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Character defect detection method and device

A defect detection and character technology, applied in the image field, can solve the problems of high labor cost and low efficiency of detection, and achieve the effect of saving labor cost

Active Publication Date: 2020-04-24
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most character defect detection is still done manually, with low efficiency and high labor cost.

Method used

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  • Character defect detection method and device
  • Character defect detection method and device

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Embodiment Construction

[0029] Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present application can be more thoroughly understood, and the scope of the present application can be fully conveyed to those skilled in the art.

[0030] figure 1 A schematic flow chart showing a character defect detection method according to an embodiment of the present application, see figure 1 , the character defect detection method of the present embodiment comprises the following steps:

[0031] Step S101, acquire the image to be inspected containing the character and the template character image corresponding to the character, convert the image to be...

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Abstract

The invention discloses a character defect detection method and device. The character defect detection method comprises the steps: obtaining a to-be-detected image containing a character and a template character image corresponding to the character, and converting the to-be-detected image into an image consistent with the template character image in format; extracting a first effective area containing characters in the to-be-detected image and extracting a second effective area containing template characters in the template character image; obtaining a first image based on the first effectivearea, and obtaining a second image based on the second effective area; calculating a transformed image indicating the information difference between the first image and the second image according to the first image and the second image; and obtaining a character defect detection result of the to-be-detected image according to the information of the transformed image. According to the technical scheme, the detection precision can reach the precision of manual detection, the automatic effect is achieved and the labor cost is saved.

Description

Technical field [0001] The present application relates to the field of image technology, and specifically to a character defect detection method and device. Background technique [0002] Printing or laser engraving characters on products such as some product information (origin, product name, corporate trademark, etc.) is a manifestation of customized product appearance. Since the print heads of current printing equipment or laser engraving equipment generally have certain errors when printing characters, such as the thickness of character strokes are not completely consistent, the detection of these characters has become an important link in the product production process. Currently, most character defect detection is still done manually, which is inefficient and requires high labor costs. Contents of the invention [0003] In view of the above problems, the present application is proposed to provide a character defect detection method and device that overcome the above ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/95G01N21/956G01N21/01
CPCG01N21/95G01N21/956G01N21/01G01N2021/0112G06V30/133G06T7/001G06T2207/30144G06T2207/10024G06T2207/20056G06T7/90G06V30/1444G06T11/001G06T2207/30176G06T3/02
Inventor 李士钰张一凡田继锋
Owner GOERTEK INC