Information about the depth dimension can be stored in photographic recordings of ordinary scenes by introducing a camera movement and a shutter modulation during the exposure. Each object point is recorded as a one-sided zone-plate pattern where the focal length of the zone plate is related to the depth location of the point. This recording is equivalent to a hologram and the object can be reconstructed using coherent light and conventional holographic techniques. Experimental verification of the scheme is shown.
OLOF BRYNGDAHL, "Holographic Encoding with Completely Incoherent Light," J. Opt. Soc. Am. 60, 510-513 (1970)