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    Efficient Video Decoding on GPUs by Point Based Rendering

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    079-086.pdf (155.2Kb)
    Date
    2006
    Author
    Han, Bo
    Zhou, Bingfeng
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    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.
    BibTeX
    @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}
    }
    URI
    http://dx.doi.org/10.2312/EGGH/EGGH06/079-086
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