Editing (including hue editing) of digital color images

Details Editing (including hue editing) of digital color images Editing (including hue editing) of digital color images

2006-03-16

2009-02-24

Haskins, Twyler L (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S518000, C358S520000, C345S428000, C345S581000

Reexamination Certificate

active

07495801

ABSTRACT:
Color is edited using a color representation including digital values B (brightness), C (chroma) and H (hue) such that B=√{square root over (D2+E2+F2)}, cos C=D/B and tan H=E/F, where DEF is a linear color coordinate system. The hue can be changed without changing the brightness and without changing the saturation if the H coordinate is changed without changing B and C. Also, the brightness can be changed without a color shift by changing the B coordinate and leaving unchanged the C and H coordinates. Other features are also provided.

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