[Bf-funboard] Field-Aware compositor nodes

[Bassam Kurdali]

I guess it would be possible for each set of fields (even or odd) to
create an interpolated line of pixels where the other field is and use
that resultant image (one per field) to do the blur- or maybe just take
each field as a half height image, blur it with half the vertical blur
distance, then split them back into fields..
this would be faster than rendering at 60 frames per second, then doing
the fields as a post process, but would not look as good.
yeah, a naive blur does look horrible (I speak from having fallen into
that trap.)

It would be good to implement a field aware compositor, since some
source footage might not be 3d- it could be interlaced video, and it
would be good to be able to handle that gracefully in the compositor.
I hope fields die the miserable death they deserve one of these days.
bassam <-- a "progressive" ;)

On Wed, 2008-02-20 at 08:55 -0800, Martin Poirier wrote:
> If you did it the naive way, which is what we do now I
> assume, yes, it would look like crap.
> 
> Martin
> 
> --- Chris Burt <desoto at exenex.com> wrote:
> 
> > So the answer to my question is yes?
> > 
> > --Chris
> > 
> > On Wed, Feb 20, 2008 at 10:55 AM, Martin Poirier
> > <theeth at yahoo.com> wrote:
> > > You wouldn't blur the source as is.
> > >
> > >  A smart neighborhood operation on interlaced
> > source
> > >  could skip odd/even lines, interpolating to
> > >  reconstitute the missing data (basically trying
> > to
> > >  separate the interlaced data into two full sized
> > >  sources), but as I said, I doubt there's enough
> > data
> > >  to give a good result.
> > >
> > >  Martin
> > >
> > >
> > >
> > >  --- Chris Burt <desoto at exenex.com> wrote:
> > >
> > >  > Wouldn't it look awful to blur interlaced
> > video?
> > >  >
> > >  > --Chris
> > >  >
> > >  > On Sun, Feb 17, 2008 at 4:54 PM, Martin Poirier
> > >  > <theeth at yahoo.com> wrote:
> > >  > > It's probably the best option anyway. Using
> > >  > fields,
> > >  > >  there's too much data missing to do a good
> > blur
> > >  > (or
> > >  > >  any other neighborhood operations).
> > >  > >
> > >  > >  Martin
> > >  > >
> > >  > >
> > >  > >
> > >  > >  --- Bassam Kurdali
> > <bkurdali at freefactory.org>
> > >  > wrote:
> > >  > >
> > >  > >  > yeah, I noticed that too the other day,
> > came to
> > >  > the
> > >  > >  > same conclusion
> > >  > >  > (60fps, convert to fields after)
> > >  > >  >
> > >  > >  > On Fri, 2008-02-15 at 09:44 -0900, Tom M
> > wrote:
> > >  > >  > > Hmm that should probably be filed as a
> > bug
> > >  > report,
> > >  > >  > instead of a feature request.
> > >  > >  > >
> > >  > >  > > LetterRip
> > >  > >  > >
> > >  > >  > > On Fri, Feb 15, 2008 at 7:46 AM, Flávio
> > >  > Cardoso
> > >  > >  > Ferreira Pontes
> > >  > >  > > <flaviocpontes at gmail.com> wrote:
> > >  > >  > >
> > >  > >  > > >
> > >  > >  > > >  Anyway, that's my feature suggestion:
> > To
> > >  > make
> > >  > >  > the node compositor/sequencer
> > >  > >  > > > effects/nodes field-aware.
> > >  > >  > > >
> > >  > >  > > >  --
> > >  > >  > > > Flávio Cardoso Pontes
> > >  > >  > > >
> > >  > >  > > > Designer e Videografista
> > >  > >  > > > geekemevolucao.wordpress.com
> > >  > >  > > >
> > >  > >  > > >
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