Efficient Video Decoding on GPUs by Point Based Rendering

Han, Bo; Zhou, Bingfeng

Efficient Video Decoding on GPUs by Point Based Rendering

Files

079-086.pdf (155.28 KB)

Date

2006

Authors

Han, Bo
Zhou, Bingfeng

Publisher

The Eurographics Association

Abstract

To accelerate computation intensive video decoding tasks, we present a novel framework to offload most decoding operations to current GPUs. Our method is based on rendering graphics points and suitable for block-based video standards. By representing video blocks as graphics points, we achieve great flexibility and high parallelism to utilize the GPU s pipelined stream processing architecture. The computational resources within texture units and blending units are also exploited to facilitate computations. We propose a high performance implementation of IDCT on GPUs, which efficiently excludes most zero-value coefficients to save the bandwidth and the computations. Compared with the existing quad-based representation, our point based implementation of MC greatly reduces data transfer and redundancy. We have demonstrated the efficiency of our proposed framework by a MPEG-2 decoder. Our results indicate a significant improvement over prior CPU and GPU solutions.

        @inproceedings{:10.2312/EGGH/EGGH06/079-086
,
booktitle = {Graphics Hardware
},
editor = {Marc Olano and Philipp Slusallek
},
title = {{Efficient Video Decoding on GPUs by Point Based Rendering
}},
author = {Han, Bo and 
Zhou, Bingfeng
},
year = {2006
},
publisher = {The Eurographics Association
},
ISSN = {1727-3471
},
ISBN = {3-905673-37-1
},
DOI = {/10.2312/EGGH/EGGH06/079-086
}
}