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Fringe pattern denoising using coherence- enhancing diffusion

机译:使用相干增强扩散的条纹图案去噪

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Electronic speckle pattern interferometry is one of the methods measuring the displacement on object sur-nfaces in which fringe patterns need to be evaluated. Noise is one of the key problems affecting further pro-ncessing and reducing measurement quality. We propose an application of coherence-enhancing diffusion tonfringe-pattern denoising. It smoothes a fringe pattern along directions both parallel and perpendicular tonfringe orientation with suitable diffusion speeds to more effectively reduce noise and improve fringe-patternnquality. It is a generalized work of Tang et al.’s [Opt. Lett. 33, 2179 (2008)] model that only smoothes anfringe pattern along fringe orientation. Since our model diffuses a fringe pattern with an additional direc-ntion, it is able to denoise low-density fringes as well as improve denoising effectiveness for high-densitynfringes. Theoretical analysis as well as simulation and experimental verifications are addressed. © 2009nOptical Society of America
机译:电子散斑图案干涉法是测量在需要评估条纹图案的物体表面上的位移的方法之一。噪声是影响进一步处理和降低测量质量的关键问题之一。我们提出了一种相干增强扩散tonfringe模式去噪的应用。它以合适的扩散速度沿平行于条纹方向和垂直条纹方向的方向平滑条纹图案,以更有效地降低噪音并改善条纹图案质量。这是Tang等人的[Opt。来吧33,2179(2008)]模型仅沿边缘方向平滑边缘图案。由于我们的模型通过附加方向扩散条纹图案,因此它能够对低密度条纹进行去噪,并提高高密度条纹的去噪效果。理论分析,以及仿真和实验验证。 ©2009n美国光学学会

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