Details
| Original language | English |
|---|---|
| Title of host publication | 25th PCS Proceedings |
| Subtitle of host publication | Picture Coding Symposium 2006, PCS2006 |
| Publication status | Published - 2006 |
| Event | 25th PCS: Picture Coding Symposium 2006, PCS2006 - Beijing, China Duration: 24 Apr 2006 → 26 Apr 2006 |
Abstract
Two fast mode decision methods for intra prediction in H.264 are proposed in this work to reduce the encoder complexity. The first method, the so-called two-level fast Intra4×4 mode decision, is based on the idea of reducing possible candidate directions of a 4×4 luma block in Intra4×4 mode decision. The second method enables an early selection of suitable 4×4 or 16×16 luma partitions of a given macroblock. The performance of the proposed algorithms are evaluated using the H.264 reference codec JM 10.1, which is compared with exhaustive RD mode decision of H.264 in metrics such as the encoding time, the average PSNR and the coding bit-rate for test sequences. It is observed that the proposed fast algorithms can save about 52% of encoding time resulting in a minor PSNR degradation of 0.03dB lower PSNR and a 2.5% higher bit rate.
Keywords
- Fast intra mode decision, H.264/AVC, Video coding
ASJC Scopus subject areas
- Engineering(all)
- General Engineering
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25th PCS Proceedings: Picture Coding Symposium 2006, PCS2006. 2006.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Intra-prediction mode decision for H.264 in two steps
AU - Ri, Song Hak
AU - Ostermann, Joern
PY - 2006
Y1 - 2006
N2 - Two fast mode decision methods for intra prediction in H.264 are proposed in this work to reduce the encoder complexity. The first method, the so-called two-level fast Intra4×4 mode decision, is based on the idea of reducing possible candidate directions of a 4×4 luma block in Intra4×4 mode decision. The second method enables an early selection of suitable 4×4 or 16×16 luma partitions of a given macroblock. The performance of the proposed algorithms are evaluated using the H.264 reference codec JM 10.1, which is compared with exhaustive RD mode decision of H.264 in metrics such as the encoding time, the average PSNR and the coding bit-rate for test sequences. It is observed that the proposed fast algorithms can save about 52% of encoding time resulting in a minor PSNR degradation of 0.03dB lower PSNR and a 2.5% higher bit rate.
AB - Two fast mode decision methods for intra prediction in H.264 are proposed in this work to reduce the encoder complexity. The first method, the so-called two-level fast Intra4×4 mode decision, is based on the idea of reducing possible candidate directions of a 4×4 luma block in Intra4×4 mode decision. The second method enables an early selection of suitable 4×4 or 16×16 luma partitions of a given macroblock. The performance of the proposed algorithms are evaluated using the H.264 reference codec JM 10.1, which is compared with exhaustive RD mode decision of H.264 in metrics such as the encoding time, the average PSNR and the coding bit-rate for test sequences. It is observed that the proposed fast algorithms can save about 52% of encoding time resulting in a minor PSNR degradation of 0.03dB lower PSNR and a 2.5% higher bit rate.
KW - Fast intra mode decision
KW - H.264/AVC
KW - Video coding
UR - http://www.scopus.com/inward/record.url?scp=34047112241&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:34047112241
SN - 300018726X
SN - 9783000187261
BT - 25th PCS Proceedings
T2 - 25th PCS: Picture Coding Symposium 2006, PCS2006
Y2 - 24 April 2006 through 26 April 2006
ER -