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A method for preventing rear-end collision of automobile

An anti-rear collision and car technology, applied in the field of computer vision and inertial navigation, can solve the problem of not getting the distance information of the car, etc., and achieve the effect of fast calculation speed, small calculation amount and high reliability

Inactive Publication Date: 2021-02-09
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the anti-rear-collision early warning system based on image recognition technology adopted in this patent document is too simple and fails to make full use of the large amount of information provided by the image. distance information in

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  • A method for preventing rear-end collision of automobile
  • A method for preventing rear-end collision of automobile
  • A method for preventing rear-end collision of automobile

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with specific embodiment:

[0038] See attached figure 1 As shown, a kind of automobile rear-end collision prevention method described in the present embodiment comprises the following steps:

[0039] (1) Calibrate the camera;

[0040] (1 use the camera installed in the car to shoot multiple checkerboard diagrams containing multiple corner points;

[0041] (2 Use the API in OpenCV (a cross-platform computer vision library based on BSD license (open source)) to calibrate the camera to obtain the internal parameter f of the camera x , f y , cx and cy, where f x is the horizontal physical length of each pixel in the camera coordinate system; f y is the longitudinal physical length of each pixel in the camera coordinate system; cx and cy are the main point coordinates;

[0042] (3 adjust the camera, record the pitch angle α of the camera at this time, the yaw angle β, the height h, the transformation...

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Abstract

The invention relates to a rear collision avoidance method for an automobile. The method comprises the following steps of: 1) calibrating a camera; 2) identifying the distance of front and back automobiles in each image acquired by the automobile in continuous two frame images and acquiring the time interval between the continuous two frame images so as to solve the current relative speed of the two automobiles front and back; 3) acquiring the current acceleration and the current travelling speed of the automobile from an inertial navigation system and solving the safe distance of the two automobiles according to the current traveling speed; 4) if the distance in the second frame image is smaller than the safe distance, entering the step 5), otherwise, entering next frame image processing; 5) integrating the safe distance at the relative speed, the current acceleration and the current speed of the front and back automobiles and the distance at the second frame image to judge whether the distance between the front and back automobiles has the hidden danger of rear collision and immediately and continuously sending alarm; and 6) repeating the steps 2)-5) to till the automobile stops. The method provided by the invention has the advantages of being high in reliability and accuracy, fast in alarm sending speed and etc.

Description

technical field [0001] The invention relates to the fields of computer vision and inertial navigation, in particular to an automobile rear-end collision prevention method. Background technique [0002] With the continuous improvement of people's living conditions, cars have gradually entered thousands of households, bringing great convenience to people's travel. But along with the continuous increase of automobiles, the pressure on traffic is also increased. Drivers often increase the accelerator to drive for time, so that rear-end collisions occur from time to time. [0003] In order to judge whether there is a hidden danger of rear-end collision, the existing technology uses the image information provided by the camera installed on the car to detect, thereby giving an alarm message. [0004] For example, in the patent document (CN106080381A, an early warning system for preventing rear-end collisions of automobiles based on image recognition and detection), a method for se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/095B60W50/14B60Q9/00
CPCB60Q9/008B60W30/0953B60W50/14B60W2520/10B60W2520/105B60W2554/00B60W2554/801
Inventor 刘怡俊张文德王峰
Owner GUANGDONG UNIV OF TECH
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