An efficient architecture of binary motion estimation for MPEG-4 shape coding

被引:0
作者
Wang, YC [1 ]
Chang, HC [1 ]
Chao, WM [1 ]
Chen, LG [1 ]
机构
[1] Natl Taiwan Univ, Dept Elect Engn, DSPIC Design Lab, Taipei 10764, Taiwan
来源
VISUAL COMMUNICATIONS AND IMAGE PROCESSING 2001 | 2001年 / 4310卷
关键词
motion estimation; shape coding; MPEG-4; architecture;
D O I
暂无
中图分类号
TP31 [计算机软件];
学科分类号
081202 ; 0835 ;
摘要
This paper presents an efficient architecture of binary motion estimation (BME) for MPEG-4 shape coding. This architecture, called DDBME, mainly consists of a data dispatch based 1-D systolic array and a 16x32 bit search range buffer. In DDBME, bit parallelism technique is applied on the SAD calculation of block matching algorithm. In order to support efficiently bit-data parallel processing, bit addressing should be taken into consideration. The data dispatch technique is applied on 1-D array by the hardwired data flow routing such that the bit addressing operations can be efficiently reduced. The DDBME operating at 7.29 MHz can handle the real-time requirement for encoding MPEG-4 shape sequence at core profile level 2, i.e. 2 VOs with CIF format, 30 fps and assuming each frame contains 30% boundary macroblocks in average. For the same real-time specification, the optimized software running on RISC (Ultra Spare, 300MHz) can only achieve 1/20 performance.
引用
收藏
页码:959 / 967
页数:9
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