Re: Hexachrome Profiling
Re: Hexachrome Profiling
- Subject: Re: Hexachrome Profiling
- From: email@hidden
- Date: Mon, 6 Nov 2000 22:19:13 EST
In a message dated 11/3/00 12:31:51 PM, email@hidden writes:
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Does anyone know of a piece of software
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that would allow one to enter Lab values and process them through a
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Hexachrome profile, with the output being HexaChrome process values (i.e.
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74%C, 45%M, 30%Y, 15%K, 12%O, 10%G)? The application in mind is reading
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in
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paint swatches with a spectro and trying to determine the closest HexaChrome
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values. Ideally, the software would also give some type of objective data
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concerning whether the color was inside the HexaChrome gamut of the profiled
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device, and if not tell how far outside of gamut it fell. Currently this
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can
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be done with Color Shop (perhaps others as well) from X-Rite for straight
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4/c process, but to my knowledge there is no way to do this with HexaChrome.
This sounds like a feature request for ColorThink v2... but keep in mind that
there are numerous formuli for the same color from hexachrome, and that some
system of determining the priorities (rather like the rules in black gene
ration provided by UCR, UCA, and GCR) are needed to make the numbers
meaningful or consistant. For instance one could prioritize using the
greatest possible component of each color based on how close it was to the
color being developed, which would minimize metamerism, or choose the ink
combination with the lowest total ink, to minimize soaking and bleeding.
C. David Tobie
Design Cooperative
email@hidden