[M4IF Technotes] Motion vectors and Modes

[William J. Fulco]

Peter,
Here's a handy-dandy article I have in the files.... (I cut/paste the bib
reference)
"Transcoding" should give you good insights into difference/similarities
(if you want I can copy and run it over :-)...
++Bill
1.   Motion vector synthesis algorithm for MPEG2-to-MPEG4 transcoder
Takahashi, K.;(Shirota Digital Systems Laboratory, Info. and Network
Technologies Lab., Sony Corporation, Tokyo, Japan);Satoh, K.;Suzuki,
T.;Yagasaki, Y.; Source: Proceedings of SPIE - The International Society for
Optical Engineering, v 4310, 2001, Visual Communications and Image
Processing 2001, Jan 24-26 2001, San Jose, CA, p 872-882 Sponsored by: SPIE
ISSN: 0277-786X CODEN: PSISDG In English
Abstract: We have developed a Motion Vector (MV) Synthesis algorithm for an
MPEG2-to-MPEG4 transcoder. MPEG2 bitstream parameters are utilized to
adaptively scale and refine the MPEG2 MVs to synthesize MPEG4 MVs. The
simulation results show that our MV Synthesis algorithm produces results
that are equivalent to VM Full Search in both coding efficiency and
subjective image quality, with significant reduction in complexity.
William J. Fulco
wjf   NetworkXXIII.com
310-927-4263 Cell
---------------------------------
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have to refute every fallacy in the room.
> -----Original Message-----
> From: technotes-admin   lists.m4if.org
> [mailto:technotes-admin   lists.m4if.org]On Behalf Of Peter Forman
> Sent: Thursday, May 02, 2024 8:43 AM
> To: technotes   lists.m4if.org
> Subject: [M4IF Technotes] Motion vectors and Modes
>
>
>
> Does anyone know of any papers documenting the similarities and
> differences in motion vectors and modes between MPEG2 and MPEG4? Or
> between MPEG4 and H.26L/JVT WD? Pointers to any such work would be
> appreciated.
>
> Peter
>
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