Road traffic condition detection device based on panorama computer vision

A state detection device, computer vision technology, applied in traffic flow detection, computer parts, computing, etc., can solve problems such as large limitations, high implementation investment and maintenance costs, unfriendly roads and vehicles, etc.

A state detection device, computer vision technology, applied in traffic flow detection, computer parts, computing, etc., can solve problems such as large limitations, high implementation investment and maintenance costs, unfriendly roads and vehicles, etc.

CN102136194AActive Publication Date: 2011-07-27ZHEJIANG UNIV OF TECH
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  • Road traffic condition detection device based on panorama computer vision
  • Road traffic condition detection device based on panorama computer vision
  • Road traffic condition detection device based on panorama computer vision

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] refer to Figure 2 to Figure 12 , a road traffic state detection device based on panoramic computer vision, comprising a camera installed at each measuring point on each road on the road network, a microprocessor for evaluating the road traffic state according to the video data of the camera, said The microprocessor comprises microprocessor system hardware and microprocessor software, it is characterized in that: described microprocessor hardware is made up of CPU, image memory, input unit, display unit, storage unit, transmission unit, communication unit, video interface , RAM (Random Access Memory) and ROM (Read-only Memory), as attached Image 6 As shown; the camera device is connected to the microprocessor through the video interface, and the transmission unit sends the traffic state detection and calculation results to the signal light control unit and the traffic state release through the communication unit unit; the microprocessor software includes:

[0059] A ...

Embodiment 2

[0131] refer to figure 1 , Figure 3 ~ Figure 11 , the rest are exactly the same as in Embodiment 1, the difference is that an omnidirectional vision sensor placed above the middle of the intersection needs to be used to simultaneously detect the status of all intersection exits and the status of waiting vehicles at all intersection entrances, if a certain If there is congestion in the state of a crossroad exit, the signal light in this direction will be changed to a red light, so as not to cause greater congestion; Compared with other entrances, there are a large number of vehicles congested, and the green light time of this intersection should be extended appropriately to ease the congestion of this lane. figure 1 As shown, at this time, it is necessary to appropriately extend the green time of the north-south direction, and appropriately reduce the green time of the east-west direction.

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Abstract

The invention discloses a road traffic condition detection device based on panorama computer vision, comprising a camera device of each measuring point and a microprocessor, wherein the camera device is installed on each road on a road network; the microprocessor is used for evaluating road traffic condition according to the panorama video data of the camera device; and the microprocessor comprises a panorama image acquisition unit, a sampling point, a lane, a lane driving direction customization module, a road congestion state detection module and a road service level judgement module. The invention provides a road traffic condition detection device based on panorama computer vision, which has the advantages of wide detection range, high detection precision, good detection instantaneity and intuitional and clear detection result, is convenient to implement and is convenient to realize on an embedded system; in addition, the road traffic condition detection device has subjective perceptibility index data and objective perceptibility congestion data, and is convenient for each level of road network of a city to comprehensively evaluate the road traffic condition on the aspect of time and space.

Description

technical field [0001] The invention belongs to the application of panoramic computer vision sensor technology, digital image processing technology, embedded system, urban road digital coding technology and network communication technology in road traffic state detection, especially a road traffic state detection device based on panoramic computer vision . Background technique [0002] Today's traffic problems have become a global "urban problem", and traffic congestion is the main manifestation of the city's "traffic disease". The "cause" of urban traffic congestion stems from a variety of factors, and traffic congestion directly affects the quality of people's travel, especially those who use vehicles for transportation. Congested road vehicles, frequent traffic accidents, deteriorating traffic environment, energy shortage, and increasing environmental pollution. These increasingly serious traffic problems are related to the basic concepts of modern traffic, namely access...

Claims

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Application Information

Patent Timeline
27 Jul 2011
Publication
CN102136194A
IPC
G08G1/01; G08G1/07; G06K9/46; G06T7/00
Inventors
汤一平; 孟炎