Camera external parameter calibration method and device and electronic equipment

A calibration method and camera technology, applied in image data processing, instruments, calculations, etc., can solve problems such as non-convergence of calculation results, low accuracy of calculation results, and long calculation time

Active Publication Date: 2019-10-11
HANGZHOU HIKVISION DIGITAL TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] When using the above method to calibrate the camera extrinsic parameters, due to the need for iterative processing, the calculation process is unstable, the calculation take

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  • Camera external parameter calibration method and device and electronic equipment
  • Camera external parameter calibration method and device and electronic equipment
  • Camera external parameter calibration method and device and electronic equipment

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[0093] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0094] In order to improve the accuracy of the camera external parameter calibration result, embodiments of the present invention provide a camera external parameter calibration method, device and electronic equipment.

[0095] Hereinafter, a method for calibrating camera external parameters provided by an embodiment of the present invention will be introduced.

[0096] The execution subject of the camera external parameter calibration metho...

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Abstract

The embodiment of the invention provides a camera external parameter calibration method and device and electronic equipment, and the method comprises the steps: carrying out the distortion correctionof an original image of a calibration image based on the internal parameters of a camera, and obtaining a distortion correction image; obtaining pixel coordinates of four intersection points formed bythe four straight lines in the distortion correction image; and calibrating camera external parameters through a preset coordinate transformation strategy based on the pixel coordinates of the four intersection points. Through the scheme, the external parameter calibration speed of the camera and the accuracy of the calibration result can be improved.

Description

technical field [0001] The invention relates to the technical field of camera calibration, in particular to a camera external parameter calibration method, device and electronic equipment. Background technique [0002] Camera extrinsic parameters are a set of parameters that characterize the camera's position in the world coordinate system, rotation direction and other attributes, including the camera's roll angle, pitch angle, and yaw angle. Camera extrinsic parameter calibration is the process of obtaining camera extrinsic parameters. In the field of visual measurement, camera extrinsic calibration is a very critical link, and its calibration accuracy and stability will directly affect the accuracy of visual measurement results. [0003] Vision measurement technology has a wide range of application scenarios, for example, it can be applied to product quality inspection, vehicle monitoring and other scenarios. At present, for the scene of vehicle monitoring, the correspond...

Claims

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Application Information

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IPC IPC(8): G06T7/80
CPCG06T7/80G06T2207/30252G06T7/00
Inventor 冉盛辉
Owner HANGZHOU HIKVISION DIGITAL TECH
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