IT8 Scanning Standards
IT8 Scanning Standards
- Subject: IT8 Scanning Standards
- From: Roger Breton <email@hidden>
- Date: Wed, 31 Jan 2001 20:39:56 -0500
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The difficulty people are having with using the IT8 targets is not in scanning
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what they were designed for, but in scanning what they were not designed for.
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The gamuts possible with printed materials, cloth, paints, inks, etc. are
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different. Unfortunately, there are not any targets available for these media,
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with the exception of the new GretagMacbeth ColorChecker DC. This target is
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used for digital camera calibration and profiling. Due to its physical
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construction, it is not suitable for scanners since the colors do not lay flat
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to the scan surface and the target does not bend for attachment to a drum.
Robin,
the new GretagMacbeth ColorChecker DC can be considered "suitable" for
FLATBED scanners. Anyone bothered to try using it to profile their flatbed
scanners with it, treating them as digital cameras? I know, there is the
problem of that black point mapping which we all know bottoms out at L*=20,
at least on the old ColorChecker. But apart from that limitation, would'nt
that satisfy scanning materials not designed to be scanned using the IT8,
like clothing?
Roger Breton
QIGC