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A road sight distance detection method and device based on visual images

A technology of visual images and detection methods, applied in the fields of instruments, calculations, characters and pattern recognition, etc., can solve the problems of the complexity of model establishment and the limitation of the scope of use, and achieve the effect of simple operation

Active Publication Date: 2019-08-20
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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  • A road sight distance detection method and device based on visual images
  • A road sight distance detection method and device based on visual images
  • A road sight distance detection method and device based on visual images

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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 visual image-based road sight distance detection method and device, which include an image acquisition unit, an image coordinate determination unit, a road slope information calculation unit, an inverse perspective processing unit, and a road length determination unit. unit and the road sight distance detection device of the driving sight distance calculation unit to obtain the driving image, driving parameters and camera parameters; continue to determine the lane line coordinates (c, r) in the driving image; continue to reverse the driving image according to the camera parameters Perspective transformation processing, converting the lane line coordinates (c, r) into reverse perspective lane line coordinates (X, Z); continue to determine the length L of the left road in front of the vehicle according to the reverse perspective lane line coordinates (X, Z) 左 and the length of the road on the right side in front of the vehicle L 右 ;Finally, according to the position of the vehicle on the lane and the length of the road on the left side in front of the vehicle L 左 and the length of the road on the right side in front of the vehicle L 右 Determine the driving sight distance L.

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 Patents(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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