During MPEG Motion Compensation, why must the
"reconstructed" (the one that pass through DCT,
Quantization...) previous frame be used for prediction
instead of the "original" previous frame?
MPEG-4 Motion Compensation
Motion compensation is essenstially prediction. This is done so that
both encoder and decoder have the same frame for prediction. This is called
as closed loop DPCM.
Architect - Video Codecs
Multimedia Technologies Division
----- Original Message -----
From: "Federico Sambilay" <>
Sent: Monday, February 16, 2004 4:18 PM
Subject: [imagedsp] MPEG-4 Motion Compensation > Hi!
> During MPEG Motion Compensation, why must the
> "reconstructed" (the one that pass through DCT,
> Quantization...) previous frame be used for prediction
> instead of the "original" previous frame?
> __________________________________ >
> Note: If you do a simple "reply" with your email client, only the author
of this message will receive your answer. You need to do a "reply all" if
you want your answer to be distributed to the entire group.
> About this discussion group:
> To Join:
> To Post:
> To Leave:
> Archives: http://www.yahoogroups.com/group/imagedsp
> More Groups: http://www.dsprelated.com
> Yahoo! Groups Links >