Re: ICC user feedback request
Re: ICC user feedback request
- Subject: Re: ICC user feedback request
- From: email@hidden
- Date: Tue, 17 Apr 2001 13:45:29 EDT
In a message dated 4/17/01 12:24:47 PM, email@hidden writes:
>
It seems to me mathematically feasible to take an image file's color
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space (input profile) and contents (actually present RGB, CMYK or LAB
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values), and calculate a new ad hoc "profile" that shrink-wraps around
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the actual colors in the file. This could then be used if (and only if)
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perceptual rendering intent is asked for, to reduce the compression that
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would result from using the original input profile. This would ensure
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that the full gamut of a smaller output color space would always be
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available, whereas currently, colors that are outside the output gamut
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are likely to fall well inside the output gamut's borders.
Absolutely, if we wanted more "smarts" from CMMs, then this would be
possible... since it would read and write legal ICC profiles (but would also
use image data in the calculations it performs to determine results) it would
be a smart CMM, much as the Imation CMM (CFM) is not a standard CMM.
I would add to the list that it doesn't appear to be possible to query an ICC
profile to determine whether a given intent is real, or simulated by referral
from another intent. I'd also love to see a call to determine if any
nonliniar data exists in the curves before and after the CLUTs. If list
members would confirm that such calls do not exist, and no reasonable
workarounds for them are available, then I would suggest that they be
submitted for consideration.
C. David Tobie
Design Cooperative
email@hidden