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Zoom lens calibration method and device, computer equipment and storage medium

A zoom lens and calibration method technology, applied in the directions of calculation, image analysis, image enhancement, etc., can solve the problems of heavy workload and cumbersome zoom lens calibration steps, and achieve the purpose and advantages of simple and easy-to-understand, dynamic and flexible calibration of focal length intervals. Effect

Pending Publication Date: 2022-06-17
SUNNY OPTICAL ZHEJIANG RES INST CO LTD
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Problems solved by technology

[0005] Based on the shortcomings of the prior art, the present invention provides a zoom lens calibration method, device, computer equipment, and storage device to at least solve the problems of cumbersome calibration steps and heavy workload in the existing zoom lens

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  • Zoom lens calibration method and device, computer equipment and storage medium
  • Zoom lens calibration method and device, computer equipment and storage medium
  • Zoom lens calibration method and device, computer equipment and storage medium

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Embodiment Construction

[0048] For a clearer understanding of the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below with reference to the accompanying drawings and embodiments.

[0049] Unless otherwise defined, the technical or scientific terms involved in this application shall have the general meanings understood by those with ordinary skills in the technical field to which this application belongs. Words like "a", "an", "an", "the", "these" and the like in this application do not denote quantitative limitations, and they may be singular or plural. The terms "comprising", "comprising", "having" and any variations thereof referred to in this application are intended to cover non-exclusive inclusion; for example, processes, methods and The system, product or device is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules inherent to t...

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Abstract

The invention provides a zoom lens calibration method and device, computer equipment and a storage device, and the method comprises the steps: determining a focal length interval corresponding to each calibration based on the hyperfocal length of a to-be-calibrated lens and the precision requirement of field angle detection; determining a focal length corresponding to each calibration based on the focal length interval; determining the object distance corresponding to each calibration based on the corresponding relationship between the focal length and the object distance of the to-be-calibrated lens; and calibrating the internal parameters and distortion parameters of the to-be-calibrated lens corresponding to the different object distances based on the images shot under the different object distances. The calibration focal length interval is matched with the precision requirement of field angle detection, and the problem that the fixed calibration focal length interval is too large or too small in the prior art is solved.

Description

technical field [0001] The present application relates to the technical field of image capturing and processing, and in particular, to a zoom lens calibration method, device, computer equipment, and storage medium. Background technique [0002] In image capture, detection, and processing, it is necessary to apply a zoom lens to achieve autofocus. As the focal length of the lens changes during the focusing process, the internal parameters also change, which affects the accuracy of the detection results of other detection items using internal parameters, such as field angle detection and lens distortion correction. In order to obtain high-precision field angle detection results and correct distortion correction effects, it is necessary to obtain the internal parameters and distortion coefficients of the lens in the current focusing state. [0003] The internal parameters and distortion coefficients are obtained by calibrating the lens. The existing zoom lens calibration metho...

Claims

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Application Information

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IPC IPC(8): G06T7/80
CPCG06T7/80G06T2207/10004
Inventor 戴思勰孙杰
Owner SUNNY OPTICAL ZHEJIANG RES INST CO LTD
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