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Proceedings Paper

Studies on data processing for laser speckle images of work-piece surface
Author(s): Chenbo Zhou; Jianxin Wang; Hongyu Xu; Wenying Yu
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Paper Abstract

The laser speckle patterns taken from grinded work-piece surface of a glass plane is processed to obtain the data results related to surface roughness using a visual user interface which has been developed with an experimental setup mainly consisting of He-Ne laser and CCD. The functions of processing the speckle images with the user interface are presented such as smooth the images by Gauss filter before other processions, and make the binary images by the threshold got with OSTU and present its histogram. We give the fitting curve of laser speckles' probability density distribution and their parameters, and Calculate their texture characteristic parameters such as angle-second moment, inertia (contrast), correlation and entropy value. The user interface of computer is developed using GUIDE from MATALB. We also present to compare the experimental results produced from laser speckle patterns at different detective angles and distance with the theory. The studies are useful to processing data for the measurement of surface roughness and profile of the work-piece using laser speckle method.

Paper Details

Date Published: 19 May 2006
PDF: 7 pages
Proc. SPIE 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 615020 (19 May 2006); doi: 10.1117/12.676416
Show Author Affiliations
Chenbo Zhou, Yantai Univ. (China)
Jianxin Wang, Yantai Univ. (China)
Hongyu Xu, Yantai Univ. (China)
Wenying Yu, Yantai Univ. (China)


Published in SPIE Proceedings Vol. 6150:
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Xun Hou; Jiahu Yuan; James C. Wyant; Hexin Wang; Sen Han, Editor(s)

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