Re: How test quality of ICC profiles?
Re: How test quality of ICC profiles?
- Subject: Re: How test quality of ICC profiles?
- From: email@hidden
- Date: Thu, 22 Mar 2001 08:07:04 EST
In a message dated 3/22/01 6:43:04 AM, email@hidden writes:
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How can one test the quality of ICC profiles? I have been looking at the
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profiles of laser and inkjet printers and find the vendor-supplied profiles
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vary in size from 37KB to 2MB, from 8 nodes per side of the CLUT to 33
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nodes per side. Some use 8-bit values, some 16.
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Are there tests or evaluations that allow one to determine the quality
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of
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these profiles other than just eyeballing the results? Are there guidelines
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on which of these variables are most important to color management?
As canned profiles, its would be typical to simply assume they are all
garbage... but of course the ones for lasers and color copiers would be even
more useless, as they are variable devices over time... some of the inkjet
canned profiles can be pretty reasonable. To make a long technical story
short, yes, there are standards to test accuracy, and units to evaluate the
results in, and it all works through a rendering intent different from the
one users print their photos through, making it rather a technicality. But it
is reassuring to those of us who work on the stuff... <G>
C. David Tobie
Design Cooperative
email@hidden