Michael Scott Keyes

US Patent:

61189065, Sep 12, 2000

Filed:

Feb 3, 1998

Appl. No.:

9/018098

Inventors:

Michael P. Keyes - Fairport NY
Karen A. Hoff - Fairport NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G06K 940

US Classification:

382266

Abstract:

A method of processing a digital image comprising the steps of: providing a pixellated digital image having noise components; measuring the noise components in the digital image with a noise estimation system to generate noise estimates; and sharpening the digital image with an image sharpening system which uses the noise estimates.

US Patent:

58450173, Dec 1, 1998

Filed:

Dec 17, 1996

Appl. No.:

8/767902

Inventors:

Michael P. Keyes - Fairport NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G06K 940
G06T 500
H04N 1409

US Classification:

382261

Abstract:

A method of digital image processing for degraining (smoothing) of images based on selected averaging of pixels in a neighborhood of pixels surrounding a target pixel to be recalculated. Improvement in the application of the selected average method to images of higher graininess such as might be obtained from higher speed films is achieved by weighting the difference in code values between each neighborhood pixel and the target pixel in accordance with a function that is related to physical distance between the neighborhood pixel and the target pixel. After all target pixels are recalculated using a selected fraction of pixel elements based on their distance weighted difference values, the process is iterated for each target pixel "n" number of times to achieve a desired relative code value of the target pixel to surrounding background pixel code values whereupon a final unweighted averaging operation is performed to achieve the final recalculated value of the target pixel.

US Patent:

56746652, Oct 7, 1997

Filed:

Nov 17, 1995

Appl. No.:

8/560134

Inventors:

John Frank Sawyer - Fairport NY
Michael Paul Keyes - Fairport NY
John Charles Brewer - Rochester NY
John Tyler Keech - Penfield NY
Elizabeth Laura Kelly - Webster NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 722
G03C 7407

US Classification:

430383

Abstract:

A color negative photographic film wherein on the curve of density versus log E for each color sensitive record: (1) a straight line, which connects the point at density Dmin+0. 1 and the point at 1. 5log E above the exposure required for density Dmin+0. 2, has a mathematical slope. ltoreq. 0. 50; and (2) the difference in log E is. gtoreq. 1. 7 between the point 0. 9log E above the exposure required for density Dmin+0. 2 and the point where the density difference is 0. 1 between the curve and the straight line which results from a linear regression of the three density points at exposures 0. 3log E, 0. 9log E, and 1. 5log E above the exposure required for the density Dmin+0. 2; and (3) the difference in log E is. gtoreq. 1. 20 between the exposure needed for density Dmin+0. 1 and the point that corresponds to the exposure, in lux-seconds, of 9.

US Patent:

60918616, Jul 18, 2000

Filed:

Feb 3, 1998

Appl. No.:

9/017634

Inventors:

Michael P. Keyes - Fairport NY
Karen A. Hoff - Fairport NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G06K 940

US Classification:

382299

Abstract:

A method for processing a digital image comprising the steps of: providing a digital image from an original image on exposed photographic media; determining the exposure of the original image; and based on the exposure, sharpening the digital image using an image sharpening system. A method of processing a digital image comprising the steps of: providing a digital image from an original image on exposed photographic media; determining the type of the photographic media and magnification to produce the final image; and based on the type of the photographic media, sharpening the digital image using an image sharpening system. A method of processing a digital image comprising the steps of: providing a digital image from an original image on exposed photographic media and magnification to produce the final image; determining the type of the photographic media; determining the exposure of the original image; deriving the print grain index from the media type, magnification, and exposure of the original image; determining the sharpening level of the digital image based on the print grain index; and sharpening the digital image using an image sharpening system.