Color editing (including brightness editing) using color...

Details Color editing (including brightness editing) using color... Color editing (including brightness editing) using color...

2005-12-28

2009-02-10

Haskins, Twyler L (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S518000, C358S520000, C345S428000, C345S581000

Reexamination Certificate

active

07489420

ABSTRACT:
Color is edited using a color representation including 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 is represented using digital values B, C (chroma) and H (hue), where cos C=D/B and tan H=E/F. Brightness can be changed without a color shift by changing the B coordinate and leaving unchanged the other coordinates e and f or C and H. Other features are also provided.

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