Photopolymer diffractive optical elements in electronic speckle pattern shearing interferometry
نویسندگان
چکیده
منابع مشابه
Combined denoising filter for fringe pattern in electronic speckle shearing pattern interferometry
We propose an effective image denoising filter, which combines an improved spin filter (ISF) and wave atoms thresholding (WA), to remove the noise of fringe patterns in electronic speckle shearing pattern interferometry (ESSPI). The WA is firstly employed to denoise the fringe to save the processing time, and then the ISF is further used to remove noise of the denoised image using WA to obtain ...
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Thermal sprayed coatings have wide engineering applications. There now exists a wide range of destructive and nondestructive testing (NDT) methods for surface coating inspections. This paper describes an application of Electronic Speckle Pattern Shearing Interferometry (ESPSI) for NDT of thermal sprayed surface coatings. In contrast to other conventional methods such as eddy current, ultrasonic...
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ژورنال
عنوان ژورنال: Optics and Lasers in Engineering
سال: 2006
ISSN: 0143-8166
DOI: 10.1016/j.optlaseng.2005.06.017