Patent ID: 7054504

Claim:
A method for reconstructing relative phase information in an iterative misfocused image correction process, said method comprising: (a) receiving misfocused image data from an image source, said image data comprising image amplitude information and lacking relative phase information; (b) generating a trial power value for a fractional Fourier transform correction operation according to an optimization algorithm; (c) determining a trial fractional Fourier transform correction operation based upon said trial power value; (d) determining trial phase restoration information based upon said trial power value; ( e) applying said trial phase restoration information and said trial fractional Fourier transform correction operation on said image data to correct a level of misfocus of said image data; and (f) determining if a desired level of correction of said misfocus of said image data has been achieved, wherein if said desired level has not been achieved, then a new value for said power value of said fractional Fourier transform correction operation is generated according to said optimization algorithm and said operations (c) through (f) are repeated.