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Pedestrian early-warning method and system based on infrared imaging

A technology of infrared imaging and infrared imaging, which is applied in the direction of instruments, character and pattern recognition, computer components, etc., can solve the problems of inaccurate infrared ranging, and achieve the effects of reducing judgment time, avoiding safety accidents, and optimizing information

Active Publication Date: 2018-07-06
武汉轩辕智驾科技有限公司
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AI Technical Summary

Problems solved by technology

[0005] At the same time, in order to solve the problem of inaccurate infrared ranging in the prior art, the present invention assists the detection of pedestrian targets in front with the artificial side line controller, and senses the position and speed of pedestrian targets ahead through pressure changes. When the collision time with pedestrian targets ahead When it is less than the specified threshold, a collision alarm prompt will be given

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  • Pedestrian early-warning method and system based on infrared imaging

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specific Embodiment 1

[0059] According to one embodiment of the present invention, a pedestrian warning system based on infrared thermal imaging and artificial side line technology is provided, such as figure 1 As shown, the infrared components are used to collect infrared images of the surrounding environment of the vehicle. The main control system uses the Adaboost cascade classifier detection algorithm to detect the infrared images to obtain pedestrian targets, and uses the pedestrian approach and crossing warning algorithms to approach pedestrians. Judgment and crossing judgment, get dangerous pedestrian targets, and make corresponding early warnings for different dangerous pedestrian targets, use the pressure sensor array of the artificial side line unit to collect the airflow information in front of the car, the airflow information includes different positions on a straight line ahead The corresponding effective pressure, the straight line is a straight line in the dynamic infrared image, the ...

specific Embodiment 2

[0090] A working method of a pedestrian warning system based on infrared imaging, comprising the following steps:

[0091] S1: Obtain a dynamic infrared image of the field of view, and obtain a pedestrian target and its time frame dynamics according to the dynamic infrared image, the time frame dynamics being the position change and area change of the pedestrian target in different frames of the dynamic infrared image;

[0092] S2: Dynamically obtain dangerous pedestrian targets according to pedestrian targets and their time frames;

[0093] S3: Obtain the airflow information affected by the dangerous target, the airflow information includes multiple effective pressures on a straight line ahead, obtain the speed and distance of the dangerous target according to the airflow information, and obtain the collision time according to the speed and distance of the dangerous target , and obtain a collision warning signal according to the collision time.

[0094] Said step S1 comprise...

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Abstract

The invention discloses a pedestrian target prompting and collision early-warning system based on an infrared spectral imaging and artificial lateral line technology. Dynamic infrared images of a visual field scene by means of an infrared assembly, pedestrian targets in the infrared image of each time frame are screened by utilizing an Adaboost algorithm, so that the early warning is more targeted, a dangerous target is screened from the pedestrian targets by further utilizing a traversing algorithm and an approximation algorithm, a distance and a speed of the dangerous target are sensed withthe assistance of an artificial lateral line unit, a collision time of a vehicle and the dangerous target is calculated, and a collision early-warning prompt is given when the collision time is less than a specified threshold value. A pedestrian early-warning method and a pedestrian early-warning method system disclosed by the invention are especially suitable for crowd-gathering areas such as a commercial area and a traffic intersection, and solve the problems that pedestrian features change greatly and are difficult to detect and warn in advance.

Description

technical field [0001] The invention belongs to the field of safe driving, and more specifically relates to a safety early warning system based on infrared imaging. Background technique [0002] At present, in terms of safe driving, visible light imaging technology and computer vision technology are relatively mature, but due to the characteristics of visible light imaging, the imaging effect in harsh driving environments such as night, rainy days, and haze is poor, and these harsh driving environments are often It is a dangerous driving environment, so it is necessary to develop a driving assistance system for harsh weather environments such as night. Infrared thermal imaging can provide a better driving environment at night and in foggy conditions, but infrared thermal imaging cannot judge the distance of pedestrians and targets ahead, and cannot provide accurate alarm prompts. [0003] With the development of electronic technology, the pedestrian target detection system ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00B60W30/08
CPCB60W30/08G06V40/10G06V20/20
Inventor 潘想邱佳杰黄立胡艳山
Owner 武汉轩辕智驾科技有限公司
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