Image analysis – Image enhancement or restoration – Image filter
Reexamination Certificate
2005-02-15
2005-02-15
Patel, Kanjibhai (Department: 2625)
Image analysis
Image enhancement or restoration
Image filter
C345S597000, C358S447000
Reexamination Certificate
active
06856704
ABSTRACT:
A method is described for enhancing a color digital image by first identifying a local neighborhood of pixels including a pixel of interest and then using the color values of one or more of the pixels from the local neighborhood to calculate a color weighting factor for the pixel of interest, where the color weighting factor is a near continuous function of the location of the pixel of interest in a color space. A spatial filter is applied to the values of pixels from the local neighborhood to calculate a first signal value and a second signal value for the pixel of interest. The color weighting factor is then used to modify either the first value or the second value, and an enhanced pixel value is then generated for the pixel of interest from the first value and second values. The process is then repeated for other pixels in the color digital image.
REFERENCES:
patent: 4500919 (1985-02-01), Schreiber
patent: 4571635 (1986-02-01), Mahmoodi et al.
patent: 4689666 (1987-08-01), Hatanaka
patent: 4794531 (1988-12-01), Morishita et al.
patent: 4969043 (1990-11-01), Pothier
patent: 5038388 (1991-08-01), Song
patent: 5081692 (1992-01-01), Kwon et al.
patent: 5247366 (1993-09-01), Ginosar et al.
patent: 5327257 (1994-07-01), Hrytzak et al.
patent: 5349451 (1994-09-01), Dethardt
patent: 5641596 (1997-06-01), Gray et al.
patent: 5682443 (1997-10-01), Gouch et al.
patent: 5739922 (1998-04-01), Matama
patent: 5923775 (1999-07-01), Snyder et al.
patent: 6393148 (2002-05-01), Bhaskar
patent: 6408103 (2002-06-01), Gallagher et al.
patent: 6445831 (2002-09-01), Arai
patent: 6453075 (2002-09-01), Gallagher et al.
patent: 0 441 558 (1999-01-01), None
patent: 0971 314 (1999-06-01), None
“Digital Image Processing” by William Pratt, 2nd ed., John Wiley & Sons, 1991, pp. 278-284.
“Digital Image Enhancement and Noise Filtering by use of Local Statistics” by Jong-Sen Lee. IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. PAMI-2, No. 2, Mar. 1980.
U.S. Appl. No. 09/324,239, filed Jun. 2, 1999, Gallagher et al.
U.S. Appl. No. 09/457,036, filed Dec. 8, 1999, Gallagher.
Gallagher Andrew C.
Gindele Edward B.
Eastman Kodak Company
Patel Kanjibhai
Woods David M.
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