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Utilization of low-complexity and drift-reduction architecture in downscaling transcoder

[+] Author Affiliations
Tsung-Han Tsai

National Central University, Department of Electrical Engineering, Taiwan

Hsueh-Yi Lin

National Central University, Department of Electrical Engineering, Taiwan

J. Electron. Imaging. 18(3), 033006 (August 07, 2009). doi:10.1117/1.3196765
History: Received October 05, 2008; Revised June 17, 2009; Accepted June 18, 2009; Published August 07, 2009
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Downscaling between various video sizes is an important field in transcoding, especially in the era of communication and consumer electronics. Architectures are proposed to offer the best strategy in downscaling. We combine an intra refresh mechanism with a partial encode architecture. A new intra refresh decision mechanism is then proposed based on visual quality constraint. Not only does the work improve transcoded video quality, but overall complexity is also kept low. The experiment results show that the proposed work achieves a 0.5to2.5-dB advance in quality, compared with intra refresh in the open loop and partial encode architectures.

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Citation

Tsung-Han Tsai and Hsueh-Yi Lin
"Utilization of low-complexity and drift-reduction architecture in downscaling transcoder", J. Electron. Imaging. 18(3), 033006 (August 07, 2009). ; http://dx.doi.org/10.1117/1.3196765


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