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Proceedings Paper

Tomographic directional derivative of phase objects slices using 1-D derivative spatial filtering of fractional order ½
Author(s): G. Rodríguez-Zurita; C. Meneses-Fabián; J.-S. Pérez-Huerta; J.-F. Vázquez-Castillo
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Paper Abstract

Optical tomography of phase objects could be carried out with optical derivatives at the phase detecting stage. A particularly convenient related technique is the use of a fractional derivative of fractional order 1/2, which consists of a spatial filter with square-root amplitude transmittance. An advantage of this type of filter is that it can be implemented as a real filter when dealing with phase objects. Irradiance is proportional to the phase derivative of order one, and it can be obtained. If a tomographic detection system is equiped with such a filter, phase gradient of projections can be determined, and directional derivatives of phase slices can be displayed. Slice images resulting from an experimental tomographic system for parallel projections includes a spatial filter. with square-root amplitude transmittance made from a liquid crystal display operating in amplitude modulation are shown.

Paper Details

Date Published: 20 January 2006
PDF: 7 pages
Proc. SPIE 6027, ICO20: Optical Information Processing, 60271K (20 January 2006); doi: 10.1117/12.668139
Show Author Affiliations
G. Rodríguez-Zurita, Benemérita Univ. Autónoma de Puebla (Mexico)
C. Meneses-Fabián, Benemérita Univ. Autónoma de Puebla (Mexico)
J.-S. Pérez-Huerta, Benemérita Univ. Autónoma de Puebla (Mexico)
J.-F. Vázquez-Castillo, Benemérita Univ. Autónoma de Puebla (Mexico)

Published in SPIE Proceedings Vol. 6027:
ICO20: Optical Information Processing
Yunlong Sheng; Songlin Zhuang; Yimo Zhang, Editor(s)

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