From the irregular fringe patterns produced by the Fourier transform of a multiply exposed specklegram we may extract information about the kinematic parameters of a linear motion. The initial velocity, acceleration, and age (i.e., the time interval of the motion) for a uniform accelerated motion are computed from the results of a spatial frequency analysis.
© 1992 Optical Society of America
M. A. C. Irisarri, A. Garcia, R. Fernandez, and M. C. Vazquez, "Kinematic study by speckle photography," Opt. Lett. 17, 1-3 (1992)