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Imaging equipment calibration method and device

An imaging device and calibration method technology, applied in the computer field, can solve problems such as being easily affected by human factors, high complexity of camera calibration, and difficulty in ensuring the accuracy of camera calibration, so as to achieve simple and efficient camera calibration process and accurate camera calibration results , The matching process is simple and efficient

Active Publication Date: 2020-08-04
ALIBABA GRP HLDG LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] This application provides a method for calibrating imaging equipment to solve the problems that the existing camera calibration has high complexity, is easily affected by human factors, and is difficult to guarantee the accuracy of camera calibration

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  • Imaging equipment calibration method and device
  • Imaging equipment calibration method and device
  • Imaging equipment calibration method and device

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Embodiment Construction

[0065] In the following description, many specific details are explained in order to fully understand this application. However, this application can be implemented in many other ways different from those described here, and those skilled in the art can make similar promotion without violating the connotation of this application. Therefore, this application is not limited by the specific implementation disclosed below.

[0066] For the calibration scene of the imaging device, in order to reduce the complexity of the matching process between the three-dimensional space point and the image pixel point in the calibration process of the imaging device, and to improve the calibration efficiency and accuracy of the imaging device, this application provides an imaging device calibration method , The imaging equipment calibration device and electronic equipment corresponding to the method. The following provides embodiments to describe the method, device and electronic equipment in detai...

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Abstract

The invention discloses an imaging equipment calibration method and device. The method comprises the following steps: obtaining first motion trail data of the calibration reference object in a real space and second motion trail data of the calibration reference object in video data shot by the to-be-calibrated imaging equipment, wherein the second motion trail data is matched with the first motiontrail data; and calibrating the to-be-calibrated imaging equipment according to the first motion trail data and the second motion trail data. According to the method, camera calibration is carried out in a manner of matching association points between real space coordinates and image coordinates in the prior art, and camera calibration is carried out in a manner of matching tracks in real space with tracks of image coordinates. The track matching process is simpler and more efficient than the matching process of the associated points, and the requirement on the time precision is lower, so that the camera calibration process is simpler and more efficient, and the camera calibration result is more accurate.

Description

Technical field [0001] This application relates to the field of computer technology, in particular to a calibration method of imaging equipment. This application also relates to an imaging device calibration device and an electronic device. Background technique [0002] In computer vision, image measurement, three-dimensional scene reconstruction and other applications, in order to correct the lens distortion of the camera, determine the conversion relationship between the physical size in the three-dimensional space and the pixel size of the image, and determine the space object (or a point on the surface of the space object) ) The relationship between the three-dimensional geometric position of the spatial object (or a point on the surface of the spatial object) in the corresponding pixel point in the image requires a geometric model of camera imaging, and the parameters of the geometric model are the camera parameters. The process of solving this parameter is camera calibrati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/80G06T7/246G06K9/62
CPCG06T7/80G06T7/246G06T2207/10016G06T2207/30241G06F18/22
Inventor 孟伟
Owner ALIBABA GRP HLDG LTD