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.
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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).
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Ryu, Ek., Nam, Jh., Lee, So., Jo, Hh., Sim, Dg. (2013). Sample Adaptive Offset Parallelism in HEVC. In: Park, J., Ng, JY., Jeong, HY., Waluyo, B. (eds) Multimedia and Ubiquitous Engineering. Lecture Notes in Electrical Engineering, vol 240. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-6738-6_137
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DOI: https://doi.org/10.1007/978-94-007-6738-6_137
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