Wavelet description of dynamic speckle: application to the assessment of the drying of paint
Margarita Fernández Limia, A Mavilio Nunez, Hector Jorge Rabal, Marcelo Trivi · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2001
A methodology to dynamic speckle analysis by using the wavelet transform (WT) is developed. The optimal texture descriptors are determined. The time evolution of the speckle pattern is described through the behavior of the Mahalanobis distance. From the behavior of this distance function, two parameters are defined that characterize the evolution. An example devoted to the drying of paint assessment is presented.