RE: Repurposing HSV on SGIs
RE: Repurposing HSV on SGIs
- Subject: RE: Repurposing HSV on SGIs
- From: Henrik Holmegaard <email@hidden>
- Date: Sat, 10 Feb 2001 17:58:39 +0100
I would think it probably uses LAB internally and then sends signals to the
monitor, defined by what the monitor can show, phosphors and all.
It seems to me it's probably not
about an internal RGB with abstract phosphor sets, but LAB chucked through
the monitor's physical limits.
This sounds like the application would have a concept of device
independence. And I thought the idea was that the Irix drawing
application didn't.
Anyway, as I understand this thread, the Irix application hands off
RGB pixels and puts an HSV interface on the RGB channels for ease of
use.
I'd think the application's developers would look for an internal
application RGB space close to that of a monitor since the behaviour
of actual phosphors over long periods of time is known (this is why
the AppleVision / ColorSync embedded monitor calibration works).
So to find the internal RGB space of the application, it seems
reasonable to ask, What kind of monitor hardware does this app assume
SGI users will have (= what kind of monitors does SGI sell?) and what
information is available about the average color space of this
monitor hardware?
The alternative is to use an actual monitor from among those in the
workgroup as assumed source profile.
--
Henrik Holmegaard
TechWrite, Denmark