In this paper, a quick table look-up optimization algorithm is presented to solve the problems of long table look-up time for CAVLC decoding in H.264/AVC. The achievement of the new algorithm rests that we make full use of the hash table query and index technology to improve the table look-up speed for CAVLC decoding. The basic idea of the new algorithm is that we take the number of zero in code prefix calculated from input bit-stream as index key of the first level, the value of codeword suffix as index key of the second level, then through index key of the one and second index key above, we can quickly get the decoded codeword located in the third level in a hash table built, which can reduce a lot of table look-up time for CAVLC decoding in H.264/AVC. The simulation results show that our proposed schemes based on hash-index method can reduce about 40% table look up time for CAVLC decoding compared with TLSS method, without degrading video quality.
목차
Abstract 1. Introduction 2. The Principle and Common Optimization Method of CAVLC Decoding 2.1. Principle of CAVLC Decoding 2.2. Common Optimization Method of CAVLC Decoding 3. Proposed Scheme 3.1. Observe Variable Length Tables 3.2. Find Internal Relationship between Code Length and Numbers of 0 in Code Prefix 3.3. Build Hash-index Table 3.4. Realize Tables Look-up Algorithm based on Hash-index Query 3.5. Demonstrate Method Instance 3. Simulation Results and Analysis 4.1. Simulation Environment 4.2. Reduce Table Look-up Time 5. Conclusion Acknowledgements References
키워드
CAVLC decodingTable look-upHash-index query
저자
Jianhua Wang [ Faculty of Automation, Guangdong University of Technology, Guangzhou, China ]
Lianglun Cheng [ Faculty of Automation, Guangdong University of Technology, Guangzhou, China ]
Jun Liu [ Faculty of Automation, Guangdong University of Technology, Guangzhou, China ]
Tao Wang [ Faculty of Automation, Guangdong University of Technology, Guangzhou, China ]
보안공학연구지원센터(IJSIP) [Science & Engineering Research Support Center, Republic of Korea(IJSIP)]
설립연도
2006
분야
공학>컴퓨터학
소개
1. 보안공학에 대한 각종 조사 및 연구
2. 보안공학에 대한 응용기술 연구 및 발표
3. 보안공학에 관한 각종 학술 발표회 및 전시회 개최
4. 보안공학 기술의 상호 협조 및 정보교환
5. 보안공학에 관한 표준화 사업 및 규격의 제정
6. 보안공학에 관한 산학연 협동의 증진
7. 국제적 학술 교류 및 기술 협력
8. 보안공학에 관한 논문지 발간
9. 기타 본 회 목적 달성에 필요한 사업
간행물
간행물명
International Journal of Signal Processing, Image Processing and Pattern Recognition
간기
격월간
pISSN
2005-4254
수록기간
2008~2016
십진분류
KDC 505DDC 605
이 권호 내 다른 논문 / International Journal of Signal Processing, Image Processing and Pattern Recognition Vol.7 No.3