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A vehicle designated position parking method and system based on road surface feature points

A technology for specifying locations and feature points, used in satellite radio beacon positioning systems, radio wave measurement systems, measurement devices, etc., and can solve problems such as low efficiency, quality cannot be guaranteed, and labor costs are high.

Active Publication Date: 2019-06-28
WUHAN KOTEI TECH CORP
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Problems solved by technology

This manual production method is cumbersome to operate, inefficient, unable to guarantee quality, and the labor cost is very high

Method used

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  • A vehicle designated position parking method and system based on road surface feature points
  • A vehicle designated position parking method and system based on road surface feature points
  • A vehicle designated position parking method and system based on road surface feature points

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Embodiment Construction

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the invention.

[0028] Such as figure 1 and figure 2 As shown, the embodiment of the present invention provides a method for parking a vehicle at a specified location based on road surface feature points, and the method for parking a vehicle at a specified location based on road surface feature points includes the following steps:

[0029] S1. Collect images containing nearby road signs at each parking position, extract reference feature points, calculate the homography matrix from the ground plane of each parking position to the pixel plane of the vehicle camera according to the checkerboard diagra...

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Abstract

The invention discloses a vehicle designated position parking method and system based on road surface feature points. The method comprises the following steps: calculating a homography matrix from a ground plane to a camera pixel plane of each parking position according to a chessboard chart, collecting image reference feature points containing road signs near corresponding vehicle positions, andthen manufacturing and constructing a sample library by combining various pieces of information of the parking positions; Screening and matching the current feature point of the real-time image with acorresponding feature point in a sample library; Calculating the relative position relation between the current position of the camera and an image reference point by combining the screened and matched current feature points with a homography matrix from the ground plane to the image plane; and finally, adding the obtained relative position relationship to the known GPS road sign position point in the sample library to obtain the absolute position point of the current vehicle. Therefore, the absolute position of the current vehicle is obtained by calculating the relative relation between theroad sign and the vision, accurate parking is achieved, the sample library construction process is greatly simplified during image matching, and operability is improved.

Description

technical field [0001] The invention relates to a method and system for parking a vehicle at a specified location based on road surface feature points, and relates to the cross technical fields of image recognition and machine vision. Background technique [0002] In intelligent driving, vehicle location information represents the current location status of the vehicle on the road or in the environment, and is an important reference for answering "where is the vehicle". High-precision position information is divided into absolute position information and relative position information. Absolute position information is generally acquired by the Global Positioning System (GPS), with a certain point as the reference origin, and the absolute position is expressed by latitude and longitude elevation information. Obtaining absolute position information through GPS is an important way for intelligent driving. Generally, the higher the accuracy of GPS position, the higher the price....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/73G01S19/42
Inventor 苏晓聪潘尧
Owner WUHAN KOTEI TECH CORP
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