基于“龙芯”SIMD技术的RealVideo去块滤波优化  

Optimization of RealVideo deblocking filter based on SIMD technology for Loongson

作　　者：吴少刚[1] 刘波[1] 

机构地区：[1]中国石油大学(华东)计算机与通信工程学院,山东东营257061

出　　处：《计算机工程与设计》2009年第3期529-531,599,共4页Computer Engineering and Design

基　　金：国家863高技术研究发展计划基金项目(2006AA010201);江苏省科技成果转化基金项目(BA2004029)

摘　　要：介绍了RealVideo解码中去块效应滤波器的滤波过程,对滤波器的复杂度进行了分析,并在"龙芯"平台下利用多媒体指令进行了优化。实验结果表明,RealVideo解码器中的去块滤波有效地提高了图像的主、客观质量,基于多媒体指令的优化技术较好地解决了多媒体数据处理的并行性问题,减少了滤波耗时,提高了"龙芯"平台下RealVideo文件的播放能力。How the debloking filter works in the process of RealVideo decoding is introduced. The filter＇ s complexity is analyzed and the filter is optimized by using the multimedia instruction on Loongson platform. The result show that the debloking filter in RealVideo decoding has efficiently improved the image quality both in subjectivity and impersonality. With optimization of the multimedia instruction the filter resolved the time-consuming problem in filtering and enhanced the power of playing RealVideo files on Loongson platform.

关 键 词：REALVIDEO 去块滤波 龙芯 SIMD 多媒体指令 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]