Image coding with far-field holograms.
Two image-coding capabilities associated with far-field holograms are analytically and experimentally evaluated. It is demonstrated that preprocessed information concerning the shape of a small object can be efficiently coded into the fringe structure associated with a far-field hologram. In addition, the resultant record has a smaller bandwidth than the original object, and this reduces the resolution requirements when the hologram is used as the input to an information processing system.