A mode-mapping and optimized MV conjunction based MGS-scalable SVC to AVC IPPP transcoder

Lei Sun, Zhenyu Liu, Takeshi Ikenaga

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

2 Citations (Scopus)

Abstract

Scalable Video Coding (SVC) is an extension of H.264/AVC, aiming to provide the ability to adapt to heterogeneous environments. It offers great flexibility for bitstream adaptation in multi-point applications such as videoconferencing. However, transcoding between SVC and AVC is necessary due to the existence of legacy AVC-based systems. This paper proposes a 3-stage fast SVC-to-AVC transcoder for medium-grain quality scalability (MGS). Hierarchical-P structured SVC bitstream is transcoded into IPPP structured AVC bitstream with multiple reference frames. In the first stage, mode decision is accelerated by proposed SVC-to-AVC mode mapping scheme. In the second stage, INTER motion estimation is accelerated by an optimized motion vector (MV) conjunction method to predict the MV with a reduced search range. In the last stage, Hadamard-based all zero block (AZB) detection is utilized for early termination. Simulation results show that proposed transcoder achieves very similar coding efficiency as the optimal result, but with averagely 92.3% computational time saving.

Original languageEnglish
Title of host publicationProceedings - IEEE International Symposium on Circuits and Systems
Pages1648-1651
Number of pages4
DOIs
Publication statusPublished - 2013
Event2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013 - Beijing
Duration: 2013 May 192013 May 23

Other

Other2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013
CityBeijing
Period13/5/1913/5/23

Fingerprint

Scalable video coding
Scalability
Motion estimation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Sun, L., Liu, Z., & Ikenaga, T. (2013). A mode-mapping and optimized MV conjunction based MGS-scalable SVC to AVC IPPP transcoder. In Proceedings - IEEE International Symposium on Circuits and Systems (pp. 1648-1651). [6572179] https://doi.org/10.1109/ISCAS.2013.6572179

A mode-mapping and optimized MV conjunction based MGS-scalable SVC to AVC IPPP transcoder. / Sun, Lei; Liu, Zhenyu; Ikenaga, Takeshi.

Proceedings - IEEE International Symposium on Circuits and Systems. 2013. p. 1648-1651 6572179.

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

Sun, L, Liu, Z & Ikenaga, T 2013, A mode-mapping and optimized MV conjunction based MGS-scalable SVC to AVC IPPP transcoder. in Proceedings - IEEE International Symposium on Circuits and Systems., 6572179, pp. 1648-1651, 2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013, Beijing, 13/5/19. https://doi.org/10.1109/ISCAS.2013.6572179
Sun L, Liu Z, Ikenaga T. A mode-mapping and optimized MV conjunction based MGS-scalable SVC to AVC IPPP transcoder. In Proceedings - IEEE International Symposium on Circuits and Systems. 2013. p. 1648-1651. 6572179 https://doi.org/10.1109/ISCAS.2013.6572179
Sun, Lei ; Liu, Zhenyu ; Ikenaga, Takeshi. / A mode-mapping and optimized MV conjunction based MGS-scalable SVC to AVC IPPP transcoder. Proceedings - IEEE International Symposium on Circuits and Systems. 2013. pp. 1648-1651
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