[FFmpeg-devel] [PATCH] lavfi: add xbr filter

[Michael Niedermayer]

On Sat, Nov 01, 2014 at 11:35:11PM +0530, arwa arif wrote:
> Scale2x and xBR are very different. But they have implemented xBR also in
> their source code. Anyways, I found a good link --> "
> http://imgur.com/a/XAwx5" for reference pictures. But, the answers are
> coming out to be different. Not sure, why this is happening. Maybe, it is
> because of different versions.

the version which you implemented, where is the reference code for
that ?
can it be build on linux or windows ?
if so we could build it and test against that
    

> 
> On Sat, Nov 1, 2014 at 10:02 PM, Michael Niedermayer <michaelni at gmx.at>
> wrote:
> 
> > On Sat, Nov 01, 2014 at 07:30:32PM +0530, arwa arif wrote:
> > > On Sat, Nov 1, 2014 at 4:40 PM, Stefano Sabatini <stefasab at gmail.com>
> > wrote:
> > >
> > > > On date Saturday 2014-11-01 04:27:24 +0530, arwa arif encoded:
> > > > [...]
> > > > > On Fri, Oct 31, 2014 at 6:31 PM, Stefano Sabatini <
> > stefasab at gmail.com>
> > > > > From 9b6b1d546247cf61b2f696835fb8a5e782d353ea Mon Sep 17 00:00:00
> > 2001
> > > > > From: Arwa Arif <arwaarif1994 at gmail.com>
> > > > > Date: Thu, 30 Oct 2014 22:06:20 +0530
> > > > > Subject: [PATCH] [PATCH]lvafi: add xbr filter
> > > >
> > > > typo: lvafi
> > > >
> > > > >
> > > > > ---
> > > > >  doc/filters.texi         |    5 +
> > > > >  libavfilter/Makefile     |    1 +
> > > > >  libavfilter/allfilters.c |    1 +
> > > > >  libavfilter/vf_xbr.c     |  331
> > > > ++++++++++++++++++++++++++++++++++++++++++++++
> > > > >  4 files changed, 338 insertions(+)
> > > > >  create mode 100644 libavfilter/vf_xbr.c
> > > > [...]
> > > >
> > > > Code looks good to me, apart a few cosmetics nits which I can fix
> > > > myself before pushing.
> > > >
> > > > About Michael's question, is it possible to compare it with the
> > > > reference filter?
> > > >
> > >
> > > I compared the output with the code from scale2x "
> > > http://scale2x.sourceforge.net/". I have attached the ouput with this
> > mail.
> > > foobar.png denotes the original image.
> > > foobar_ref,png denotes the output from scale2x.
> > > foobar_out.png denotes the output from the code written.
> >
> > the ref and out images look somewhat different
> > also, what is the relation between scale2x and xbr ?
> >
> > http://scale2x.sourceforge.net/index.html
> > states that
> > "Other interesting effects are HQx and xBR. These effects are a bit slower
> > than Scale2x, but surely in the grasp of modern processors. "
> >
> > This does not sound like scale2x and xbr are the same thing
> >
> > [...]
> >
> >
> > --
> > Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
> >
> > Freedom in capitalist society always remains about the same as it was in
> > ancient Greek republics: Freedom for slave owners. -- Vladimir Lenin
> >
> > _______________________________________________
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> >
> >
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-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Opposition brings concord. Out of discord comes the fairest harmony.
-- Heraclitus
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