HoloVision is a software package for performing digital holography on the Microsoft Windows platform. Basic theory for reconstruction of digitally sampled holograms is presented along with some more specific software implementation details. This includes the Fresnel method, the Convolution method and the Fourier method. A method involving a tilt of the reference wave and magnification through a numerical lens is presented to enlarge the visible region of the reconstructed image. Two different approaches for suppressing the undesired zero-order components are investigated. Examples are included for ordinary intensity images as well as for phase difference images from digital holographic interferometry.
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