[argyllcms] Re: inverse logo2cgats
- From: Graeme Gill <graeme@xxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Fri, 03 Jul 2009 01:19:13 +1000
Claas Bickeböller wrote:
ISO 12642 defines how characterization data should be saved since years.
That doesn't seem right. I quote:
"ISO 12642-2:2006 defines a data set of ink value combinations that is intended to be used
to characterise four-colour process printing. This data set is not optimized for any
printing process or application area but is robust enough for all general applications.
The needs of publication, commercial, and package printing with offset, gravure,
flexography, and other printing processes have been considered. While it is primarily
aimed at process colour printing with CMYK inks, it can also be used with any combination
of three chromatic coloured inks and a dark ink. It is an alternate to the ISO 12642-1
data set where more robust data is required."
ie. it sounds like a set of test patch values, not a file format
specification.
There is even a new ISO standard that defines the format for colour data
as ASCII as well as in XML format.
That's ISO 28178.
That sounds more likely, although it's not clear if by ASCII they
mean that it's CGATS, and in any case it seems as loose as CGATS:
"ISO 28178:2009 is intended to be used in conjunction with other standards that will
define the required data, and tags or keywords for specific data exchange applications.".
The standard is expensive too, working against wide adoption.
Graeme Gill.
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