSM)

A technology of finite state machine and discriminant method, applied in image analysis, instrumentation, calculation, etc., can solve problems such as inconvenient construction and maintenance, strong dependence on external systems, and poor system flexibility

Active Publication Date: 2012-11-07
FUDAN UNIV
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Problems solved by technology

This method has obvious shortcomings: strong dependence on external sys

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  • Method for judging road vehicle jam based on finite-state machine (FSM)
  • Method for judging road vehicle jam based on finite-state machine (FSM)

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Embodiment Construction

[0060] Such as figure 1 As shown, the video image data collected by the camera monitoring the traffic road is analyzed by the image processing algorithm. The specific steps are as follows:

[0061] 1. Use formula (1) to convert the color image to grayscale space;

[0062] 2. Calculate the gradient size of the grayscale image under the formula (5) through the edge operator defined by the formula (2);

[0063] 3. Use the formula (6) to carry out the cumulative projection of the image edge, and calculate the minimum value of the formula (7) under the set threshold to calculate the tail ordinate of the current road fleet. Here, the threshold is related to the width of the lane imaging, generally set as ;

[0064] 4. Then according to formula (9), calculate The minimum value of , obtain the movement vector of each block (patch);

[0065] 5. After the direction filtering process (10), keep the patch where the vehicle is traveling in the same direction as the road, and the an...

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Abstract

The invention belongs to the technical field of digital image processing and pattern recognition, and particularly relates to a method for judging a road vehicle jam based on a finite-state machine (FSM). The method comprises the following steps of establishing an FSM model according to GA115-1995 road traffic jam standard and combining with a forming process of an urban road jam, capturing a traffic road image by using a high-definition camera, estimating length and an overall speed of a vehicle queue on a motorway in the image, activating a trigger condition in the FSM according to limitations of the motorway to capacity and speed of vehicles, and judging whether the current road condition is in a jam state or not. Compared with traditional method, the method disclosed by the invention comprehensively considers the forming process of the urban road traffic jam, can dynamically detect the generation and the dissipation of the traffic jam in real time, and supplies an effective basis for traffic management to relevant departments.

Description

technical field [0001] The invention belongs to the technical field of digital image processing and pattern recognition, and in particular relates to a method for judging road vehicle congestion in intelligent traffic monitoring. Background technique [0002] With the rapid recovery and growth of my country's economy in recent years, the country's investment in the transportation industry has increased significantly. A large amount of investment in road infrastructure and the rapid increase in the number of motor vehicles have led to road vehicle congestion, frequent traffic accidents, and deterioration of the traffic environment. However, the corresponding traffic law education and the construction of an intelligent traffic management system are relatively lagging behind. pose serious challenges to traffic management. The role of traffic management is to reasonably guide, organize and restrict vehicles and pedestrians on the road, so as to make the traffic as safe and smoo...

Claims

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Application Information

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IPC IPC(8): G08G1/01G06T7/00
Inventor 鲁帅冯瑞金城薛向阳
Owner FUDAN UNIV
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