Defect detection method, device, optical imaging system, equipment and storage medium
A defect detection and defect technology, applied in measuring devices, material analysis by optical means, image analysis, etc., can solve problems such as inability to effectively detect black spot defects on glass cover plates, immature equipment, etc., to reduce labor inspection costs. Effect
Active Publication Date: 2022-04-08
LENS TECH
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Problems solved by technology
[0006] The invention provides a defect detection method, device, optical imaging system, equipment and storage medium, which solves the problem that the AOI equipment in the glass cover detection industry of electronic products in the prior art is not mature enough to effectively detect black spots on the glass cover defective technical issues
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[0078] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.
[0079] In addition, the terms "including" and "having" mentioned in the description of the present application, as well as any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes other unlisted steps or units, or optionally also includes Other steps or elements inherent to the process, method, product or apparatus are included.
[0080] It should be noted that, in the embodiments of the present invention, words such as "exemplary" or "for example" are used for example, illustration or illustration. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of...
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Abstract
The invention discloses a defect detection method, device, optical imaging system, equipment and storage medium, relates to the technical field of glass cover plate defect detection, and solves the problem that the AOI equipment in the glass cover plate detection industry of electronic products is not mature enough in the prior art. The technical problem of being unable to effectively detect the black spot defect of the glass cover plate. The method includes: acquiring a reflected light image of the glass cover plate irradiated by an infrared light source on the glass cover plate to be detected; performing background homogenization and defect enhancement processing on the reflected light image, so as to increase the contrast between the background and the defect in the reflected light image Difference value; extract the defect area in the image after the background homogenization and defect enhancement processing; judge whether the defect in the defect area is a black spot defect according to the image characteristics of the defect area.
Description
technical field [0001] The invention relates to the technical field of defect detection of glass cover plates, in particular to a defect detection method, device, optical imaging system, equipment and storage medium for detecting black spot defects of glass cover plates of electronic products such as mobile phones. Background technique [0002] At present, the manufacturing process of glass covers for mobile phones and other electronic products includes cutting, fine carving, CNC (Computer Numerical Control, CNC machine tool) processing, flat grinding, silk screen printing and other processes, and each process will produce various appearance defects. Therefore, inspectors will be arranged for manual inspection in the corresponding process. The most direct inspection process is flat inspection, blank sheet, finished product and packaging. These four major inspection procedures have invested a lot of human resources, and manual inspection is affected by output and emotion, and...
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IPC IPC(8): G01N21/958G06T7/00
CPCG01N21/958G06T7/0002
Inventor 李谭军
Owner LENS TECH