Vehicle ranging and collision early warning method based on monocular vision

A monocular vision, collision warning technology, applied in anti-collision systems, image data processing, instruments, etc., can solve the problem of lack of monocular ranging devices, and achieve the effect of increasing the dynamic range and enhancing the overall contrast of the image

Inactive Publication Date: 2016-05-11
NORTHEASTERN UNIV
View PDF2 Cites 44 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the current mobile electronic devices, there is still a lack of monocular ra

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vehicle ranging and collision early warning method based on monocular vision
  • Vehicle ranging and collision early warning method based on monocular vision
  • Vehicle ranging and collision early warning method based on monocular vision

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047]Below in conjunction with accompanying drawing and example the present invention will be further described:

[0048] The ranging and alarm method based on monocular vision includes image acquisition and preprocessing, target detection, target ranging and safety warning. Among them, the target of the present invention is the vehicle on the road. figure 1 The flow chart of the realization process of distance measurement and collision alarm based on monocular vision is given.

[0049] Before target recognition, the image should be collected and preprocessed, including the following steps:

[0050] Step 1: Fix the monocular camera in front of the vehicle, determine its height from the ground and the angle between its axis and the horizontal direction, that is, the pitch angle.

[0051] Step 2: Adjust the pitch angle, height from the ground, installation position, and deflection angle of the camera according to the video captured by the camera, so that the camera can obtain...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a vehicle ranging and collision early warning method based on monocular vision. Firstly, a target dynamic video is collected through a monocular camera, each frame of the collected video is subjected to image preprocessing, then, the characteristics of an image is compared with positive sample characteristics obtained by training to detect a target, and the target is marked by a rectangular frame. The midpoint coordinate of the bottom edge of the rectangular frame is obtained, and a practical distance between two vehicles can be obtained according to pinhole imaging and the geometric proportion relationship of similar triangles; and according to the distance change of two vehicles within a given time, the relative speed is calculated, the collision time is calculated by combining with the distance, and a voice alarm is given when the time is smaller than the collision safety time so as to prompt a drive to adopt a corresponding measure. The vehicle ranging and collision early warning method only adopts one camera to collect videos, so that equipment is simple, an adopted target detection method has the advantages of being high in accuracy and instantaneity, a ranging method is simple and effective, timely early warning is realized, and traffic accidents are effectively avoided.

Description

technical field [0001] The invention belongs to the field of automobile auxiliary safe driving, and in particular relates to a method for vehicle ranging and collision warning based on monocular vision. Background technique [0002] With the rapid development of my country's economy and technology, a huge market with great development potential has formed in the field of automobiles and vehicle-mounted equipment. According to the data of the National Bureau of Statistics, at the end of 2012, the number of civilian vehicles in the country reached 120.89 million, an increase of 14.3% over the end of the previous year. At the same time, the problem of driving safety has become increasingly prominent, and traffic accidents have occurred frequently, which has become a hot spot of concern to the whole society. In 2013, more than 60,000 people were killed or injured due to traffic accidents in my country. If the driver knows the hidden dangers 1.0s earlier, 90% of traffic acciden...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06K9/66G06T7/00G08G1/16
Inventor 孙鹏飞张云洲李继凡孟蕾
Owner NORTHEASTERN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products