Details
| Original language | English |
|---|---|
| Title of host publication | 2009 IEEE International Symposium on Circuits and Systems |
| Subtitle of host publication | ISCAS 2009 |
| Pages | 1641-1644 |
| Number of pages | 4 |
| Publication status | Published - Jun 2009 |
| Event | 2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009 - Taipei, Taiwan Duration: 24 May 2009 → 27 May 2009 |
Publication series
| Name | Proceedings - IEEE International Symposium on Circuits and Systems |
|---|---|
| ISSN (Print) | 0271-4310 |
Abstract
In video coding standards like H.264 / MPEG-4 AVC, the encoder performs motion estimation in order to utilise temporal dependencies within a sequence. In addition to the rate of the residue, the encoder has to allocate bits for motion vectors required to compensate the motion at the decoder. This bit rate increases for smaller block sizes, since more motion vectors need to be transmitted. Therefore, motion compensation using dense motion vector field is not feasible for such an architecture. This paper proposes to estimate motion for coding of B frames at the decoder. Using this decoder-side motion estimation, the transmission of the motion vectors is not necessary and the bit rate is reduced. Furthermore, prediction quality is higher in many cases resulting in a coding gain of up to 1.7 dB at low bit rates and 0.2 dB at higher bit rates.
Keywords
- B frames, Direct mode, H.264 / MPEG-4 AVC, Interpolation, Motion compensation, Motion vector
ASJC Scopus subject areas
- Engineering(all)
- Electrical and Electronic Engineering
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2009 IEEE International Symposium on Circuits and Systems: ISCAS 2009. 2009. p. 1641-1644 5118087 (Proceedings - IEEE International Symposium on Circuits and Systems).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Decoder-side block motion estimation for H.264 / MPEG-4 AVC based video coding
AU - Klomp, Sven
AU - Munderloh, Marco
AU - Vatis, Yuri
AU - Ostermann, Jörn
PY - 2009/6
Y1 - 2009/6
N2 - In video coding standards like H.264 / MPEG-4 AVC, the encoder performs motion estimation in order to utilise temporal dependencies within a sequence. In addition to the rate of the residue, the encoder has to allocate bits for motion vectors required to compensate the motion at the decoder. This bit rate increases for smaller block sizes, since more motion vectors need to be transmitted. Therefore, motion compensation using dense motion vector field is not feasible for such an architecture. This paper proposes to estimate motion for coding of B frames at the decoder. Using this decoder-side motion estimation, the transmission of the motion vectors is not necessary and the bit rate is reduced. Furthermore, prediction quality is higher in many cases resulting in a coding gain of up to 1.7 dB at low bit rates and 0.2 dB at higher bit rates.
AB - In video coding standards like H.264 / MPEG-4 AVC, the encoder performs motion estimation in order to utilise temporal dependencies within a sequence. In addition to the rate of the residue, the encoder has to allocate bits for motion vectors required to compensate the motion at the decoder. This bit rate increases for smaller block sizes, since more motion vectors need to be transmitted. Therefore, motion compensation using dense motion vector field is not feasible for such an architecture. This paper proposes to estimate motion for coding of B frames at the decoder. Using this decoder-side motion estimation, the transmission of the motion vectors is not necessary and the bit rate is reduced. Furthermore, prediction quality is higher in many cases resulting in a coding gain of up to 1.7 dB at low bit rates and 0.2 dB at higher bit rates.
KW - B frames
KW - Direct mode
KW - H.264 / MPEG-4 AVC
KW - Interpolation
KW - Motion compensation
KW - Motion vector
UR - http://www.scopus.com/inward/record.url?scp=70350157944&partnerID=8YFLogxK
U2 - 10.1109/ISCAS.2009.5118087
DO - 10.1109/ISCAS.2009.5118087
M3 - Conference contribution
AN - SCOPUS:70350157944
SN - 9781424438280
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
SP - 1641
EP - 1644
BT - 2009 IEEE International Symposium on Circuits and Systems
T2 - 2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009
Y2 - 24 May 2009 through 27 May 2009
ER -