[argyllcms] Re: Dispcal on WinXPSP2+ i1pro

  • From: Roger Breton <graxx@xxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Sat, 03 Nov 2007 17:38:16 -0400

>> So far so good. Now, what I don't understand is why did the program went
>> through a second round of instrument calibration below?
> 
> Seems like a second instance of dispcal was being run.

Hi Graeme,

By the time you read this you may be in Scottsdale -- ah! The sun.

Anyhow, good news! I found the 'bug'. It was a usage problem. Remember what
my command line for dispcal was :

> dispcal -v -yl -w 0.3457,0.3585 -b90 -gl -e1 -K -H 245bw

Well, it turned out that the -K parameter was the culprit. As indicated in
the online documentation, the K parameter is designed for the DTP92 and
Optix. 

I'm having difficulty with specifying the -w parameter? It seems dispcal
only accepts "-w 0,3457 0,3585". But that causes the target white point to
be garbled as evidenced by the following:

> Display type is LCD
> Target white = xy 0.000000 3457.000000
> Target brightness = 90.000000 cd/m^2
> Target gamma = L* curve

The online documentation says the following:

> Note that the x,y numbers must be specified as a single string (no space
> between the numbers and the comma).

But does not give any example of how to specify x and y.

I tried typing: "-w 0.3457,0.3585" or "-w0.3457,0.3585" or "-w
0.3457,0,3585" and each time I got an error. The only way I found to specify
the target chromaticity is "-w 0,3457 0,3585" but, as I indicated, this
results in garbled chromaticity to be reported by dispcal. Maybe this is
only in reporting and internally dispcal is really using 0.3457 and 0.3585
but I don't have anyway to know that.

Roger Breton 



Other related posts: