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. _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
