Data compression and the 8z8 integer transform

摘要：

Data compression is a kind of power concentrating process.Complex data could be transferred into eigenvalues and sparse data concentrated directly.DCT is a very efficient transform but hard to implement.8x8 integer transform derived here is easily mapping into a parallel accelerating system,and proved to earn a better performance than existing 4x4 ones. This work implemented 8x8 integer algorithm on the REmus system,a novel reconfigurable system designed by Tsinghua,verified the architecture with several media applications. A 46.0% speedup comparing with 4x4 integer ones and a 60.1% average boost comparing with other processors are achieved Different dividing of frames also has an impact on other algorithms,such as deblocking,the most significant process in h264 codec.It gets 62.5% boost,too. Comparing with 4x4 ones,when quantity level is smaller than 10,8x8 restores better pictures and a 10% improvement is always found on compress ratios.

关键词： 8z8 integer transform DCT power transform reconfigurable system

作者: Min Zhu Wen Jia Leibo Liu Shaojun Wei

作者单位: Tsinghua National Laboratory for Information Science and Technology and the Institute of microelectr Tsinghua National Laboratory for Information Science and Technology and the Institute of microeleetr

会议类型: 国际会议

会议名称: 2009 IEEE 8th International Conference on ASIC(第八届IEEE国际专用集成电路大会)

会议地点: 长沙

会议语种:英文

页码: 902-905

在线出版日期: 2009-10-20（万方平台首次上网日期，不代表论文的发表时间）