[FFmpeg-devel] [GSoC] Motion Interpolation

[Davinder Singh]

On Thu, Aug 11, 2016 at 9:09 PM Paul B Mahol <onemda at gmail.com> wrote:

> On 8/10/16, Davinder Singh <ds.mudhar at gmail.com> wrote:
> > On Mon, Jul 25, 2016 at 9:35 AM Davinder Singh <ds.mudhar at gmail.com>
> wrote:
> >
> >> https://github.com/dsmudhar/FFmpeg/commits/dev
> >>
> >> The Paper 2 algorithm is complete. It seems good. If I compare Paper 2
> >> (which uses bilateral motion estimation) v/s motion vectors exported by
> >> mEstimate filter:
> >>
> >> $ tiny_psnr 60_source_2.yuv 60_mest-esa+obmc.yuv
> >> stddev:    1.43 PSNR: 45.02 MAXDIFF:  174 bytes:476928000/474163200
> >>
> >> $ tiny_psnr 60_source_2.yuv 60_paper2_aobmc+cls.yuv
> >> stddev:    1.25 PSNR: 46.18 MAXDIFF:  187 bytes:476928000/474163200
> >>
> >> Frame comparison: http://www.mediafire.com/?qe7sc4o0s4hgug5
> >>
> >> Compared to simple OBMC which over-smooth edges, Objects clustering and
> >> Adaptive OBMC makes the edges crisp but also introduce blocking
> artifacts
> >> where MVs are bad (with default search window = 7). But I think it’s
> ESA’s
> >> fault. The paper doesn’t specify which motion estimation method they
> used;
> >> I have been using ESA. I think quality can be further improved with
> EPZS,
> >> which I'm going to implement.
> >>
> >> I also tried to tweak VS-BMC (Variable size block motion compensation)
> >> which reduced the blocking artifacts in VS-BMC area. Had to do
> experiments
> >> a lot, more to be done.
> >>
> >> mEstimate filter (ESA) + Simple OBMC:
> >> http://www.mediafire.com/?3b8j1zj1lsuw979
> >> Paper 2 (full): http://www.mediafire.com/?npbw1iv6tmxwvyu
> >>
> >>
> >> Regards,
> >> DSM_
> >>
> >
> >
> >
> > implemented all other modern fast ME algorithms:
> > https://github.com/dsmudhar/FFmpeg/blob/dev/libavfilter/vf_mestimate.c
>
> Could you please squash your commits and attach patches that add
> vf_mestimate
> and vf_minterpolate filters?
>

will send very soon.


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