In this paper we present some computer simulation results on the influence of the diffraction halo in the 2-D analysis of speckle photography fringes. The performance of an average processing method was evaluated by calculating the fringe shifts caused by the varying irradiance of the halo. These shifts were calculated from fringe maxima and minima and via discrete Fourier transform. Results depend on fringe density and visibility. The performance of both methods is compared for the noise-free case.
© 1985 Optical Society of America
S. A. Isacson and Guillermo H. Kaufmann, "Two-dimensional digital processing of speckle photography fringes. 1: Diffraction halo influence for the noise-free case," Appl. Opt. 24, 189-193 (1985)