Curved glass defect detection system and method

A curved glass and defect detection technology, which is applied in the direction of optical defect/defect test, measurement device, material analysis through optical means, etc., can solve the problem of complex structure and operation method of the detection device, low system integration, unfavorable promotion and application, etc. problem, to achieve the effect of improving image processing efficiency, increasing system data capacity, and improving detection accuracy

Pending Publication Date: 2019-12-13
湖南讯目科技有限公司
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Problems solved by technology

[0005] Generally speaking, people have made many attempts to detect the defects of curved glass cover plates, but in the existing technology, the detection device structure and operation method are relatively complicated, the system integration is not high, the performance is limited and the cost is high, which is not conducive to popularization application

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  • Curved glass defect detection system and method
  • Curved glass defect detection system and method
  • Curved glass defect detection system and method

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Embodiment Construction

[0060] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. And the features in the embodiments can be combined with each other.

[0061] In describing the present invention, it is to be understood that the terms "horizontal", "vertical", "left", "right", "top", "bottom", "inner", "outer", "upper", The orientation or positional relationship indicated by "below" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, Constructed and operated in a particular orientation and therefore should not be construed as limiting the scope of the invention.

[0062] figu...

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Abstract

The invention discloses a curved glass defect detection system and method. A linear array camera and an area-array camera which are arranged in a double-station distributed manner are utilized; a first program-controlled three-dimensional multi-light-field light source and a second program-controlled three-dimensional multi-light-field light source which are optimally designed are matched with thelinear array camera and the area-array camera, and therefore, the image acquisition of different parts (plane part, long arc edge, R angle and short arc edge) of curved glass under different illumination environments is realized; a linear array camera data preprocessing platform and an area-array camera data preprocessing platform based on an embedded system are used to carry out filtering, boundary detection, defect detection and other preprocessing on images; and preprocessed image data are transmitted to a data processing terminal through a program-controlled switch so as to be subjected to defect identification and classification. The curved glass defect detection system has the advantages of simple structure, stability, efficient detection, accurate defect recognition and easiness inmanagement.

Description

technical field [0001] The invention belongs to the technical field of machine vision, and in particular relates to a curved glass defect detection system and method, especially suitable for online detection of 2.5D / 3D / 3.5D curved cover glass defects. Background technique [0002] The cover glass is the protective layer of the touch screen, which is widely used in consumer electronics, automotive central control screen, industrial control, etc. In recent years, with the large-scale application of flexible OLED screens and the continuous optimization of ergonomics and appearance of various products, cover glass has experienced a development process from 2D to 2.5D to 3D to 3.5D. Compared with the traditional 2D flat cover glass, the curved cover glass has superior performance and has significant advantages in terms of fit, heat dissipation, gloss, and aesthetics. It is expected to be widely used in various 3C products in the future, such as smart phones , smart watches, tabl...

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Application Information

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IPC IPC(8): G01N21/896G01N21/88
CPCG01N21/896G01N21/8851G01N2021/8854G01N2021/8887
Inventor 张雄斌王罡
Owner 湖南讯目科技有限公司
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