[Openicc] XICC specification draft

[Chris Murphy]

On Jun 27, 2005, at 2:04 AM, Ross Burton wrote:

> 1) a single main display and a number of "utility" displays, which are
> not used for the work (but hold toolbars, documentation, etc).  In  
> this
> case the work display is a superior display, the utility displays  
> might
> be smaller LCDs.
>
> 2) a number of identical monitors, and a desktop which truely spans  
> them
> all.  In this case as the monitors are identical, the same display
> profile should work.

1) display compensation is inherently valuable, even if the second  
display is small or of lesser quality than the primary display.

2) with CRTs at least, identical displays are far from certainty even  
if bought at the same time in the same location; but are definitely  
not identical as they age because what they display is different and  
therefore the phosphors are decaying differently. For LCD's the burn  
in factor is the backlight so perhaps they will be more stable so  
long as their luminance is set the same and they are both always used  
for the same about of time. However with different video cards almost  
surely being used for such situations. And even if the video cards  
were of the same make/model I can't say with confidence the combined  
analog circuitry from the OS, to the card, through the cable, to the  
display and within the display will result in sufficiently similar  
behavior. Maybe they will, maybe they won't.

CM in multiple monitor configurations becomes easier if there is  
something other than the application responsible for display  
compensation, and the windowing system is device independent.


Chris Murphy
Color Remedies (TM)
www.colorremedies.com/realworldcolor
---------------------------------------------------------
Co-author "Real World Color Management, 2nd Ed"
Published by PeachPit Press (ISBN 0-321-26722-2)