3D curved glass contour scanning detection method and system based on line structured light dynamic vision

A technology of curved glass and line structured light, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve problems such as insufficient precision and weak processing system robustness, achieve cost saving, overcome the problem of camera depth of field, and improve measurement speed effect
CN112629441AActive Publication Date: 2021-04-09WUHAN INSTITUTE OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
WUHAN INSTITUTE OF TECHNOLOGY
Publication Date
2021-04-09

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Abstract

The invention discloses a 3D curved glass contour scanning detection method based on line structured light dynamic vision. The method comprises the following steps of: calculating to obtain a theoretical contour curve equation according to the size information of a designed curved glass drawing; controlling a Z axis to control a camera and a line laser to move along the positive direction of an X axis and dynamically move along the theoretical contour curve equation at the same time; performing laser ray extraction on an acquired curved glass laser ray image, converting the acquired image data into three-dimensional coordinate values, displaying the three-dimensional coordinate values on a terminal in a three-dimensional point cloud dynamic graph, and displaying different colors according to the height value of curved glass; reading an actual model diagram of the curved glass; and randomly selecting two points in a three-dimensional point cloud window to obtain an actual three-dimensional contour curve, cutting out a three-dimensional contour curve of the actual model of the curved glass at the same position as the actual three-dimensional contour curve in a model window, and carrying out contour matching in the same coordinate system to obtain a contour degree.
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Description

technical field

[0001] The invention relates to the fields of image processing and curved glass profile measurement, in particular to a scanning detection method and system for 3D curved glass profile based on line structured light dynamic vision. Background technique

[0002] In recent years, the production and application range of 3D curved glass in industrial production, construction industry, mobile phone manufacturing industry, etc. has become more and more extensive, and the manufacturing process has been relatively perfect. The curved surface profile, glass thickness, and flatness of curved glass itself are important precision indicators of curved glass, which require key control during the production process. For the measurement of the profile of the produced glass, it is judged whether the profile of the design is within the error range. At present, there are still big problems in the measurement of curved glass, mainly because of the low efficiency and poor accurac...

Claims

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