A simple, yet powerful, means of computing the phase of fringe patterns depicting dynamic phenomena is presented. It is shown that the basic principle of the phase-shifting methods can be extended to the case of dynamic situations. The crux is to recognize that the phenomenon under examination can itself provide the necessary incremental phase shifts. This new method possesses a very wide range of applications in the field of deformation measurement.
© 1996 Optical Society of America
Xavier Colonna de Lega and Pierre Jacquot, "Deformation measurement with object-induced dynamic phase shifting," Appl. Opt. 35, 5115-5121 (1996)