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

  • From: lee scratchy <leescratchy@xxxxxxxxxxx>
  • To: <argyllcms@xxxxxxxxxxxxx>
  • Date: Wed, 26 Dec 2007 10:59:00 +0000

ok thanks Graeme  I'll try, but I think that will be the same problem all over 

as long as the 2 devices are running at the same time, that will work.

but whenever I will disable one, windows will apply its own defaut LUT no 
matter....but I'll give it a shot!

well yeah I got it right then, but if it says to lower "y" I lower the green 
contrast but then "y" increases ?!

I don't think I can achieve what I want with the "-p" argument.

basically I use it on my videoprojector, so I want it as big as possible, but 
still being able to read the ARGYLL precalibration infos(the 2 last lines of 
the command-line window).

atm, I have to make one precalibration pass then struggle to move the window.

if you could offer the option to move it by hand before the calibration, that 
sure would be VERY handy on videoprojectors.

the window remains always on top anyway, so there isn't much to worry about.

here's what I want to do :

Best Regards,


> Date: Wed, 26 Dec 2007 12:26:22 +1100
> From: graeme@xxxxxxxxxxxxx
> To: argyllcms@xxxxxxxxxxxxx
> Subject: [argyllcms] Re: dispcal: Warning - RegOpenKeyEx failed with 2
> lee scratchy wrote:
> > I never use both at the same time, and I would like to somehow force the 
> > LUT in my dualhead 
>  > ATI HD2600 PCI-E videocard......so the CRT lut would be forced on the 
> primary VGA output and
>  > the DLP lut would be forced on the secondary DVI output.......I guess this 
> is quite impossible ?
>  > ok thanks for the reply, but I run XP SP2 so when you talk about X11 I'm 
> kinda lost :)
> If the two outputs are visible to the operating system, then you should
> see them listed with "dispwin -?", and you can simply chose the
> display you want to install the calibration curve to with the -d parameter.
> >    Target B 0.44, x 0.3128, y 0.3291
> > \ Current B 0.43, x 0.4055, y 0.3743  DE 22.7  R-- G-  B+
> > 
> > so it says to remove a lot of red, a bit of green and add some blue, right ?
> Yes, with red being the dominant adjustment needed. Naturally
> this will alter your brightness level too.
> > but If add some blue, "B" raises....if I take off some green "x" 
> > raises....so what's up with that ?
> It's just the direction each primary drags the white point in x,y space.
> > so "B" stands for blue, but "x" and "y" have no direct link with R and G ?
> They're the chromaticity co-ordinates. They are used quite widely to describe
> an arbitrary white point. The various D (Daylight) white points or
> Black Body white points, as well as white points not on these
> two locus's can be described by the x,y co-ordinates.
> See <http://en.wikipedia.org/wiki/CIE_1931_color_space> for instance.
> > and also, you said that it was a bad idea to install a newer version of
>  > "libusb-win32-filter-bin" higher than the one you use in the modified 
> drivers
>  > .....but there's only "libusb-win32-filter-bin-" on the 
> official webpage.
> It should be OK for all devices except the HCFR instrument.
> > and "libusb-win32-filter-bin-" is nowhere to be found :(
> You can always install the driver provided with Argyll, it just isn't
> a filter driver. (I found the filter driver stuffed up device
> removal on my system, so I don't use it). This means you have to
> switch between drivers if you want to use the vendors software.
> > BTW, could you make the calibration window a bit more user friendly ?
> > I like to resize it by hand while doing precalibration in order to have
>  > it as big as possible and still read the results...
> Well, the reason it behaves as it does is to minimize the possibility
> of the measurements accidentally being messed up. If it is set to
> be a normal window, it may not be at the top, or could accidentally
> be covered by something else. The -p parameters give you
> some measure of control. Other calibration applications in fact
> cover the whole screen and don't allow anything else to be seen
> or done wile taking readings. There are good reasons for this
> with a CRT, since the colors of other windows near the
> test window quite noticeably affects the black level.
> Graeme Gill.

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