[MPlayer-dev-eng] [LONG] PSNR comparison, new source and results

[Michael Niedermayer]

Hi

On Tuesday 15 June 2004 15:35, Jan Knutar wrote:
> > >>a - don't use vlelim & vcelim, at least on that kind of scene at
> > >>     that kind of bitrate
> > >
> > > Did it ever show a psnr gain in any of your tests? I'd be surprised
> > > if it did.
> >
> > No. On the Matrix scene (2304 samples so 1152 of each),
> > vlelim diminished the PSNR of 1151 (1 was unchanged) and
> > vcelim diminisged the PSNT of 1150 (2 were unchanged).
> >
> > I won't use them again, I think :-)
>
> Yeah. I think vlelim and vcelim belong to the "psychovisual" enhancments
> category, the impossible to measure kind :-)
they belong to the standard committee ideas category, the idea behind them is 
IIRC that blocks which are allmost identical arent worth to be stored, so 
they work similar to our cbp option, allthough cbp should always be better

[...]
-- 
Michael
level[i]= get_vlc(); i+=get_vlc();		(violates patent EP0266049)
median(mv[y-1][x], mv[y][x-1], mv[y+1][x+1]);	(violates patent #5,905,535)
buf[i]= qp - buf[i-1];				(violates patent #?)
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