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ICC compatibility test
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ICC compatibility test


  • Subject: ICC compatibility test
  • From: Henrik Holmegaard <email@hidden>
  • Date: Wed, 20 Dec 2000 08:19:11 +0100

Jan-Peter Homann wrote

to work on a open-source test-set for icc-compatibility ... So my first test
for new applications is, if a color-transformation is identical with an P2P
in Photoshop.

I think you mean the ColorSync filters that rely on the default CMM. Any Mac with ColorSync installed will by definition also have the default CMM available. The definition of device independence is a transform in default mode.

A test that revolves around ColorSync is one thing, a test that revolves around an application is something else again. Photoshop 5 uses other code paths and an internal color management method which is proprietary to Adobe. The technical status for Photoshop 6 is not clear.

Excluded from a test of ICC compatibility is also ICM1 by Kodak where the CMM only supported 8 points while ColorSync supported 32.

The CMM / API / application / driver / RIP matrix is very, very complex. However, the idea of such a test is intriguing.


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