Re: i1Profiler display measurements
Re: i1Profiler display measurements
- Subject: Re: i1Profiler display measurements
- From: Mark Stegman <email@hidden>
- Date: Thu, 19 Feb 2015 22:49:57 +1100
Roger, Ethan, Danny,
Far be it from me to try and steal any of Danny's thunder but I would like
to make a contribution.
Lifting the bonnet on these things is NOT my area of expertise but, as I
understand it the dmxf file is actually a CxF3 file (which is based on
XML). If you change the extension to .xml you can open it in any browser,
X-Code or even a text editor. The header reads...
<cc:CxF xmlns:cc="http://colorexchangeformat.com/CxF3-core" xmlns:xsi="
http://www.w3.org/2001/XMLSchema-instance">
This also applies to the Patch Sets and the Profile Settings. I haven't
explored all of the other folders but I would guess that its the same
story. These folders can all be found in the Application Support folder
(Library/Application Support/X-Rite/i1 Profiler/Display Measurements).
X-Rite published CxF3 as a proposed standard in 2009 and adopted xml as the
platform in order to facilitate greater flexibility and acceptance. It is
now going through the stages of being reviewed and adopted as an ISO
standard. How useful this is in solving your current problems is another
question. Patch Tool already provides you with many useful options.
For the record the measurement data *should* go into Library/Application
Support/X-Rite/i1 Profiler/Display Measurements however, when I went to
saved mine it did not default to this folder so I created one and placed it
there (which is handy for exporting as already reported.
ANOTHER curious feature, or problem depending on your perspective, that I
am having is that, once I have finished creating my display profile, I am
warned that saving it to the System is not an option. It goes into the
Library/Colorsync/Profiles/Displays folder. If I want to compare the
profile to another (e.g. AdobeRGB) I am prevented from loading it or any
other profiles into the 3D gamut view. I copied it to the same folder for
the User (Me, the administrator) but I had to use my password even though I
am logged on. I have since restarted the computer to see if that helped.
Computer says "No!".
In an attempt to satisfy myself that this was a Profiler problem and not
something else I created another display profile using it Color Navigator.
I encountered a similar problem telling me that my privileges for the
targeted folder (Display Profiles in the User's Library) were not to set to
Me (which they are) and did not allow the profiled to be saved. where that
leaves us I don't know.
The most positive thing I have gained from this discussion is losing my
self doubt about my proficiency with i1 Profiler.
Mark
On Thu, Feb 19, 2015 at 8:22 AM, dpascale <email@hidden> wrote:
> Ethan,
>
> "Can the Display-Reader module be used to measure the whitepoint for
> display measurement data? I'm thinking along the lines of showing a white
> patch, measuring it, and using that as the whitepoint value."
>
> Yes. Here is a screenshot of the tool:
> http://www.babelcolor.com/main_level/screen_shots/
> PatchTool_Display-Reader.htm
> The export dialog:
> http://www.babelcolor.com/main_level/screen_shots/
> PatchTool_Display-Reader_CGATS.htm
>
> You can contact me offlist if you prefer.
>
> Danny
>
>
> ----- Original Message ----- From: "Ethan Hansen" <
> email@hidden>
> To: "'dpascale'" <email@hidden>; "'Roger Breton'" <
> email@hidden>; "''colorsync-users?lists.apple.com' List'" <
> email@hidden>
> Sent: Wednesday, February 18, 2015 4:15 PM
> Subject: RE: i1Profiler display measurements
>
>
> From:
>>
>> However, this is non-normalized emission data. In other words, the
>>> WhitePoint is not normalized to Y=100 and the display WhitePoint will
>>> likely not match a standard Illuminant.
>>>
>>> When you open the cxf file, PatchTool will ask you to select an
>>> Illuminant, because it expects a reference Illuminant, which is always
>>> required for reflectance measurement. If your display is nearly spot-on a
>>> standard Illuminant (i.e. D50, D65), this selection makes sense. In most
>>> cases it does not.
>>>
>>
>> Danny,
>>
>> Thank you for helping clear up matters! Can the Display-Reader module be
>> used to measure the whitepoint for display measurement data? I'm thinking
>> along the lines of showing a white patch, measuring it, and using that as
>> the whitepoint value.
>>
>>
>>
>>
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