Camera external parameter calibration system and method

A camera and external parameter technology, applied in image data processing, instruments, calculations, etc., can solve the problems of high cost, reduced precision, long time consumption, etc., and achieve the effect of simplifying the process of data acquisition and post-processing

Active Publication Date: 2020-10-16
ALIPAY (HANGZHOU) INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Calibration data collection and post-processing requires professional camera calibration personnel. For large-scale scenes, the number of cameras is large, and manual calibration of cameras takes a long time and costs a lot, and the accuracy may be reduced due to operational errors.

Method used

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  • Camera external parameter calibration system and method
  • Camera external parameter calibration system and method
  • Camera external parameter calibration system and method

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Embodiment Construction

[0035] The following description provides specific application scenarios and requirements of this specification, with the purpose of enabling those skilled in the art to manufacture and use the contents of this specification. Various local modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and embodiments without departing from the spirit and scope of the description. application. Accordingly, the description is not limited to the embodiments shown, but is to be accorded the widest scope consistent with the claims.

[0036] The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. For example, as used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. When used in this specification, the terms "comprisin...

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Abstract

The invention provides a camera external parameter calibration system and method. External parameters of a camera can be determined by using a first positioning base station, a second positioning basestation and a third positioning base station; only the first positioning base station, the second positioning base station and the third positioning base station need to be manually arranged at preset positions; therefore, a calculation device can calculate the external parameters of the camera according to the measurement results of the first positioning base station, the second positioning basestation and the third positioning base station. The operation process is simple and rapid, calibration can be completed by the ordinary personnel according to operation instructions without dependingon professional calibration personnel, the labor cost and the time cost are greatly saved, and the precision of external parameter calibration is improved.

Description

technical field [0001] This specification relates to the field of camera calibration, and in particular to a system and method for camera extrinsic calibration. Background technique [0002] Both unmanned supermarkets and offline new retail currently use machine vision as a technical solution for multi-target tracking and matching of people and goods. When laying the cameras in the scene, whether it is a monocular or a binocular camera, it is necessary to manually select reference points, manually collect calibration data, and perform manual data processing in the background to calibrate the internal / external parameters of the camera. Calibration data collection and post-processing requires professional camera calibration personnel. For large-scale scenes, the number of cameras is large, and manual calibration of cameras takes a long time and is costly. Moreover, the accuracy may be reduced due to operational errors. [0003] Therefore, there is a need for a camera extrinsi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/80
CPCG06T7/80G06T2207/30244
Inventor 李默
Owner ALIPAY (HANGZHOU) INFORMATION TECH CO LTD
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