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

[arwa arif]

On Sun, Nov 2, 2014 at 3:36 AM, Michael Niedermayer <michaelni at gmx.at>
wrote:

> 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
> > >
> > > _______________________________________________
> > > ffmpeg-devel mailing list
> > > ffmpeg-devel at ffmpeg.org
> > > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> > >
> > >
> > _______________________________________________
> > ffmpeg-devel mailing list
> > ffmpeg-devel at ffmpeg.org
> > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> >
>
> --
> Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
>
>

> Opposition brings concord. Out of discord comes the fairest harmony.
> -- Heraclitus
>
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
>

The reference code I used was "https://github.com/carlosascari/2xBR-Filter".