Road sight distance detection method and device based on visual image

A visual image and detection method technology, which is applied in the direction of instruments, character and pattern recognition, computer components, etc., can solve the problems of model establishment complexity and limitation of use range, and achieve the effect of simple operation

Active Publication Date: 2017-03-15
TONGJI UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to provide a road sight distance detection method and system based on visual images, which overcomes the limitations of the range of sight distance detection technology in the prior art and the strong complexity of model building.

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  • Road sight distance detection method and device based on visual image
  • Road sight distance detection method and device based on visual image
  • Road sight distance detection method and device based on visual image

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Embodiment Construction

[0060] The present invention will be further described below in conjunction with the accompanying drawings.

[0061] The present invention provides a road line-of-sight detection method based on visual images, such as figure 1 As shown, the method includes the following steps:

[0062] S1. Acquire the driving image, driving parameters and camera parameters, wherein the driving image is an image taken from the position of the vehicle to the front of the vehicle during driving, the driving parameter is the driving parameter of the vehicle when the driving image is taken, and the camera parameter is the shooting image of the driving camera parameters.

[0063] In a specific embodiment, the inspectors use the GARMIN GDR35 driving recorder to continuously collect video information in front of the vehicle and within the driver's visual range during the driving process of the vehicle, and then import the video into the computer, and the computer can display it in frames. Get the vi...

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Abstract

The invention belongs to the technical field of road safety evaluation, and discloses a road sight distance detection method and device based on a visual image. The method comprises the steps: building the road sight distance detection device which comprises an image obtaining unit, an image coordinate determining unit, a road slope information calculation unit, an inverse perspective processing unit, a road length determining unit and a driving sight distance calculation unit; obtaining a driving image, driving parameters, and photographing parameters; continuously determining coordinates (c, r) of a lane in the driving image; continuously carrying out the inverse perspective transformation processing of the driving image according to the photographing parameters, and converting the coordinates (c, r) of the lane into inverse perspective lane coordinates (X, Z); continuously determining the length L<left> of a left road in front of a vehicle and the length L<right> of a right road in front of the vehicle according to the inverse perspective lane coordinates (X, Z); and finally determining a driving sight distance L according to the position of the vehicle on the lane, the length L<left> of the left road in front of the vehicle and the length L<right> of the right road in front of the vehicle.

Description

technical field [0001] The invention belongs to the technical field of road safety evaluation, and relates to a road sight distance detection method and device based on visual images. Background technique [0002] The driver's driving sight distance is an important condition to ensure driving safety, a quantitative index to evaluate the quality of the road visual environment, and an important prerequisite for improving vehicle safety. [0003] The current sight distance detection methods mainly include sight distance detection based on running vehicle speed, sight distance detection of different roads and vehicle types, and three-dimensional dynamic sight distance calculation of highways. These three methods can effectively obtain the driver's driving sight distance. [0004] The line-of-sight detection based on the running speed takes into account the actual driving state of the driver to a certain extent, which increases the practicability of the line-of-sight detection an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V20/588
Inventor 张兰芳陈雨人王瑞云王震宇
Owner TONGJI UNIV
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