On 9 Nov 2007, at 6:00 pm, Jim Ault wrote:
You probably need to 1) calibrate the monitors on some computers
running
different OSes/monitors, 2) set the transparency+background of a test
pattern (like they do in TV broadcasting), 3) then build a curve
that gets
you the 'human linear' transparency values. Do one according to
your eye,
then see if others agree with you.
Thanks, Jim.
Maybe I could do that by building some kind of calibration routine
into the procedure itself. Maybe this could establish individual
transparency thresholds irrespective of hardware, software, mindware
and eyewear ;-)
Now, how did those old psycho-physicists determine the Just
Noticeable Difference? Wikipedia here I come
Best Wishes,
David Glasgow
Carlton Glasgow Partnership
http://www.i-psych.co.uk
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