UN CO RR EC TE D PR OO F Adaptive Management of Video
نویسنده
چکیده
I n this paper, we investigate methods of reducing the computational complexity of the discrete cosine transform (DCT) in a software video encoder. The number of DCT calculations may be reduced by modeling the distribution of zero blocks. We demonstrate that the reduction in computational complexity is variable and depends on the statistics of the video sequence. We propose a new adaptive algorithm that can maintain a near-constant reduction in complexity. The proposed algorithm performs well at converging to a ‘‘target’’ computational complexity, at the expense of a small reduction in image quality. This algorithm provides a flexible mechanism for managing computational complexity in a video encoder.
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8 Article history: 9 Received 7 September 2009 10 Received in revised form 10 February 2010 11 Accepted 11 February 2010 12 Available online xxxx 1345 16
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تاریخ انتشار 2002