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Period extraction method and device, computer equipment and readable storage medium

An extraction method and vertical direction technology are applied in the fields of computer equipment and readable storage media, devices, and periodic extraction methods, and can solve the problems of inconvenient operation, reduced detection efficiency, inability to calculate, etc., so as to improve extraction efficiency and avoid cumbersome effect

Pending Publication Date: 2022-01-14
CHENGDU UNION BIG DATA TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, at present, many display panel manufacturers cannot directly calculate the cycle of periodic features in the image based on the image, but manually set the cycle. Once the process changes or the product is different, it needs to be reset, which is extremely inconvenient to operate and reduces the detection rate. s efficiency

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  • Period extraction method and device, computer equipment and readable storage medium
  • Period extraction method and device, computer equipment and readable storage medium
  • Period extraction method and device, computer equipment and readable storage medium

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Embodiment Construction

[0042] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

[0043] Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary ski...

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Abstract

The invention provides a period extraction method and device, computer equipment and a readable storage medium. The method comprises the following steps: acquiring an image of a display panel to be detected; wherein the image comprises characteristic areas which are distributed periodically; the feature area comprises a key structure on the display panel to be detected; preprocessing the image to obtain a binary image; wherein the binary image comprises a first pixel point and a second pixel point; the second pixel point corresponds to the feature area; and performing autocorrelation analysis on all the second pixel points, and extracting the period of the feature area. Compared with the mode of manually setting the period in the prior art, the period of the image can be rapidly, accurately and automatically extracted based on self-phase analysis of key features in the image, the complexity of manually setting the period is avoided, the extraction efficiency is improved, and the invention is suitable for different to-be-detected display panels.

Description

technical field [0001] The present invention relates to the technical field of image analysis, and in particular, to a period extraction method, apparatus, computer equipment and readable storage medium. Background technique [0002] In the field of display panel inspection, the use of automatic optical (visual) inspection of surface defects (automatically optical inspection, AOI) based on optical image sensing to replace manual visual inspection of surface defects has gradually become an important means of surface defect inspection. [0003] In the automatic optical (visual) detection technology of surface defects, it is often necessary to extract the period with periodic characteristics in the image, and then intercept the image with no defect period as a template, and compare it with other images with periodic characteristics, so as to carry out Automatic localization of target defects. [0004] However, at present, many display panel manufacturers cannot directly calcul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06T7/0004G06T2207/30121
Inventor 不公告发明人
Owner CHENGDU UNION BIG DATA TECH CO LTD
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