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3D curved glass contour scanning detection method and system

A technology of curved glass and scanning detection, which is applied in the direction of measuring devices, instruments, and optical devices, can solve problems such as insufficient precision and weak processing system robustness, and achieve cost savings, overcome camera depth-of-field problems, and clear processes Effect

Active Publication Date: 2022-07-19
WUHAN INSTITUTE OF TECHNOLOGY
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method that can automatically and accurately extract curved glass laser line images in the prior art for the defects that the accuracy obtained after processing the curved glass laser line image is not enough, and the robustness of the processing system is not strong. Line, dynamic acquisition of three-dimensional coordinates of curved glass and the processing system has a strong robustness of the 3D curved glass contour scanning detection system

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  • 3D curved glass contour scanning detection method and system
  • 3D curved glass contour scanning detection method and system
  • 3D curved glass contour scanning detection method and system

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Embodiment Construction

[0038] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0039] The invention uses the image technology to measure the contour of the curved glass, which greatly improves the measurement speed and accuracy, and the method is stable and efficient, reduces the consumption of manpower and material resources, and saves the cost. The entire 3D curved glass contour scanning detection system starts to collect the curved glass laser line image, dynamically obtains the height value of the curved glass, displays the point cloud of the curved glass in 3D, reads the model and compares it. The whole process is clear and intuitive.

[0040] The 3D curved glas...

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Abstract

The invention discloses a 3D curved glass contour scanning detection method based on line structured light dynamic vision, comprising the following steps: calculating the theoretical contour curve equation according to the size information of the designed curved glass drawing; When the line laser moves in the positive direction of the X-axis, it dynamically moves along the theoretical contour curve equation; the laser line extraction is performed on the collected curved glass laser line image, and the collected image data is converted into three-dimensional coordinate values. Display on the terminal, and display different colors according to the height value of the curved glass; read the actual model diagram of the curved glass; in the 3D point cloud window, select two points arbitrarily to get an actual 3D contour curve, and also intercept a curve in the model window The three-dimensional contour curve of the actual model of curved glass at the same position, in the same coordinate system, performs contour matching to obtain the contour.

Description

technical field [0001] The invention relates to the field of image processing and curved glass profile measurement, in particular to a 3D curved glass profile scanning detection method and system based on line structured light dynamic vision. Background technique [0002] In recent years, 3D curved glass has been widely used in industrial production, construction, mobile phone manufacturing, etc., and the manufacturing process has been relatively complete. The surface profile, glass thickness, and flatness of the curved glass itself are important precision indicators of the curved glass, which require key control during the production process. For the profile measurement of the produced glass, it is judged whether it is within the error range of the design profile. At present, there are still big problems in the measurement of curved glass, mainly due to the low measurement efficiency and poor accuracy. Therefore, improving the measurement efficiency and accuracy is an urge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/25G01B11/00G01B11/06
CPCG01B11/2518G01B11/002G01B11/0608
Inventor 洪汉玉严桂林章秀华赵卿松王朋陈攀李兴珣
Owner WUHAN INSTITUTE OF TECHNOLOGY
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