摘要
根据AVC/H.264标准中提出的整数离散余弦变换(DCT)及其反变换(iDCT)算法,旨在给出一种能够同时实现4×4,8×8 DCT/IdCT和Hadamard变换的设计方法。设计中充分利用DCT和iDCT的相似性和算法对称性,用高度并行结构来加快处理速度。采用一维DCT/iDCT单元复用的方式实现二维DCT/iDCT运算,同时提出实现设计的全定制实现方法,对全定制实现此设计进行初步布局规划。
In this paper,according to the arithmetic of integer DCT/iDCT in AVC/H.264 international standard,a unified architecture is proposed for parallel 8×8 integer DCT and iDCT, it is also able to process 4×1 DCT, DCT and Hadamard transformation. The comparability between DCT and iDCT and the symmetry of their arithmetic have been utilized in this de sign,2-D DCT/iDCT is implemented using duplicated 1-D DCT/iDCTs. At the same time,some design methods of full cus- tom design are proposed to implement it.
出处
《现代电子技术》
2008年第4期121-123,125,共4页
Modern Electronics Technique
