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Using inter-frame dependence history to select intra-refresh blocks

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5 Author(s)
Zhao, C. ; Sch. of Comput. Eng., Nanyang Technol. Univ., Singapore ; Ngan, K.N. ; Zhang, J. ; Mathew, R.
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To prevent error propagation in predictive video coding, intra-refresh methods are often employed. Here, a new algorithm for macroblock intra-refresh that is based on pixel level inter-frame dependence history is proposed. This new method keeps track of the coding mode of every pixel and refreshes those macroblocks that contain pixels with a long history record. Simulation results show that the new algorithm performs better than the existing methods while maintaining the same bit rate.

Published in:

Electronics Letters  (Volume:38 ,  Issue: 22 )

Date of Publication:

24 Oct 2002

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