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Gap measurement method and system based on machine vision

A technology of machine vision and measurement method, applied in measurement devices, instruments, optical devices, etc., can solve the problem of insufficient accuracy, and achieve the effects of high accuracy, improved product quality, and accurate judgment standards

Pending Publication Date: 2021-10-08
SUZHOU SECOTE PRECISION ELECTRONICS CO LTD
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  • Description
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  • Application Information

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Problems solved by technology

[0006] In view of this, the embodiment of the present invention provides a machine vision-based gap measurement method and system to solve the problem of insufficient precision in the existing technology for measuring the gap between the mobile phone screen and the main body

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  • Gap measurement method and system based on machine vision
  • Gap measurement method and system based on machine vision
  • Gap measurement method and system based on machine vision

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Embodiment Construction

[0039] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0040] The embodiment of the present invention provides a gap measurement method based on machine vision, such as figure 1 shown, including:

[0041] Step S10, irradiating the surface of the device to be inspected with a line laser of a specified wavelength to generate light stripes. Wherein, the light bar is composed of the reflected light on the surface o...

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Abstract

The invention discloses a gap measurement method and system based on machine vision, and the method comprises the steps: irradiating the surface of a to-be-detected equipment screen with line laser with a specified wavelength, and generating a light strip, wherein the light bar is composed of reflected light on the surface of the screen glass, diffuse reflection light on a to-be-detected equipment main body and a dark part generated by a gap between the screen glass and the to-be-detected equipment main body; acquiring an image containing a light bar through an industrial camera; and obtaining the width of the gap between the screen glass and the to-be-detected equipment main body through a sub-pixel algorithm according to the light and dark pixel information of the light bar in the image. A sub-pixel analysis technology is used during image acquisition and analysis, so that the size of the screen gap can be measured more accurately, and the product quality is improved. Compared with the interference and precision problems existing in manual measurement at the present stage, the computer vision processing method is adopted and has the characteristics of high speed, non-contact, high precision and the like, so that the production requirements of profit and precision and keeping pace with times are met.

Description

technical field [0001] The invention relates to the technical field of mobile phone manufacturing, in particular to a gap measurement method and system based on machine vision. Background technique [0002] Smartphones have entered a mature stage of development, and users have gradually increased their design requirements for mobile phones, which has led to higher and higher requirements for manufacturers on the assembly process of mobile phones. The size of the gap between the main body of the mobile phone and the screen is not only related to the overall feel of the mobile phone, but also related to the display performance and waterproof performance of the mobile phone screen, which is a key point in the installation process. Often manufacturers and users hope that the gap is as small as possible, so the detection of the gap between the main body of the mobile phone and the screen is an essential link in the production process of the mobile phone. [0003] The domestic de...

Claims

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Application Information

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IPC IPC(8): G01B11/14G01B11/02
CPCG01B11/14G01B11/02Y02P40/57
Inventor 孙丰张宝峰吴斌刘斌
Owner SUZHOU SECOTE PRECISION ELECTRONICS CO LTD
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