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Camera calibration method of parking system

A calibration method and technology for a parking system, applied in image analysis, image data processing, instruments, etc., can solve the problems of tediousness, accuracy changes, and difficulty in obtaining parameters.

Active Publication Date: 2017-03-08
FORYOU GENERAL ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, camera calibration is a complex and cumbersome task, and its calibration accuracy varies with specific applications
The existing camera calibration method, the calculation process is complex, involving complex calculations and the acquisition of complex matrix parameters, and many parameters are difficult to obtain, making camera calibration difficult

Method used

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Embodiment Construction

[0025] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings. The accompanying drawings are only for reference and description, and do not constitute a limitation to the protection scope of the present invention.

[0026] Embodiments of the present invention provide a parking system camera calibration method, including:

[0027] Step 1. Draw the boundary line of the shooting blind zone on the road according to the minimum recognition distance L of the parking space.

[0028] In the parking space detection method based on image recognition, the installation angle of the parking camera needs to be inclined to the ground at a certain angle in order to capture the parking space marking lines on the ground. The tilt angle of the parking camera should not be too large or too small. It should be determined according to the vertical distance between the lower edge of the nearest parking space and the camera that can...

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Abstract

The invention provides a camera calibration method of a parking system. The method comprises: S1, a shooting blind zone boundary line is drawn on a pavement according to a minimum parking space identification distance L; S2, the angle of a parking camera is adjusted to be at a predetermined angle theta; S3, a calibration grid is drawn in a preset pavement range; S4, the calibration grid is converted into an image coordinate system; and S5, a relationship between a position of a sub calibration grid unit C'mn corresponding to a sub calibration grid unit Cmn in the image coordinate system and a corresponding distance value is determined and is stored. Using the method, steps for camera calibration are simplified and the efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of camera calibration, in particular to a camera calibration method for a parking system. Background technique [0002] In the process of identifying parking spaces based on cameras, camera calibration is inevitably involved. The purpose is to accurately identify parking spaces and calculate the relative distance between parking spaces and cars. Moreover, camera calibration is a complex and cumbersome task, and the calibration accuracy varies with specific applications. The existing camera calibration method has a complex calculation process, involving complex calculations and the acquisition of complex matrix parameters, and many parameters are difficult to obtain, which makes camera calibration difficult. [0003] Therefore, the prior art needs to be further improved. Contents of the invention [0004] The invention provides a method for calibrating a camera of a parking system, aiming at solving the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/80
Inventor 盛亮谭安助姚雪飞
Owner FORYOU GENERAL ELECTRONICS
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