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A real-time speed measurement method based on vehicle sensor video stream matching

A vehicle-mounted sensor and video streaming technology, applied in the field of pattern recognition and system identification, and digital image processing, can solve problems such as tire wear, tire pressure, error, traffic accidents, etc.

Inactive Publication Date: 2017-01-11
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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  • A real-time speed measurement method based on vehicle sensor video stream matching
  • A real-time speed measurement method based on vehicle sensor video stream matching
  • A real-time speed measurement method based on vehicle sensor video stream matching

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Embodiment Construction

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

[0026] The present invention provides a real-time speed measurement method based on vehicle-mounted sensor video stream matching, which is carried out in a computer hardware environment, Windows 2000 / XP; matlab or C language or C++ and other language environment software can be implemented. This embodiment adopts Matlab language, using ATRV-type ground unmanned autonomous vehicles, cameras for testing, 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 type ground unmanned autonomous vehicle, the lens orientation is perpendicular to the heading of the vehicle, at t 1 , T 2 Collect video images at any time, at t 1 The image collected at the moment is defined as the reference image, at t 2 The image collected at the moment is defined as the image to be registered, and the 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 related technical fields of digital image processing, pattern recognition and system recognition, and particularly 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-based speed measurement methods and vehicle-mounted speed measurement methods. The non-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 the video signal through software algorithms, usually obtaining a reference object from the video image, and calculating the reference The number of pixels that the object moves in a certain period of time, and then convert the number of pixels to the actual distance, and finally calculate th...

Claims

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Application Information

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Patent Type & Authority Patents(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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