Enhanced recovery of low spatial frequency spectral...

Details Enhanced recovery of low spatial frequency spectral... Enhanced recovery of low spatial frequency spectral...

2006-04-18

2009-08-25

Chen, Wenpeng (Department: 2624)

Image analysis

Image enhancement or restoration

C382S276000, C356S521000

Reexamination Certificate

active

07580586

ABSTRACT:
A method of restoring low spatial frequency spectral information to an image using a Fizeau Fourier transform spectrometer (“FFTS”) system is provided. Portions of a wavefront collected by the FFTS are interfered. The interference patterns are Fourier transformed to generate spectral images. A region of the image is identified, for which spectral information is predetermined. Object estimates are generated, each of which corresponds to a spectral image. Each object estimate is iteratively adjusted applying a system spectral optical transfer function (“SOTF”) to it and modifying it until a match is made with the corresponding spectral image. Each adjusted object estimate is then iteratively restored by applying a system optical transfer function (“OTF”) to it and then applying a DC bias to it until a match is made between the identified region in the sum of the object estimates and the identified region of a measured panchromatic object image.

REFERENCES:
patent: 7230717 (2007-06-01), Brock et al.
patent: 7408649 (2008-08-01), Freischlad et al.
patent: 7522292 (2009-04-01), Doerband
patent: 2005/0007603 (2005-01-01), Arieli et al.
patent: 2006/0239549 (2006-10-01), Kelly et al.

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