Two objective speckle patterns are obtained—one before and one after the object has been moved—and are placed in the input plane of an optoelectronic nonlinear joint transform correlator.
© 1998 Optical Society of America
J. Guerrero-Bermúdez, C. Torres, O. Gualdron, Y. Torres, and L. Salazar, "Micro-displacement by Means of Optoelectronic Nonlinear Joint Transform Correlation of Speckle Pattern," Appl. Opt. 37, 8153-8154 (1998)