소프트웨어 기반 실시간 HEVC 인코더 구현을 위한 병렬화 기법에 관한 연구

Abstract

ISO/IEC MPEG+ITU-T VCEG!,-./JCT-VC (Joint Collaborative Team on Video Coding)01)2 3HEVC (High Efficiency Video Coding)4H.264/AVC 567289:;!% ?@A1.1)0BCDE. FGH, IJK2L40MN OP<Q+RSKTUVW <XYZ[04\]^_`abc-.GKCdeE. HEVC  <XYZ2f g FhEidjkdlmn!bC de-o, djkdlm-.pqe4jZr%H-.HEVC  </stF 4uv!eE. wxay4R1)0z{|HEVC  <FhSIMD }~2!!€q) , CPU GPU2!‚ƒ„ † +‡:Ei  E. ˆ, !‰ nHEVC  KF ^KŠ ‹ ŒŽ5Fh E. w ybHM (HEVC reference model) 10.0K+832×480 ‘%<’“20~30fps<TUjZ2o”•-–, 1920×1080 ‘%<’“5~10fps<TUjZ2o”—DE.AbstractJoint Collaborative Team on Video Coding (JCT-VC), which have founded ISO/IEC MPEG and ITU-T VCEG, has standardized High Efficiency Video Coding (HEVC). Standardization of HEVC has started with purpose of twice or more coding performance compared to H.264/AVC. However, flexible and hierarchical coding block and recursive coding structure are problems to overcome of HEVC standard. Many fast encoding algorithms for reducing computational complexity of HEVC encoder have been proposed. However, it is hard to implement a real-time HEVC encoder only with those fast encoding algorithms. In this paper, for implementation of software-based real-time HEVC encoder, data-level parallelism using SIMD instructions and CPU/GPU multi-threading methods are proposed. And we also proposed appropriate operations and functional modules to apply the proposed methods on HM 10.0 software. Evaluation of the proposed methods implemented on HM 10.0 software showed 20-30fps for 832×480 sequences and 5-10fps for 1920×1080 sequences, respectively. Keyword : HEVC, encoder, real-time, parallelization˜#xa(Regular Paper)™,š›xaGb18œb6U, 201311ž(JBE Vol. 18, No. 6, November 2013)http://dx.doi.org/10.5909/JBE.2013.18.6.835ISSN 2287-9137 (Online) ISSN 1226-7953 (Print)