Re: odds and ends

[Ethan M. <merritt@u.washington.edu>]

On Wednesday 10 January 2007 12:58, you wrote:
> 
> Is that conventional in the graphics field?  
> That is, rather than just "transparent" it should be "opaque" 

"transparency" and "opacity" are complementary descriptions of the same property.
  see-through  	   <--------------> solid
transparency	1 <--------------> 0
opacity		0 <--------------> 1

It is most annoying that there is no consistency of whether an "alpha channel"
holds transparency or opacity.  Both conventions are used.

> and "saturation"? 

"Saturation" is one axis of HSV color specification.
It runs from 0 (neutral) to 1 (full color in question)

http://en.wikipedia.org/wiki/Saturation_(color_theory)