Editing (including contrast and sharpness editing) of...

Details Editing (including contrast and sharpness editing) of... Editing (including contrast and sharpness editing) of...

2006-03-16

2009-02-03

Haskins, Twyler L (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S518000, C358S520000, C345S428000, C345S581000

Reexamination Certificate

active

07486418

ABSTRACT:
In a digital image having pixels pi(i=1,2, . . . ) and a brightness B(pi) at each pixel pi, the contrast editing is performed by replacing the brightness B(pi) with B*(pi)=Bavg1−ε(pi)×Boε(pi), where ε is a positive constant other than 1, and Bavgis a weighted average of the B values in an image region R(pi) containing the pixel pi. The image can be a color image, with color represented using digital values B (brightness), e and f such that B=√{square root over (D2+E2+F2)}, e=E/B, f=F/B, where DEF is a linear color coordinate system. Alternatively, color can be represented using digital values B, C (chroma) and H (hue), where cos C=D/B and tan H=E/F. The contrast can be edited without a color shift (i.e. without changing the chromaticity coordinates) by changing the B coordinate and leaving unchanged the other coordinates e and f or C and H. Sharpness can be edited using the same techniques with a small region R(pi).

REFERENCES:
patent: 5285297 (1994-02-01), Rose et al.
patent: 5434683 (1995-07-01), Sekine et al.
patent: 5515172 (1996-05-01), Shiau
patent: 6262812 (2001-07-01), Chan et al.
patent: 6320668 (2001-11-01), Kim
patent: 6476793 (2002-11-01), Motoyama et al.
patent: 6724435 (2004-04-01), Segman
patent: 6867883 (2005-03-01), Cholewo et al.
patent: 7046400 (2006-05-01), Gindele et al.
patent: 7116443 (2006-10-01), Handley et al.
patent: 7167276 (2007-01-01), Wang et al.
patent: 2003/0206307 (2003-11-01), Handley et al.
patent: 2004/0075852 (2004-04-01), Wang et al.
patent: 2005/0128499 (2005-06-01), Glickman
International Search Report for International Application No. PCT/US06/62421, 3 pages.
Written Opinion for International Application No. PCT/US06/62421, 10 pages.
“HSV Color Space” Wikipedia, the free encyclopedia, http://en.wikipedia.org/wiki/HSB—color—space pp. 1-4.
“Color Conversion Algorithms” http://www.cs.rit.edu/˜ncs/color/t—convert.html pp. 1-5.
Pascale, Danny “A Comparison Of Four Multimedia RGB Spaces” pp. 1-13.
Sharma, Gaurav; Vrhel, Michael J.; Trussell, H. Joel “Color Imaging for Multimedia” Proceedings of the IEEE, vol. 86, No. 6, Jun. 1998, pp. 1088-1108.
Worthey, James A. “Color Matching with Amplitude Not Left Out” pp. 1-6.
Farrell, Joyce E.; Cupitt, John; Saunders, David; Wandell, Brian A. “Estimating Spectral Reflectances of Digital Artwork” pp. 1-7.
Lee, John C. “Understanding Color” pp. 1-9.
“Basic sRGB Math—A Standard Default Color Space for the Internet—sRGB” http://www.srgb.com/basicsofsrgb.htm pp. 1-3.
Poynton, Charles “Color FAQ—Frequently Asked Question Color” http://www.poynton.com
otes/colour—and—gamma/ColorFAQ.html pp. 1-25.
Hoffmann, Gernot “Color Order Systems RGB, HLS, HSB” pp. 1-10.
Class ColorUtil http://livedocs.macromedia.com/flex/15/asdocs—en/mx/utils/ColorUtil.html pp. 1-2.
MacAdam, “Orthogonal Color Matching Functions”, Journal of the Optical Society of America, 1954, vol. 44, pp. 713-724.
Cohen, Jozef “Two Preferred Reference Frames in Fundamental Color Space”Visual Color And Color Mixture: The Fundamental Color Space, Huguette Cohen, 2001, pp. 94-95, 100-103.

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