Sample Adaptive Offset Parallelism in HEVC

  • Eun-kyung Ryu
  • Jung-hak Nam
  • Seon-oh Lee
  • Hyun-ho Jo
  • Dong-gyu Sim
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 240)

Abstract

We propose a parallelization method for SAO, in-loop filter of HEVC. SAO filtering proceeds along CTB lines and there exists data dependency between inside and outside of CTB boundaries. Data dependency makes data-level parallelization hard. In this paper, we equally divided an entire frame into sub regions. With a little amount of memory, proposed method shows 1.9 times of performance enhancement in terms of processing time.

Keywords

Sample adaptive offset SAO SAO parallelism HEVC parallelism Multi-core parallelism In-loop filter 

Notes

Acknowledgments

This research was partly supported by the Samsung Electronics, and partly supported by the Ministry of Knowledge Economy (MKE), Korea, under the Information Technology Research Center (ITRC) support program (NIPA-2012-H0301-12-1011) supervised by the National IT Industry Promotion Agency (NIPA).

References

  1. 1.
    Wiegand T, Ohm J-R, Sullivan GJ, Han W-J, Joshi R, Tan TK, Ugur K (2010) Special section on the joint call for proposals on high efficiency video coding (HEVC) standardization. IEEE Trans Circuits Syst Video Technol 20(12):1661–1666Google Scholar
  2. 2.
    Fu C-M, Alshina E, Alshin A, Huang Y-W, Chen C-Y, Tsai C-Y, Hsu C-W, Lei S-M, Park JH, Han W-J (2012) Sample adaptive offset in the HEVC standard. IEEE Trans Circuits Syst Video Technol 22(12):1755–1764 Google Scholar
  3. 3.
    Chi CC, Alvarez-Mesa M, Juurlink B, Clare G, Henry F, Pateux S, Schierl T (2012) Parallel scalability and efficiency of HEVC parallelization approaches. IEEE Trans Circuits Syst Video Technol 22(12):1827–1838Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht(Outside the USA) 2013

Authors and Affiliations

  • Eun-kyung Ryu
    • 1
  • Jung-hak Nam
    • 1
  • Seon-oh Lee
    • 1
  • Hyun-ho Jo
    • 1
  • Dong-gyu Sim
    • 1
  1. 1.Computer EngineeringKwangwoon UniversitySeoulRepublic of Korea

Personalised recommendations