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Proceedings Paper

Three-dimensional measurement method for thickness of LED tape coating based on linear array spectral confocal
Author(s): Hanyu Hong; Jiaowei Shi; Xiuhua Zhang; Qingsong Zhao
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Paper Abstract

Traditional measuring equipments and methods cannot satisfy the requirements of micrometer-level accuracy and realtime measurement of LED tape coating, the paper proposes a three-dimensional measurement method to compute the thickness of LED tape coating based on linear array spectral confocal. Firstly, the distance data is collected by linear array spectral confocal scanning and converted into 3D point cloud data, then the point cloud is materialized and smoothed to make the 3D object more realistic. Finally, the 3D entity is interacted in the Point Cloud Library to perform manual measurement of the tiny parts of the object. The subsequent automatic measurements are used to control the grating ruler for the specified position moving of measurement based on the previous manual measurement processes and the procedure file. The experimental results indicate that the accuracy of the proposed measurement method is less than 3um, and automatic measurement costs the processing time within 2.5s. In addition, the measurement accuracy is as high as 99.9%, which indicates that the proposed method performs a competitive result.

Paper Details

Date Published: 14 February 2020
PDF: 8 pages
Proc. SPIE 11432, MIPPR 2019: Remote Sensing Image Processing, Geographic Information Systems, and Other Applications, 114320Z (14 February 2020); doi: 10.1117/12.2538022
Show Author Affiliations
Hanyu Hong, Hubei Key Lab. of Optical Information and Pattern Recognition (China)
Hubei Engineering Research Ctr. of Video Image and High Definition Projection (China)
Wuhan Institute of Technology (China)
Jiaowei Shi, Hubei Key Lab. of Optical Information and Pattern Recognition (China)
Hubei Engineering Research Ctr. of Video Image and High Definition Projection (China)
Wuhan Institute of Technology (China)
Xiuhua Zhang, Hubei Key Lab. of Optical Information and Pattern Recognition (China)
Hubei Engineering Research Ctr. of Video Image and High Definition Projection (China)
Qingsong Zhao, Hubei Key Lab. of Optical Information and Pattern Recognition (China)
Hubei Engineering Research Ctr. of Video Image and High Definition Projection (China)


Published in SPIE Proceedings Vol. 11432:
MIPPR 2019: Remote Sensing Image Processing, Geographic Information Systems, and Other Applications
Zhiguo Cao; Jie Ma; Zhong Chen; Yu Shi, Editor(s)

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