An Optimized Parallel IDCT on Graphics Processing Units

被引：0
|
作者：
Wang, Biao [1 ]
Alvarez-Mesa, Mauricio [1 ]
Chi, Chi Ching [1 ]
Juurlink, Ben [1 ]
机构：
[1] Tech Univ Berlin, Berlin, Germany
来源：
EURO-PAR 2012: PARALLEL PROCESSING WORKSHOPS | 2013年 / 7640卷
关键词：
IDCT; GPU; H.264; OpenCL; parallel programming;
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：
In this paper we present an implementation of the H.264/AVC Inverse Discrete Cosine Transform (IDCT) optimized for Graphics Processing Units (GPUs) using OpenCL. By exploiting that most of the input data of the IDCT for real videos are zero valued coefficients a new compacted data representation is created that allows for several optimizations. Experimental evaluations conducted on different GPUs show average speedups from 1.7x to 7.4x compared to an optimized single-threaded SIMD CPU version.
引用
收藏
页码：155 / 164
页数：10
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