A modified IDCT and a new strategy for motion compensation based on VLIW

被引：0

作者：

Ouyang, WL ^{[1
]}

Xiao, CB ^{[1
]}

Quan, XM ^{[1
]}

Liu, G ^{[1
]}

Ju, WQ ^{[1
]}

Song, DD ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Comp Sci & Technol, Beijing 100022, Peoples R China

来源：

Proceedings of the 8th Joint Conference on Information Sciences, Vols 1-3 | 2005年

关键词：

very long instruction word (VLIW); discrete cosine transform (DCT); IDCT; fast algorithm; parallel algorithm; motion compensation; video compression; DISCRETE COSINE TRANSFORM; ALGORITHM;

D O I：

暂无

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

In this paper, the matrix decomposition of existing DCT algorithms is presented. Using a Very Long Instruction Word (VLIW) architectural view, existing state of the art algorithms are compared with an algorithm that is tailored for DCT. VLIW operation is further utilized to design a modified IDCT algorithm. Compared with existing algorithms, the new algorithm reduces the number of instruction cycles needed. In addition, we use the register character of VLIW for merging motion compensation (MC) with IDCT (DCT) in the video codec. This reduces the number of cycles required for MC to about 50% of the number required for the unimproved one. The approach is applicable to MPEG1/2/4, H.263 and H.264/AVC.

引用

页码：1747 / 1751

页数：5

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