Carlo L. Tiana (carlo++at++vision.arc.nasa.gov)
Tue, 23 May 1995 12:18:33 -0700
I would like to use Performer, (read: 'perfly' with as few mods as possible)
to simulate a noisy greyscale 'camera'.
The first question that arises is whether Performer has any hooks for
greyscale rendering.
The next question is whether one could use the alpha channel to model noise
as a transparency phenomenon (not that this is the case, but maybe it'll
look 'good enough'), and if so, how to do this. My thought was to precompute
a big noise image and, on a frame-by-frame basis (noise is dynamic), copy
different regions of it into the alpha channel.
Finally, I expect to have a fairly sparse database, but with each object
having a unique color or gray, which is not necessarily the shade with
which I would like the object to appear in the final rendered image.
Thus, I want to use an object's gray (or color triad) as a tag to be looked
up into a LUT that tells me what that objects gray really needs to be.
Any suggestions on how to do this?
For extra credit :-), does anyone have comments on how to deal with the
fact that turning on antialiasing will generate unforeseen 'grays' whose
values will be either not valid not exist in my lookup table?
Thank you very much,
Carlo Tiana
carlo++at++vision.arc.nasa.gov
This archive was generated by hypermail 2.0b2 on Mon Aug 10 1998 - 17:51:30 PDT