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Method for high-precision positioning of automobile through scene recognition

A vehicle and scene technology, applied in satellite radio beacon positioning system, navigation through speed/acceleration measurement, photo interpretation, etc., can solve the problem of single image processing content, and achieve the effect of reducing cost pressure

Inactive Publication Date: 2017-05-10
CHINA FIRST AUTOMOBILE
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent Document 3, using image processing to identify the license plate to locate the car, the image processing content is single, and it is not a vehicle-mounted technology

Method used

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  • Method for high-precision positioning of automobile through scene recognition
  • Method for high-precision positioning of automobile through scene recognition
  • Method for high-precision positioning of automobile through scene recognition

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Experimental program
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Embodiment Construction

[0037] specific implementation plan

[0038] combine figure 1 A specific embodiment of high-precision positioning of a car using scene recognition will be described.

[0039] Step 1, establishment of feature point database

[0040] (1) Acquisition of characteristic target picture information. The vehicle-mounted terminal (GIC module) includes a satellite positioning unit, an inertial unit and a camera, and the camera is used to take pictures of characteristic targets at different locations, such as traffic facilities, traffic signs, road markings and roadside facilities Buildings, etc., the processor integrated in the vehicle terminal intercepts the feature target from the entire picture through image processing, and after the grid processing of the picture based on color difference, the Haar algorithm (rectangular feature of the input image) is applied to realize the image feature. Extract and use certain points of the feature target (such as the geometric center, etc.) as ...

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Abstract

The invention provides a method for high-precision positioning of an automobile through scene recognition. The method comprises steps as follows: a car captures a driving environment characteristic target in different positions through a car-mounted terminal, calculates the characteristic points (certain positions like geometrical center) of the characteristic target and uploads the characteristic points to a data center, the data center calculates the accurate position of the characteristic target based on different capturing positions of the same characteristic target, and the accurate position of the car is calculated according to the accurate position of the characteristic target. The car-mounted terminal integrating a camera, an inertia unit and a satellite positioning unit is used for acquiring the driving characteristic target of the car, image characteristic point extraction and information integration are performed, the position of the car can be calculated according to the position of the characteristic point, the position of the characteristic point is calculated by the data center, and data transmission between a car-mounted module and a data service center is realized. The car-mounted terminal is mounted above the middle of front windshield glass of the car.

Description

technical field [0001] The present invention relates to the technical field of automobiles, and more specifically, relates to the technical field of environment perception of automatic driving vehicles. Background technique [0002] With the rapid development of autonomous driving technology, the disadvantages of the traditional technical route of realizing autonomous driving through on-board sensing are gradually emerging. Using high-precision maps and cloud computing to provide sensing support for smart cars and reduce the pressure on on-board sensing will gradually become an inevitable direction and research focus. [0003] Patent Document 1 (CN2486402) car locator is an instrument installed on a car to determine the distance between the car and surrounding obstacles. It consists of two symmetrical light emitters (1), brackets (2) and rotating shafts (3) Composition, the centers of the two symmetrical light emitters (1) are provided with a laser channel hole (1-1), the l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/00G01C11/04G01C21/16G01S19/45G01S19/47
CPCG01C21/005G01C11/04G01C21/165G01S19/45G01S19/47
Inventor 邱少波张建国李红建刘斌吴杭哲和卫民
Owner CHINA FIRST AUTOMOBILE
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