A method for holographic storage data recovery in a holographic storage
system is presented. One exemplary method includes detecting a stored
image at a detector such that the image is oversampled. A relationship is
determined between a location of the detected image and a location of the
source image. Pixel information associated with the source image may be
obtained from the detected image based on a fractional delay filter. In
one example, the image may be oversampled by magnifying the detected
image at the detector and/or having a detector with pixel sizes and
spacing less than the image pixel size. Further, coefficients of the
fractional delay filter may be determined, at least in part, on
magnification and shift information of the image based on known
registration marks.