Digital speckle correlation for curved surfaces
AbstractDisplacement of speckles arising in the diffraction field of a laser-illuminated surface subject to homogeneous deformation is investigated by numerical simulations using a rough surface model represented by an assembly of point scatterers distributed randomly around its mean surface that can be arbitrary. The results obtained from the simulation are compared with those derived from analytical approach that assumes a plane mean surface. These will be useful for designing and constructing displacement and deformation measurement systems using digital correlation technique.
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How to Cite
I. Yamaguchi, “Digital speckle correlation for curved surfaces”, Photonics Lett. Pol., vol. 4, no. 2, pp. pp. 54–56, Jun. 2012.