Adaptive rate estimation for H.264/AVC intra mode decision

Ke Ying Liao, Jar-Ferr Yang, Ming Ting Sun

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In this paper, a modified bit-rate estimation method is proposed to reduce the computation for 4×4 intra mode decision of H.264/AVC video encoder. The number of coded bits is modeled by a linear combination of existing coding parameters, which are highly related to the entropy coding of H.264/AVC. Furthermore, to improve the accuracy of the estimation, the proposed scheme is made adaptive to the information obtained from previously coded blocks. Comparing to the original rate distortion optimized (RDO) encoding process, which needs to calculate the actual encoded bits of H.264/AVC for each coding mode, the proposed adaptive rate estimation can save about 28% and 21% of the total encoding time for QCIF and VGA sequences, respectively. For the coding performance, the proposed method achieves nearly no loss in visual quality with only slight bit-rate increases.

Original languageEnglish
Title of host publication2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP
Pages1157-1160
Number of pages4
DOIs
Publication statusPublished - 2008
Event2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP - Las Vegas, NV, United States
Duration: 2008 Mar 312008 Apr 4

Other

Other2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP
CountryUnited States
CityLas Vegas, NV
Period08-03-3108-04-04

Fingerprint

coding
Entropy
coders
entropy

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Signal Processing
  • Acoustics and Ultrasonics

Cite this

Liao, K. Y., Yang, J-F., & Sun, M. T. (2008). Adaptive rate estimation for H.264/AVC intra mode decision. In 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP (pp. 1157-1160). [4517820] https://doi.org/10.1109/ICASSP.2008.4517820
Liao, Ke Ying ; Yang, Jar-Ferr ; Sun, Ming Ting. / Adaptive rate estimation for H.264/AVC intra mode decision. 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP. 2008. pp. 1157-1160
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year = "2008",
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Liao, KY, Yang, J-F & Sun, MT 2008, Adaptive rate estimation for H.264/AVC intra mode decision. in 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP., 4517820, pp. 1157-1160, 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP, Las Vegas, NV, United States, 08-03-31. https://doi.org/10.1109/ICASSP.2008.4517820

Adaptive rate estimation for H.264/AVC intra mode decision. / Liao, Ke Ying; Yang, Jar-Ferr; Sun, Ming Ting.

2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP. 2008. p. 1157-1160 4517820.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - In this paper, a modified bit-rate estimation method is proposed to reduce the computation for 4×4 intra mode decision of H.264/AVC video encoder. The number of coded bits is modeled by a linear combination of existing coding parameters, which are highly related to the entropy coding of H.264/AVC. Furthermore, to improve the accuracy of the estimation, the proposed scheme is made adaptive to the information obtained from previously coded blocks. Comparing to the original rate distortion optimized (RDO) encoding process, which needs to calculate the actual encoded bits of H.264/AVC for each coding mode, the proposed adaptive rate estimation can save about 28% and 21% of the total encoding time for QCIF and VGA sequences, respectively. For the coding performance, the proposed method achieves nearly no loss in visual quality with only slight bit-rate increases.

AB - In this paper, a modified bit-rate estimation method is proposed to reduce the computation for 4×4 intra mode decision of H.264/AVC video encoder. The number of coded bits is modeled by a linear combination of existing coding parameters, which are highly related to the entropy coding of H.264/AVC. Furthermore, to improve the accuracy of the estimation, the proposed scheme is made adaptive to the information obtained from previously coded blocks. Comparing to the original rate distortion optimized (RDO) encoding process, which needs to calculate the actual encoded bits of H.264/AVC for each coding mode, the proposed adaptive rate estimation can save about 28% and 21% of the total encoding time for QCIF and VGA sequences, respectively. For the coding performance, the proposed method achieves nearly no loss in visual quality with only slight bit-rate increases.

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Liao KY, Yang J-F, Sun MT. Adaptive rate estimation for H.264/AVC intra mode decision. In 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP. 2008. p. 1157-1160. 4517820 https://doi.org/10.1109/ICASSP.2008.4517820