Motion detection using speckle photography and extended fractional Fourier transform

B. Bhaduri; C. J. Tay; C. Quan

doi:10.1117/12.853632

14 May 2010 Motion detection using speckle photography and extended fractional Fourier transform

B. Bhaduri, C. J. Tay, C. Quan

Proceedings Volume 7718, Optical Micro- and Nanometrology III; 771813 (2010) https://doi.org/10.1117/12.853632
Event: SPIE Photonics Europe, 2010, Brussels, Belgium

Abstract

Speckle photography explores the possibility of determining the motion like in-plane translation and out-of-plane rotation or tilt of optically rough surface from the speckle shift that takes place at the recording plane. A simple correlation based speckle photographic system has been proposed that implements two simultaneous optical extended fractional Fourier transforms (EFRTs) of different orders using only a single lens and detector to simultaneously detect both the magnitude and direction of translation and tilt by capturing only two frames: one before and another after the object motion. Theoretical analysis and experiment results are presented.

Citation Download Citation

B. Bhaduri, C. J. Tay, and C. Quan "Motion detection using speckle photography and extended fractional Fourier transform", Proc. SPIE 7718, Optical Micro- and Nanometrology III, 771813 (14 May 2010); https://doi.org/10.1117/12.853632

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