电子科技2017，Vol.30Issue(6)：43-45,49,4.DOI:10.16180/j.cnki.issn1007-7820.2017.06.012
基于8×8的整数DCT快速计算的H.264/AVC软件实现
Realization of H.264/AVC Software Based on 8 × 8 Integer DCT Fast Calculation
贾昆霖1
作者信息
- 1. 广东省惠州商贸旅游高级职业技术学校 培训中心,广东 惠州 516000
- 折叠
摘要
Abstract
The 4x4 and 8x8 integer discrete cosine transforms (DCTs) are adaptively used in the high distribution when adding the fidelity range extension (FRExt) modification to the H.264 Advanced Video Coding (AVC) standard, leading to even higher complexity of the already computation-intensive H.264 / AVC encoder.A new algorithm is proposed, by which the number of operations in the first stage calculation is reduced by reusing the generated integer DCT coefficients of the 4x4 blocks in 8x8 blocks.The results show that the computational complexity of the 8×8 integer DCT is reduced by more than 25% and the computation time is reduced by 22%.关键词
H.264标准/离散余弦变换/计算复杂度/软件实现Key words
H.264 standard/discrete cosine transform/computational complexity/software implementation分类
信息技术与安全科学引用本文复制引用
贾昆霖..基于8×8的整数DCT快速计算的H.264/AVC软件实现[J].电子科技,2017,30(6):43-45,49,4.
