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Adaptive traffic signal timing method

A traffic signal and self-adaptive technology, applied in traffic control system, traffic control system of road vehicles, image data processing, etc., can solve problems such as inability to coordinate control of multiple nodes, and achieve the effect of alleviating traffic congestion

Inactive Publication Date: 2019-08-23
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is: in order to solve the problem in the prior art that the method of guiding traffic timing schemes that match different time periods by means of manual methods cannot carry out multi-node coordinated control of the area according to real-time traffic information, a traffic signal is proposed. Adaptive Timing Method

Method used

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  • Adaptive traffic signal timing method

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specific Embodiment approach 1

[0050] Specific implementation mode one: the following combination figure 1 and figure 2 Specifically illustrate this embodiment, in this embodiment, a traffic signal self-adaptive timing method, comprises the following steps:

[0051] Step 1: Obtain the video image information of the intersection;

[0052] Step 2: Perform grayscale processing on the video image information;

[0053] Step 3: Process the video image by using mean filtering and median filtering;

[0054]General traffic video images will be affected by various noises, which include not only Gaussian noise but also salt and pepper noise. Therefore, the video image is preprocessed by combining mean filtering and median filtering. , the processing order of mean filtering and median filtering has little effect on the result, so there is no order.

[0055] Step 4: using the open operation in morphology to process the video image sequence frame by frame;

[0056] Since the simple image grayscale processing and fi...

Embodiment

[0119] Example: such as image 3 As shown, the system of this embodiment includes a camera, a control circuit, and a host computer. The control circuit includes a main control module, a power supply module, a communication module, a signal light driver module, and a display module. The power supply module is connected to the main control module. The main control module is respectively connected to the signal light driving module and the display module, the signal light driving module is connected to each signal light, the main control module is connected to the upper computer through the network interface module based on the local area network, and the camera is connected to the upper computer based on the local area network.

[0120] The camera collects video images of vehicles running at the intersection, and then transmits the collected data to the PC through the network communication module, and the video image processing program in the host computer performs statistics on ...

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Abstract

The invention relates to an adaptive traffic signal timing method, relates to the field of traffic signal control, and solves the problem that a traffic timing scheme method, which is guided by an artificial method and fits in different time periods in the prior art, cannot perform multi-node coordinated control on an area according to real-time traffic information. The adaptive traffic signal timing method in the invention comprises the steps of: (1), obtaining video image information of an intersection; (2), performing gray-scale processing on the video image information; (3), processing a video image by utilizing mean filtering and median filtering; (4), processing a video image sequence frame by frame by adopting opening operation in morphology; (5), establishing a background model, and updating the background model in real time; (6), in combination with a frame difference method and a background difference method, detecting a moving object, and counting the target number; and (7),obtaining an area timing scheme by utilizing a firefly algorithm. By means of the adaptive traffic signal timing method in the invention, the time of various intersection signal lamps can be controlled in a coordinated manner according to an actual area traffic situation; and thus, traffic congestion is relieved.

Description

technical field [0001] The invention relates to the field of traffic signal control, in particular to an adaptive timing method for traffic signals. Background technique [0002] With the continuous expansion of the city scale, the urban motorization rate is also rising, the supply of road resources cannot match the expanding urban traffic demand, and problems such as traffic congestion, safety accidents, and environmental pollution have become increasingly prominent. At present, the intersection signal control method in many cities in China is multi-period timing control. Through the study of historical traffic data, the traffic flow change law in different time periods is calculated, and the timing scheme that matches the different time periods is guided by manual methods. . However, with the increase of urban car ownership and the diversification of travel purposes, the daily change characteristics of urban road traffic volume no longer have strong regularity, and the mu...

Claims

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Application Information

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IPC IPC(8): G08G1/081G08G1/096G06N3/00G06T5/00G06T7/246
CPCG08G1/081G08G1/096G06T7/246G06N3/006G06T2207/10016G06T2207/20036G06T2207/20032G06T2207/30236G06T5/90G06T5/70
Inventor 柳长源任宇艳洪路宁张一帆于会越
Owner HARBIN UNIV OF SCI & TECH