[argyllcms] Re: dispcal: Warning - RegOpenKeyEx failed with 2

  • From: lee scratchy <leescratchy@xxxxxxxxxxx>
  • To: <argyllcms@xxxxxxxxxxxxx>
  • Date: Thu, 3 Jan 2008 13:44:19 +0000

Hi there and HNY!

I have 2 additional questions if you don't mind Graeme :

1)I've seen that ARGYLL supports the HCFR colorimeter, but it doesn't seem to 
take reference files(.thc) in account.....so how can I find out the right R/G/B 
mix ?
AFAIK this unit is worthless without .thc files, which basically enables to 
find the proper white temperature

2)I'm expecting to receive a Eye One Display LT unit.
in the Gretag SDK and in the HCFR software, they ask you to put the unit in a 
bag in order to "calibrate" the unit for LCD, and on a white background for CRT.

I've been told that the Eye One were giving more precise measurements thanks to 
this unit calibration required prior to each session.

is it required with ARGYLL ?

Thanks again,

> Date: Fri, 28 Dec 2007 00:15:37 +1100
> From: graeme@xxxxxxxxxxxxx
> To: argyllcms@xxxxxxxxxxxxx
> Subject: [argyllcms] Re: dispcal: Warning - RegOpenKeyEx failed with 2
> lee scratchy wrote:
> > ok well, here's the best I could get :
> > 
> > Adjust R,G & B gain to get target x,y. Press space when done.
> >    Target B 36.52, x 0.3128, y 0.3291
> > / Current B 36.76, x 0.3125, y 0.3364  DE  5.5  R+  G-  B++
> > 
> > I've adjusted the blue contrast of my DLP projector to get the "B" this 
> > close to the target.
> The "B" in front of "36.76" stands for "Brightness". (I'll change it to "Br" 
> to reduce confusion).
> > could you also please add a fullscreen mode for videoprojectors so the 
> > calibration window borders
>  > don't interfere in the process ?
> It crossed my mind, and I will look into it, but I think you've got problems 
> if your
> instrument is set so that there is any chance of it being affected by the 
> window border,
> since it may then be being affected by the edge of the screen.
> > and about my LUT problem, I guess it's hopeless considering both displays 
> > become display
>  > #1 when they are the only one enabled ?
> It sounds complicated. My only thought is that you need some way of detecting 
> which configuration
> you have, and switching the target display accordingly. Perhaps a shell script
> of some sort could be arranged to do this ?
> If you have a dynamic situation (ie. the Operating System or graphics card
> drivers switch as you plug in or remove a display), then a more sophisticated
> ICC profile/Video LUT management application is needed. Microsoft had an
> ICC management application you could download for XP (a Vista Preview).
> Perhaps it handles dynamic display changes ? (sorry, I haven't played with 
> it).
> Graeme Gill.

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