Analysis of Surface Roughness Using Laser Optical Imaging Techniques

Speckle phenomena were produced by using interference of scattered laser beams from certain rough object. Digital speckle images were recorded for different rougher and smoother surfaces, using an optical imaging system in two and three dimensions with a high resolution CCD camera. The obtained spec...

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Bibliographic Details
Published in:材料科学与工程：中英文B版 2012, Vol.2 (1), p.7-15
Main Author: Hatem EI-Ghandoor Mohamed Saudy Ahmed Ashour
Format: Article
Language:Chinese
Subjects:
CCD相机
光学成像系统
图像记录
成像技术
投影技术
散斑图像
激光光学
表面粗糙度值
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Summary:Speckle phenomena were produced by using interference of scattered laser beams from certain rough object. Digital speckle images were recorded for different rougher and smoother surfaces, using an optical imaging system in two and three dimensions with a high resolution CCD camera. The obtained speckle images were transformed to equivalent binary images. The values of surface roughness depend on the degree of agglomeration of the speckle images. The optical density was calculated and it was found that it depends on the different conditions for the optical imaging system. The back projection technique was used to reconstruct 3-dimensional surface roughness profiles from multi-directional projection data. Also, interference microscope was used for the reconstruction of surface topography for different rough surfaces.
ISSN:2161-6221