Digital holography (DH) differs from traditional holography in that a dynamic digital sensor is used in place of photographic plate to record the interference pattern due to an incident object and reference wave-field. By recording the interference pattern of an object and reference wave the complex amplitude of the object field may be recovered [1-6]. There are many advantages to a digital approach such as ease of use, flexibility in image processing, storing and transmission of the data electronically. However the limited number of pixels on a modern CCD camera (as well as the relatively large spacing between adjacent pixels in contrast to a comparable recording on typical photographic film) imposes a severe limitation on the spatial resolution of the captured digital holograms. High spatial resolution in digital holograms is important for accurately recording and replaying 3D scenes [7,8].