[opendtv] Re: My PowerPoints
- From: Tom Barry <trbarry@xxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Tue, 20 Oct 2009 20:56:51 -0400
Cool. That suggest at least a possibility the aperture part of the
problem can be helped for HD by Moore's law. I think convolution is
one of those things that can be greatly helped by the massive
multiprocessor GPU cards if it was done at capture or telecine time.
And it sounds like the necessary math has already been studied.
I believe some of the very complicated deconvolution techniques spend
all their processing power trying to figure out which distortions they
are trying to deconvolve. But maybe the aperture problem is simple
enough they can just predict it ahead of time for any given aperture and
camera design. Dunno.
- Tom
Mark Schubin wrote:
> It's an interesting question. I have personally seen image deconvolution
> bring
> out-of-focus images back into focus and images blurred by camera motion
> brought
> back to clarity. So I have high hopes for digital processing eventually
> dealing
> with diffraction and lens aberrations.
>
> Eventually.
>
> The first paper I read (which showed examples of successful re-focus and
> de-blur
> deconvolution) was published in the Proceedings of the IEEE in 1968.
>
> TTFN,
> Mark
>
>
> Tom Barry wrote:
> > Hi Mark -
> >
> > I still don't know much about optics but I have a possibly dumb question
> > about your linked "The Hole Thing" article and the distortion caused by
> > diffraction. Some times mathematically predictable image distortions
> > can be reversed by some complex video processing. Is this true for
> > diffraction? Or does the attempt mostly just cause ringing like many
> > sharpening or edge enhancement algorithms?
> >
> > - Tom
> >
> >
> >
> > Mark Schubin wrote:
> >
> >> A lot of people have asked for my AES, IBC, and HD World PowerPoints
> >> from my presentations last week. They may be downloaded from my
> >> Schubin Cafe site:
> >> http://schubincafe.com
> >>
> >> Click on "Get the Download" at the top.
> >>
> >> TTFN,
> >> Mark
> >>
> >>
> >>
> >> ----------------------------------------------------------------------
> >> You can UNSUBSCRIBE from the OpenDTV list in two ways:
> >>
> >> - Using the UNSUBSCRIBE command in your user configuration settings at
> >> FreeLists.org
> >> - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word
> >> unsubscribe in the subject line.
> >>
> >>
> >>
> >
> >
> >
> > ----------------------------------------------------------------------
> > You can UNSUBSCRIBE from the OpenDTV list in two ways:
> >
> > - Using the UNSUBSCRIBE command in your user configuration settings at
> > FreeLists.org
> >
> > - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word
> > unsubscribe in the subject line.
> >
> >
> >
> >
> ---------------------------------------------------------------------- You
> can
> UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE
> command
> in your user configuration settings at FreeLists.org - By sending a message
> to:
> opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.
>
----------------------------------------------------------------------
You can UNSUBSCRIBE from the OpenDTV list in two ways:
- Using the UNSUBSCRIBE command in your user configuration settings at
FreeLists.org
- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word
unsubscribe in the subject line.
Other related posts:
