QTR-Quadtone RIP

Andy

You can use MS Excel to convert hex string values to decimal numbers. Use
the function HEX2DEC. For example I converted the values below and got:

HEX: 00095B	00077A	00301A
Dec: 2395	1914	12314

Obviously you'll have to convert a few known patches (such as the Wolf
target) before you can figure out the units and scaling. If you end up using
excel, xrite has a free utility called xkey that will import keystrokes from
a serial port directly into an application such as Excel.

Whatever the units are, I imagine you'd find tools and formula at Bruce
Lindbloom's site:

http://www.brucelindbloom.com/index.html

Keep digging.

Tom Moore

> -----Original Message-----
> From: QuadtoneRIP@yahoogroups.com [mailto:QuadtoneRIP@yahoogroups.com] On
> Behalf Of andywebsterus
> Sent: Monday, January 22, 2007 3:34 PM
> To: QuadtoneRIP@yahoogroups.com
> Subject: [QuadtoneRIP] Re: EFI ED-100 - again
> 
> OK I know I'm answering my own posts!
> 
> > Toolcrib will auto-paste these values into Excel....  (looked like I was
> > getting somewhere) like this:
> >
> > MGI RD-200 000255
> 
> The useful part of this string are the values:
> 
> 00095B          00077A              00301A
> 
> They are R-G-B as HEX values.
> 
> I can get all the measurements neatly and automatically into Excel,
> (each click on the densi pastes another reading into the sheet) then
> converted to decimal.  The lower the number the more reflective the
> surface.
> 
> 
> How do I convert these  decimal RGB values into something that QTR
> will enjoy?
> 
> RGB to L ?  How to do that?
> 
>  I Have an IT8 target (Wolf Faust) which I might be able to use to check
> calibration...
> 
> Andy
> 
> 
> 
> 
> 
> 
> Yahoo! Groups Links
> 
> 
>