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Real-time speed measurement method based on vehicle-mounted sensor video streaming matching

A vehicle-mounted sensor and video streaming technology, applied in road vehicle traffic control systems, instruments, closed-circuit television systems, etc., can solve the problems of tire wear, tire pressure, error, traffic accidents, etc.

Inactive Publication Date: 2014-03-26
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the manufacturing and assembly errors of vehicle sensors, tire wear, and tire pressure that do not meet the regulations, there may be errors between the vehicle speed measurement results and the actual vehicle speed, which may easily cause traffic accidents.

Method used

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  • Real-time speed measurement method based on vehicle-mounted sensor video streaming matching
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  • Real-time speed measurement method based on vehicle-mounted sensor video streaming matching

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0026] The present invention provides a kind of real-time velocity measuring method based on vehicle-mounted sensor video stream matching, carries out under computer hardware environment, Windows2000 / XP; any language environment software such as matlab or C language or C++ all can be realized, and the present embodiment adopts matlab Language, use the ATRV type ground unmanned autonomous vehicle and camera to conduct experiments, the process is as follows figure 1 As shown, the specific steps are as follows:

[0027] Step 1. Install the camera on the side of the body of the ATRV ground unmanned autonomous vehicle. The lens is oriented perpendicular to the heading of the vehicle. At t 1 , t 2 The video images are collected at each time, and at t 1 The image collected at time is defined as the reference image, at t 2 The image collected at any time is de...

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Abstract

The invention discloses a real-time speed measurement method based on vehicle-mounted sensor video streaming matching. The method includes the steps that the number of movement pixels of one corner point of the same target object in two images shot by a vehicle-mounted camera is utilized to conduct reverse derivation on driving displacement of a vehicle within the time interval of the two images, the driving speed of the vehicle is acquired, and then real-time speed information is provided for a driver. By the utilization of the method, the vehicle speed can be monitored only by installing one vehicle-mounted camera, the influences of manufacturing and assembly errors of the vehicle and tire wear problems on vehicle speed measurement do not exist, and the method is convenient to conduct and feasible.

Description

technical field [0001] The invention belongs to the technical field of digital image processing, pattern recognition and system identification, and specifically relates to a real-time speed measurement method based on video stream matching of vehicle sensors. Background technique [0002] At present, there are many vehicle speed measurement methods, which can be roughly divided into non-vehicle speed measurement methods and vehicle speed measurement methods. The off-vehicle speed measurement methods mainly include radar speed measurement, laser speed measurement and video speed measurement. Among them, the video speed measurement method specifically processes and analyzes video signals through software algorithms, and usually obtains reference objects from video images and calculates reference objects. The number of pixels that the object moves within a certain period of time, and then convert the number of pixels to the actual distance, and finally calculate the moving spee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18G06T7/20G08G1/052
Inventor 闫莉萍孙初雄王晓林夏元清王美玲付梦印
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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