Method of normalizing color information, method of...

Details Method of normalizing color information, method of... Method of normalizing color information, method of...

2006-02-07

2006-02-07

Williams, Kimberly (Department: 2626)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S002100

Reexamination Certificate

active

06995865

ABSTRACT:
A method of exchanging color-information includes the steps of: (1) grouping color spaces of CIELAB of a source device and an output device; (2) calculating gravity vectors and gravity points of each color category grouped in respective devices; (3) producing a color space normalized by using gravity vectors calculated for each color category of respective devices and variance covariance matrix expressing an extension from the gravity point as a center; (4) mapping control points of corresponding color category provided in respective normalized color spaces; and (5) exchanging color information by finding an agreement between the color categories of the two normalized color spaces as well as preserving color-perceptive-quantity such as chroma of two corresponding colors in the respective normalized color spaces. This method achieves that overall impressions of images rendered on each device produce difference as little as possible.

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