Digital BW, The Print

OK I think there may be issues with how one creates or saves the text file
for input to QTR Create ICC.  I just took a Measuretool output file that
works with QTR Create ICC into Excel and then saved it as a tab delimited
text file again (no edits) and the saved version doesn't work with QTR
Create ICC.  Someone smarter than me can figure this out for those that need
to manually get an input file together.

You are doing 100 (+1) steps?  I guess QTR Create ICC can simply assume the
steps are evenly spaced...If so anyone using less than 100 would need to
make sure their steps are.  Personally I think this is a risk and if this is
one way Roy is making the data input file more flexible I would ask him to
reverse it. One might want to do say 60 steps and have more data points at
the dark end.  Having the input co-ordinate and not assuming it makes sense
to me.


> From: Carl Schofield <scho@...>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Tue, 18 Oct 2005 10:22:53 -0400
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Subject: Re: [Digital BW] ICC v. Transfer Function in Epson driver
> 
> Steve,
> 
> Yes, I tried it and it works well.  It assumes you have values from 0
> to 100 and just scales accordingly (after sorting).  There is a
> potential for error if your D values (or inversely L values) to not
> increase with increasing gray values, but that would be abnormal.
> 
> Carl
> 
> On Oct 18, 2005, at 9:34 AM, Steve Kale wrote:
> 
>> Actually Carl are you sure about this?  It should also need the
>> Gray value
>> else it does not know for what input the output was generated.