HEVC를 위한 고속 변환 크기 결정방법

다국어 초록 (Multilingual Abstract)

For the emerging High Efficiency Video Coding (HEVC) standard, a fast transform unit (TU) decision method is proposed. HEVC defines the TU representing a region sharing the same transformation, and it allows a residual block to be split into multiple TUs recursively to form a quadtree. By using the quadtree of TUs, HEVC supports various transform sizes from 4x4 to 32x32. The various sizes of TUs can provide a good coding efficiency, whereas this may increase encoding complexity dramatically. In the assumption that a TU with highly compacted energy is unlikely to be split, the proposed method determines TU sizes according to the position of the last non-zero transform coefficient. In the experimental results, the proposed method reduced 18% encoding run time with the negligible coding loss of 0.7% BD-rate for the Random_access case.

참고문헌 (Reference)

1 JCT-VC, "Transform unit quadtree" 2010

2 Gary J. Sullivan, "Overview of the High Efficiency Video Coding(HEVC)Standard" 22 (22): 1649-1668, 2012

3 Thomas Wiegand, "Overview of the H.264/AVC Video Coding Standard" 13 (13): 560-576, 2003

4 JCT-VC, "Mode Dependent Coefficient Scanning" 2011

5 박운기, "Large Block을 적용한 SVC 부호화 및 성능분석" 한국방송공학회 18 (18): 249-260, 2013

6 "High Efficiency Video Coding Test Model Software 7.0"

7 JCT-VC, "High Efficiency Video Coding (HEVC) text specification draft 10 (for FDIS & Consent)" 2013

8 JCT-VC, "High Efficiency Video Coding (HEVC) Test Model 11 (HM 11) Encoder Description" 2013

9 S.W. Teng, "Fast Mode Decision Algorithm for Residual Quadtree Coding in HEVC" 1-4, 2011

10 Xiaolin Shen, "Fast Coding Unit Size Selection for HEVC based on Bayesian Decision Rule" 453-456, 2012

11 JCT-VC, "Early Termination of CU Encoding to Reduce HEVC Complexity" 2011

12 K. Choi, "Early TU decision method for fast video encoding in high efficiency video coding" 48 : 689-691, 2012

13 JCT-VC, "Early SKIP Detection for HEVC" 2013

14 Joint Call for Proposals on Video Compression Technology, "Document VCEG-AM91 of ITU-T Q6/16 and N113 of JTC1/SC29/WG11"

15 JCT-VC, "Comparison of Compression Performance of HEVC Draft 9 with AVC High Profile and Performance of HM9.0 with Temporal Scalability Characteristics" 2013

16 JCT-VC, "Common HM test conditions and software reference configurations" 2012

17 JCT-VC, "Coding tree pruning based CU early termination" 2011

18 Sung-Ho Bae, "Assessments of Subjective Video Quality on HEVC-Encoded 4K-UHD Video for Beyond-HDTV Broadcasting Services" 59 (59): 209-222, 2013