REDUCTION OF REFERENCE HOLOGRAM NOISE AND FOURIER SPACE SMEARING IN DIRECT-TO-DIGITAL HOLOGRAPHY

摘要

Systems and methods are described for reduction of reference hologram noiseand reduction of Fourier space smearing, especially in the context of direct-to-digitalholography (off-axis interferometry). A method of reducing reference hologramnoise includes: recording a plurality of reference holograms; processing theplurality of reference holograms into a corresponding plurality of referenceimage waves; and transforming the corresponding plurality of reference imagewaves into a reduced noise reference image wave. A method of reducing smearingin Fourier space includes: recording a plurality of reference holograms; processingthe plurality of reference holograms into a corresponding plurality of referencecomplex image waves; transforming the corresponding plurality of referenceimage waves into a reduced noise reference complex image wave; recording a hologramof an object; processing the hologram of the object into an object complex imagewave; and dividing the complex image wave of the object by the reduced noise referencecomplex image wave to obtain a reduced smearing object complex image wave.