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A Pedestrian Early Warning Method and System Based on Infrared Imaging

An infrared imaging and infrared imaging technology, which is applied to instruments, computing, character and pattern recognition, etc., can solve the problem of inaccurate infrared ranging, and achieve the effect of reducing judgment time, enhancing driving safety, and reducing reaction time.

Active Publication Date: 2022-01-21
武汉轩辕智驾科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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  • A Pedestrian Early Warning Method and System Based on Infrared Imaging
  • A Pedestrian Early Warning Method and System Based on Infrared Imaging

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specific Embodiment 1

[0060] According to an 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 assembly is used to collect infrared images of the environment around the vehicle. The main control system uses the AdaBoost cascader detection algorithm to detect infrared images to obtain pedestrian objectives, using pedestrians approximation, and cross the early warning algorithm. Judging and crossing judgment, obtaining a dangerous pedestrian objective, and performs corresponding warning for different dangerous pedestrian objectives, using the airflow information of the actuator array collected in front of the artificial side line unit, the airflow information includes a straight line on a front line on a straight line. The corresponding effective pressure is a straight line in a dynamic infrared image, and the pressure sensor array includes at least a first pressure se...

specific Embodiment 2

[0092] Working method of pedestrian warning system based on infrared imaging, including the following steps:

[0093] S1: Get the dynamic infrared image of the field of view, and obtain pedestrian targets and its frame dynamics based on the dynamic infrared image, the timing frame dynamic is the position variation and area of ​​the pedestrian target in different frames of the dynamic infrared image;

[0094] S2: Dynamically obtain dangerous pedestrian objectives according to pedestrian objectives and their timing frame;

[0095] S3: Gets the airflow information affected by the hazardous objective, the airflow information includes a plurality of effective pressure on a front line, and the speed and distance of the dangerous target is obtained according to the airflow information, and the speed and distance from the hazard target are obtained. The collision warning signal is obtained according to the collision time.

[0096] The step S1 includes:

[0097] S11: Get an infrared pictur...

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Abstract

The invention discloses a pedestrian target prompting and collision warning system based on infrared spectrum imaging and artificial sideline technology. The dynamic infrared image of the field of view scene is collected through an infrared component, and the pedestrian target in the infrared image of each time frame is screened out by using the Adaboost algorithm. Make the early warning more targeted, and further use the crossing algorithm and the approximation algorithm to screen out dangerous targets from pedestrian targets, supplemented by the artificial sideline unit to sense the distance and speed of the dangerous target, and calculate the collision time between the vehicle and the dangerous target. When the time is less than the specified threshold, a collision warning prompt will be given. The invention is especially suitable for crowd gathering areas such as business districts and traffic intersections, and solves the problem that the characteristics of pedestrians change greatly and it is difficult to detect and give early warning.

Description

Technical field [0001] The present invention belongs to the safe driving area, and more particularly to a safety early warning system based on infrared imaging. Background technique [0002] At present, in safe driving, visible light imaging technology and computer vision technology have been mature, but due to the characteristics of visible light imaging, the imaging effect in harsh driving environment such as night, rainy, and smog is poor, and these harsh driving environments often It is a dangerous driving environment, so it is necessary to develop a driving assistance system for harsh climate environments such as nighttime. Infrared thermal imaging can provide a better driving environment in a night and foggy day, but the infrared thermal imaging is unable to judge the distance of the front pedestrian target, and cannot provide accurate alarm prompts. [0003] With the development of electronic technology, the image processing-based pedestrian target detection system has gra...

Claims

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Application Information

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Patent Type & Authority Patents(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