Automatic saturation adjustment

Details Automatic saturation adjustment Automatic saturation adjustment

2007-07-31

2007-07-31

Alavi, Amir (Department: 2624)

Image analysis

Color image processing

Color correction

C358S003230

Reexamination Certificate

active

11012653

ABSTRACT:
A method of correcting image saturation is performed by defining saturated colors in a chromaticity color space; and deriving an overall correction of the saturation of colors in the image using the defined saturation of these colors in conjunction with a table of corrections indexed by hue and lightness. This process has a unique attribute of being able to automatically decrease saturation in regions of an image where oversaturation is detected.

REFERENCES:
patent: 4812902 (1989-03-01), Fuchsberger
patent: 5390034 (1995-02-01), Murakami et al.
patent: 5450217 (1995-09-01), Eschbach et al.
patent: 5517335 (1996-05-01), Shu
patent: 5790282 (1998-08-01), Hayashi et al.
patent: 5982926 (1999-11-01), Kuo et al.
patent: 1 017 241 (2000-07-01), None
patent: WO 97/01151 (1997-01-01), None
Inoue, A., et al., “Adaptive Quality Improvement Method for Color Images,”NEC Res. Dev., vol. 35, 1994; 180-187.
Nayatani, Y., “Revision of the Chroma and Hue Scales of a Nonlinear color-Appearance Model,”Color Research and Applicationvol. 20(3), Jun. 1995; 143-155.
Hunt, R. W. G., “An Improved Predictor of Colourfulness in a Model of Colour Vision,”Color Research and Applicationvol. 19(1) Feb. 1994; 23-26.
Luo, M. R., “The LLAB Model for Colour Appearance and Colour Difference Evaluation,”SPIEvol. 2658, 1996; 261-269.
Fairchild, M. D., “Refinement of the RLAB Color Space,”Color Research and Application, vol. 21(5) Oct. 1996; 338-346.
Fairchild, M.D., et al., “The CIE 1997 Interim Colour Appearance Model (Simple Version), CIECAM97s”CIE TC1-34 Apr. 1998; 1-21.
Ebner, F., et al., “Development and Testing of a Color Space (IPT) with Improved Hue Uniformity,”The Sixth Color Imaging Conference: Color Science, Systems and Applications1998; 8-13.
Guth, S. L., “Further Applications of the ATD Model for Color Vision,” Proc.SPIEvol. 2414, 1995; 12-26.
Zhang, X., et al., “A Spatial Extensions of CIELAB for Digital Color-Image Reproduction,”Journal of SIDvol. 5(1) 1997; 61-63.
Berns, R. S., et al., “Determination of Constant Hue Loci for a CRT Gamut and Their Predictions Using Color Appearance Spaces,”Color Research and Applicationvol. 20(291) 1995; 163.
Hung, P. C., et al., “Determination of a Constant Hue Loci for a CRT Gamut and Their Predictions Using Color Appearance Spaces,”Color Research and Applicationvol. 20(5) Oct. 1995; 285-295.
Hamie, A. A., et al., “The British Building Colour Standards: Conversion to the Notations of Munsell, NCS, DIN, Coloroid, Colorcurve, and OSA-UCS,”Color Research and Applicationvol. 20(5) Oct. 1995; 328-340.
MacAdam, D. L., “Uniform Color Scales,”Journal of the Optical Society of Americavol. 64(12) Dec. 1974; 1691-1702.
The Swedish Natural Color System, “The NCS is as Simple as This!” http://www.ncscolour.com.
Richter, M., et al., “The Story of the DIN Color System,”Color Research and Applicationvol. 11(2) Summer 1986; 138-145.
Smith, A. R., “Color Gamut Transform Pairs,”Computer Graphicsvol. 12(3) Aug. 1978;12-19.
Nadenau, M. “Integration of Human Color Vision Models into High Quality Image Compression,” Thesis No. 2296 htpp://ltswww.epfl.ch/pub—files
adenau//Départment D'Electriciteé, Ecole Polytechnque Fédérale de Lusanne, Switzerland 2000.

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