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학술지 Early Coding Unit-Splitting Termination Algorithm for High Efficiency Video Coding (HEVC)
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저자
Kalyan Goswami, 김병규, 전동산, 정순흥, 최진수
발행일
201406
출처
ETRI Journal, v.36 no.3, pp.407-417
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.14.0113.0458
협약과제
14MR9500, (통합)초고품질 콘텐츠 지원 UHD실감 방송/디지털 시네마/사이니지 융합서비스 기술 개발, 김진웅
초록
A new-generation video coding standard, named High Efficiency Video Coding (HEVC), has recently been developed by JCT-VC. This new standard provides a significant improvement in picture quality, especially for high-resolution videos. However, one the most important challenges in HEVC is time complexity. A quadtree-based structure is created for the encoding and decoding processes and the rate-distortion (RD) cost is calculated for all possible dimensions of coding units in the quadtree. This provides a high encoding quality, but also causes computational complexity. We focus on a reduction scheme of the computational complexity and propose a new approach that can terminate the quadtree-based structure early, based on the RD costs of the parent and current levels. Our proposed algorithm is compared with HEVC Test Model version 10.0 software and a previously proposed algorithm. Experimental results show that our algorithm provides a significant time reduction for encoding, with only a small loss in video quality. © 2014 ETRI.
키워드
Coding tree block, Coding unit, CU splitting, HEVC
KSP 제안 키워드
CU splitting, Coding Tree Block(CTB), Coding unit(CU), Computational complexity, Encoding and decoding, HEVC Test Model(HM), High-resolution, New approach, Picture quality, Rate-distortion (RD) cost, Time Complexity