Abstract

Intensity binarization or clipping method is often used to carry out the fast calculation of a correlation function of speckle intensity. The shape of a clipped correlation function becomes sharp compared with a nonclipped one. It is expected that we can determine the peak position of a clipped cross-correlation function more accurately than that of a nonclipping one. The accuracy of the peak detection in speckle correlation is studied by using a computer simulation. The computer simulation for certain optical systems shows that the clipping technique is suitable for the accurate measurement of velocity and displacement based on the peak detection of speckle correlation.

© 1990 Optical Society of America

Correlation measurements using clipped laser speckle

Joseph Marron and G. Michael Morris
Appl. Opt. 25(5) 789-793 (1986)

Correlation properties of clipped laser speckle

Joseph Marron and G. Michael Morris
J. Opt. Soc. Am. A 2(9) 1403-1410 (1985)

Maximum dynamic range of clipped correlation of integrated laser speckle intensity

Akifumi Ogiwara and Junji Ohtsubo
J. Opt. Soc. Am. A 5(3) 403-405 (1988)

Clipped correlation functions of aperture integrated laser speckle

Richard Barakat
Appl. Opt. 25(21) 3885-3888 (1986)

Self-scaling of clipped photon correlations

Ronald J. Adrian
Appl. Opt. 20(22) 3901-3905 (1981)