RE: Gray Balance and Rip Linearization
RE: Gray Balance and Rip Linearization
- Subject: RE: Gray Balance and Rip Linearization
- From: "Bertho" <email@hidden>
- Date: Sun, 28 Nov 2004 21:47:00 -0500
Roger,
You mention 2 ways of gray but is there not a third defined condition.
If a surface reflectance is compared to an absolute white reflectance standard
and its absolute reflectance is 18%, for example, over the visible spectrum,
would not that be defined as 18% gray?
If yellow light is shined on it, it will look yellow and correspondingly for
other colors. But the surface is still gray, regardless what it looks like to
the brain.
Bertho
> -----Original Message-----
> From: Roger Breton Sent: Sunday, November 28, 2004 20:28
> This whole business of gray balance is very dear to my heart. What is gray?
> And do we judge gray? Relative to what?
>
> I suggest there are two ways of approaching gray.
---snip
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