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Discussion Groups | Image Signal Processing | MPEG-4 Motion Compensation
Technical Discussions related to Image Processing (image coding, compression, digital effects, mpeg, etc)
MPEG-4 Motion Compensation - Federico Sambilay - Feb 16 10:48:00 2004
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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? Thanks! __________________________________ |
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Re: MPEG-4 Motion Compensation - Korada Ramkishor - Feb 17 3:15:00 2004
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Hi, 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. regards, ramkishor Architect - Video Codecs Multimedia Technologies Division Emuzed India Bangalore www.emuzed.com ----- Original Message ----- From: "Federico Sambilay" <> To: <> 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? > > Thanks! > > __________________________________ > > > _____________________________________ > > Yahoo! Groups Links |
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