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Method, system, device and storage medium for determining camera intrinsic parameter error

A camera and error technology, applied in image analysis, image enhancement, instruments, etc., can solve problems such as unsuitable and fast screening of unqualified cameras, and achieve the effect of fast processing speed and low difficulty

Active Publication Date: 2022-07-15
GUANGZHOU WERIDE TECH LTD CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to overcome at least one defect of the above-mentioned prior art, and provides a method, system, device and storage medium for determining camera internal reference errors, which are used to solve the problem that the traditional camera calibration method is not suitable for quickly screening unqualified cameras on the production line. camera problem

Method used

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  • Method, system, device and storage medium for determining camera intrinsic parameter error
  • Method, system, device and storage medium for determining camera intrinsic parameter error
  • Method, system, device and storage medium for determining camera intrinsic parameter error

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Embodiment 2

[0088] Based on the same idea as the previous embodiment, this embodiment provides a system for determining camera intrinsic parameter errors, which is used for screening cameras with problems. Problematic cameras refer to cameras with large differences in internal parameters after the assembly is completed and the AA is actually involved in the design. The camera generally corrects the captured image according to its design internal parameters. If the camera has a large difference between the actual internal parameters and the design internal parameters, the image captured by the camera has a high degree of distortion and does not meet the requirements for use.

[0089] like Figure 8 As shown, the system for determining the camera intrinsic parameter error includes:

[0090] An image acquisition module 100, configured to acquire an image of a reference object with geometric constraints captured by a camera;

[0091] The feature calculation module 200 is used to calculate t...

Embodiment 3

[0109] Based on the same idea as the previous embodiment, this embodiment also provides a computer device, including a memory and a processor, where the memory stores a computer program, and the processor implements the determination in the first embodiment when executing the computer program The method for camera intrinsic parameter error has corresponding functions and beneficial effects.

Embodiment 4

[0111] Based on the same idea as the previous embodiment, the present embodiment also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the method for determining the camera internal parameter error described in the first embodiment , with corresponding functions and beneficial effects.

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Abstract

The present invention provides a method, system, device and medium for determining an error of a camera's internal parameters. The method includes: using a camera to photograph a reference object with geometric constraints, and obtaining an image of the reference object; according to the image and the design internal parameters of the camera , calculate the feature of the image; determine the degree to which the feature of the image conforms to the geometric constraints of the reference object, so as to determine the error of the camera's actual internal parameters involved in the design of the camera. The method provided by the present invention obtains a limited data set of the image from the photographed reference object image, calculates the characteristics of the image based on the limited data set, and uses the geometric constraints of the reference object and the characteristics of the image to determine the actual internal parameters involved in the design of the camera. Error, the method has fast processing speed, low difficulty, no need to use professional equipment for calibration, and can quickly and preliminarily screen out problematic cameras.

Description

technical field [0001] The present invention relates to the field of camera detection, and more particularly, to a method, system, device and storage medium for determining camera intrinsic parameter errors. Background technique [0002] In the production process of the camera module, the parts of the camera module are prone to slight errors in the process of assembling and combining, and the accumulation of multiple errors will have a certain impact on the camera. Therefore, the production of the camera module needs to go through AA (ActiveAlignment, Active calibration) process. Generally speaking, the actual internal parameters (internal parameter matrix and distortion coefficient) of the camera module after AA will not be much different from the design internal parameters of the camera module, with some fluctuations. It indicates that there is a problem in the AA process of the camera module, and the camera module needs to be quickly detected and rejected on the producti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/80G06T5/00
CPCG06T7/80G06T5/006G06T2207/10004
Inventor 宋阳谢非徐立人韩旭
Owner GUANGZHOU WERIDE TECH LTD CO
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