Video Coding on Multicore Graphics Processors

Author

Cheung, Ngai-Man ; Fan, Xiaopeng ; Au, Oscar C. ; Kung, Man-Cheung

Author_Institution

Inf. Syst. Lab., Stanford Univ., Stanford, CA, USA

Volume

27

Issue

2

fYear

2010

fDate

3/1/2010 12:00:00 AM

Firstpage

79

Lastpage

89

Abstract

In this article, we investigate using multi-core graphics processing units (GPUs) for video encoding and decoding. After an overview of video coding and GPUs, we review some previous work on structuring video coding modules so that the massive parallel processing capability of GPUs can be harnessed. We also review previous work on partitioning the video decoding flow between the central processing unit (CPU) and GPU. After that, we discuss in detail a GPU based fast motion estimation to illustrate some design considerations in using GPUs for video coding, and the tradeoff between speedup and rate-distortion performance. Our results highlight the importance to expose as much data parallelism as possible in designing algorithms for GPUs.

Keywords

computer graphic equipment; coprocessors; motion estimation; video coding; GPU based fast motion estimation; central processing unit; multicore graphics processing units; multicore graphics processors; parallel processing capability; video coding; video decoding; video encoding; Algorithm design and analysis; Central Processing Unit; Decoding; Encoding; Graphics; Motion estimation; Multicore processing; Parallel processing; Rate-distortion; Video coding;

fLanguage

English

Journal_Title

Signal Processing Magazine, IEEE

Publisher

ieee

ISSN

1053-5888

Type

jour

DOI

10.1109/MSP.2009.935416

Filename

5438981