In message <[EMAIL PROTECTED]>, "Timothy Miller" writes: > On 3/16/06, Dieter <[EMAIL PROTECTED]> wrote: > > > There will definitely be three LUTs for video. There's not a lot we > > > can do to get MORE than 8 bits out, although we can temporally > > > modulate it to trick the eye into seeing more shades. > > > > Word is that this trick doesn't work well. > > > > The reason it doesn't work well is because it's not linear. With both > LCD and CRT monitors, the rise and fall times are not the same. For > that matter, even if they were, we'd get an "in between" level that > was linearly between the two base levels in LUMINANCE space (gamma 1), > while what we want is for it to be linear in LUMA space (gamma 2.2). > > I successfully used a four-frame temporal modulation for medical LCD > monitors. I probably shouldn't go into the details, but I just > assumed that the "in betweens" were linear in luminance space (even > though I know that's not exactly right). Based on that, I could > select levels I wanted and exceed DICOM standards. > > Is this ideal? No. But if you know the math, you can make it work.
I'm not referring to getting the precise color desired. I'm referring to tricking the human eye with temporal modulation. Some people are bothered by fluorescent lights. Some people (probably the same ones) are bothered by CRTs with the refresh too slow. Some people (probably the same ones) are bothered by attempts to get extra color depth with temporal modulation. _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
