[XviD-devel] Full Image Interpolation (was: need sad8bi for direct mode)

Michael Militzer xvid-devel@xvid.org
Tue, 23 Jul 2002 13:08:59 +0200


----- Original Message -----
From: "Christoph Lampert" <chl@math.uni-bonn.de>
To: <xvid-devel@xvid.org>
Sent: Tuesday, July 23, 2002 12:43 PM
Subject: Re: [XviD-devel] Full Image Interpolation (was: need sad8bi for
direct mode)


> > > But I thought Qpel did not use bilinear but some lowpass filtered
method
> > > of interpolation?
> >
> > yes and no. For the _halfpel_ positions lowpass filtered interpolation
is
> > used but the quarter pixels are calculated by performing a bilinear
> > interpolation between the halfpel and the fullpel pixels...
>
> Ah, I see!
> So when will we see Qpel decoding working?

hm, you know that such estimations tend to be always overoptimistic, but I'd
say: today? ;-)

The problem is that I have to change the current interpolation code
(including the asm code). And unexpected problems here will of course lead
to delays...


Michael