this method has been tested by real speckle fringe pattern images, and the results show that this method is efficient and robust for espi even with high speckle noise.
实验表明,此方法可靠、实现简单,对高噪声的散斑干涉条纹图非常有效。
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.