[XviD-devel] I/P/B frame decision
Marc FD
xvid-devel@xvid.org
Sun, 29 Sep 2002 11:26:04 +0200
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Hi
i tried histogram based movement detection, but i think it's not exactly =
what we need.
if i understand well, the best if we have dynamic bframes is :
scenechange : Iframe
fast motion : Pframe
slow motion : Bframe
right ??
in the current implementation,
we only need to differentiate fast/slow motion
because Iframe/Pframe decision is done in ME.
so i've created a little motion detector, who's very fast, easy for =
SIMD,
and quite good (less noise/alignement sensitivity than a image_mad)
if i want to test it, i only need to replace "image_mad()>30"
by my decision, right ??
BTW, i can't test SysKin MEanalysis based detection, because it breaks =
Bframes.
Regards,
MarcFD marc.fd@libertysurf.fr
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<DIV><FONT size=3D2>Hi</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>i tried histogram based movement detection, but =
i=20
think it's not exactly what we need.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>if i understand well, the best if we have dynamic =
bframes is=20
:</FONT></DIV>
<DIV><FONT size=3D2>scenechange : Iframe</FONT></DIV>
<DIV><FONT size=3D2>fast motion : Pframe</FONT></DIV>
<DIV><FONT size=3D2>slow motion : Bframe</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>right ??</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>in the current implementation,</FONT></DIV>
<DIV><FONT size=3D2>we only need to differentiate fast/slow=20
motion</FONT></DIV>
<DIV><FONT size=3D2>because Iframe/Pframe decision is done in =
ME.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>so i've created a little motion detector, who's very =
fast,=20
easy for SIMD,</FONT></DIV>
<DIV><FONT size=3D2>and quite good (less noise/alignement sensitivity =
than a=20
image_mad)</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>if i want to test it, i only need to replace=20
"image_mad()>30"</FONT></DIV>
<DIV><FONT size=3D2>by my decision, right ??</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>BTW, i can't test SysKin MEanalysis based detection, =
because=20
it breaks Bframes.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>Regards,</FONT></DIV>
<DIV><FONT size=3D2>MarcFD <A=20
href=3D"mailto:marc.fd@libertysurf.fr">marc.fd@libertysurf.fr</A></FONT><=
/DIV></BODY></HTML>
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