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2004

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/24264

Reduction of the effect of aberrations in a joint transform correlator

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Recurs relacionat

http://dx.doi.org/10.1364/AO.43.000841

Resum

We report the study of the influence of optical aberrations in a joint-transform correlator: The wave aberration of the optical system is computed from data obtained by ray tracing. Three situations are explored: We consider the aberration only in the first diffraction stage (generation of power spectrum), then only in the second (transformation of the power spectrum into correlation), and finally in both stages simultaneously. The results show that the quality of the correlation is determined mostly by the aberrations of the first diffraction stage and that we can optimize the setup by moving the cameras along the optical axis to a suitable position. The good agreement between the predicted data and the experimental results shows that the method explains well the behavior of optical diffraction systems when aberrations are taken into account.

Matèries

Reconeixement òptic de formes

Matèries (anglès)

Optical pattern recognition

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Articles publicats en revistes (Física Aplicada)

Citació

PÉREZ TUDELA, Julio D., et al. Reduction of the effect of aberrations in a joint transform correlator. Applied Optics. 2004. Vol. 33, num. 4, pags. 841-849. ISSN 0003-6935. [consulted: 19 of August of 2026]. Available at: https://hdl.handle.net/2445/24264

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