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29 July 2002 Matricial representation of the transfer function for aliased systems
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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.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jose Manuel Lopez-Alonso and Javier Alda "Matricial representation of the transfer function for aliased systems", Proc. SPIE 4719, Infrared and Passive Millimeter-wave Imaging Systems: Design, Analysis, Modeling, and Testing, (29 July 2002); https://doi.org/10.1117/12.477478
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