A high quality of whole field speckle fringe pattern can be obtained and the point-by-point filtering method can also be used to analyse the deformation more accurately.
应用该技术可获得优质的全场散斑条纹图，并可用逐点滤波法进行精确定量分析。
Traditional speckle fringe patterns by electronic speckle pattern interferometry (ESPI) are inherently noisy and of limited visibility, so denoising is the key problem in ESPI.
原始的电子散斑干涉条纹图中含有很强的颗粒性噪声，对比度很差，因此去除噪声是电子散斑干涉测量技术的关键问题。
In this paper, a simple method for estimating fringe orientation is presented, and a method of picking up the fringe skeletons of speckle pattern from fringe orientation is discussed.
本文提出了一种计算条纹方向的简单算法，以及通过条纹方向图提取散斑条纹中心线的方法。
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