  Holographic rendering of off-axis intensity digital holograms is discussed. A
review of some of the main numerical processing methods, based either on the
Fourier transform interpretation of the propagation integral or on its linear
system counterpart, is reported. Less common methods such as adjustable
magnification reconstruction schemes and Fresnelet decomposition are presented
and applied to the digital treatment of off-axis holograms. The influence of
experimental parameters on the classical hologram reconstruction methods is
assessed, offering guidelines for optimal image rendering regarding the
hologram recording conditions.
