The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
컨텍스트 기반 적응형 가변 길이 코딩(CAVLC)은 변환 계수 압축을 위해 H.264/AVC에서 사용되는 엔트로피 코딩 방식입니다. CAVLC는 264이 아닌 계수의 수준을 인코딩합니다. 그런 다음 스캔 순서에서 4.40이 아닌 각 계수 앞에 264의 개수인 run_before를 사용하여 해당 위치를 나타냅니다. H.0.52에서 run_before는 코딩되지 않은 XNUMX 값 계수의 수에 따라 조회 테이블을 사용하여 코딩됩니다. 본 논문에서는 XNUMX 값과 XNUMX이 아닌 계수를 모두 고려한 테이블을 사용하여 run_before를 인코딩하는 개선된 run_before 코딩 방법을 제시합니다. 시뮬레이션 결과는 제안된 방법이 인트라-온리 코딩 구조를 갖는 H.XNUMX 기준 프로파일에 비해 run_before 코딩에 대해 평균 XNUMX%의 비트 전송률 감소를 가져온다는 것을 보고합니다. 이는 평균적으로 전체 비트레이트 대비 XNUMX%의 비트레이트 절약에 해당합니다.
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부
Jie JIA, Daeil YOON, Hae Kwang KIM, "An Improved Run_before Coding for H.264 CAVLC" in IEICE TRANSACTIONS on Fundamentals,
vol. E93-A, no. 2, pp. 561-564, February 2010, doi: 10.1587/transfun.E93.A.561.
Abstract: Context-based adaptive variable length coding (CAVLC) is an entropy coding scheme employed in H.264/AVC for transform coefficient compression. The CAVLC encodes levels of nonzero-valued coefficients. Then indicates their positions with run_before which is number of zeros preceding each nonzero coefficient in scan order. In H.264, the run_before is coded using lookup tables depending on number of zero-valued coefficients that have not been coded. This paper presents an improved run_before coding method which encodes run_before using tables taking both zero-valued and nonzero-valued coefficients into consideration. Simulation results report that the proposed method yields an average of 4.40% bit rate reduction for run_before coding over H.264 baseline profile with intra-only coding structure. It corresponds to 0.52% bit rate saving over total bit rate on average.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E93.A.561/_p
부
@ARTICLE{e93-a_2_561,
author={Jie JIA, Daeil YOON, Hae Kwang KIM, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={An Improved Run_before Coding for H.264 CAVLC},
year={2010},
volume={E93-A},
number={2},
pages={561-564},
abstract={Context-based adaptive variable length coding (CAVLC) is an entropy coding scheme employed in H.264/AVC for transform coefficient compression. The CAVLC encodes levels of nonzero-valued coefficients. Then indicates their positions with run_before which is number of zeros preceding each nonzero coefficient in scan order. In H.264, the run_before is coded using lookup tables depending on number of zero-valued coefficients that have not been coded. This paper presents an improved run_before coding method which encodes run_before using tables taking both zero-valued and nonzero-valued coefficients into consideration. Simulation results report that the proposed method yields an average of 4.40% bit rate reduction for run_before coding over H.264 baseline profile with intra-only coding structure. It corresponds to 0.52% bit rate saving over total bit rate on average.},
keywords={},
doi={10.1587/transfun.E93.A.561},
ISSN={1745-1337},
month={February},}
부
TY - JOUR
TI - An Improved Run_before Coding for H.264 CAVLC
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 561
EP - 564
AU - Jie JIA
AU - Daeil YOON
AU - Hae Kwang KIM
PY - 2010
DO - 10.1587/transfun.E93.A.561
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E93-A
IS - 2
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - February 2010
AB - Context-based adaptive variable length coding (CAVLC) is an entropy coding scheme employed in H.264/AVC for transform coefficient compression. The CAVLC encodes levels of nonzero-valued coefficients. Then indicates their positions with run_before which is number of zeros preceding each nonzero coefficient in scan order. In H.264, the run_before is coded using lookup tables depending on number of zero-valued coefficients that have not been coded. This paper presents an improved run_before coding method which encodes run_before using tables taking both zero-valued and nonzero-valued coefficients into consideration. Simulation results report that the proposed method yields an average of 4.40% bit rate reduction for run_before coding over H.264 baseline profile with intra-only coding structure. It corresponds to 0.52% bit rate saving over total bit rate on average.
ER -