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Proceedings Paper

Matricial representation of the transfer function for aliased systems
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Paper Abstract

Aliasing characterization is a critical problem in the description of pixelated image acquisition system such as focal plane array cameras for infrared image-forming systems. The aliased spatial frequency spectrum contains only those frequencies below the Nyquist limit. The higher- than- Nyquist frequency components are aliased onto lower- than-Nyquist frequencies. This effect can be described by means of a matricial transformation that is a folded version of the non-aliased transfer function of the system. This matricial analysis helps to understand the effect of the sampling. The transformation can be related with an aliased Modulation Transfer Function (MTF). Several examples of the application of the method are presented along with the description of the matricial formalism.

Paper Details

Date Published: 29 July 2002
PDF: 12 pages
Proc. SPIE 4719, Infrared and Passive Millimeter-wave Imaging Systems: Design, Analysis, Modeling, and Testing, (29 July 2002); doi: 10.1117/12.477478
Show Author Affiliations
Jose Manuel Lopez-Alonso, Univ. Complutense de Madrid (Spain)
Javier Alda, Univ. Complutense de Madrid (Spain)


Published in SPIE Proceedings Vol. 4719:
Infrared and Passive Millimeter-wave Imaging Systems: Design, Analysis, Modeling, and Testing
Roger Appleby; David A. Wikner; Roger Appleby; Gerald C. Holst; David A. Wikner, Editor(s)

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