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One-dimensional processing for efficient optimal post-process/in-loop filtering in video coding

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4 Author(s)
Akbulut, O. ; Dept. of Electron. & Telecommun. Eng., Kocaeli Univ., Kocaeli ; Urhan, O. ; Erturk, S. ; Tae-Gyu Chang

In this paper, efficient optimal post-process/inloop filtering in video coding is presented by applying two separate one-dimensional filters to significantly decrease the computational load of the optimal filtering process at the expense of only a slight quality loss. Furthermore, the compression of filter coefficients is evaluated using a Golomb-Rice (GR) coding approach together with differential encoding. Experimental results show that the proposed one dimensional processing approach reduces the computational complexity by at least 4 times compared to the formerly proposed two-dimensional optimal filtering case and enables real-time implementation. It is furthermore shown that, the filter coefficients can be compressed by up to 40% if GR coding is used together with differential encoding.

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Consumer Electronics, IEEE Transactions on  (Volume:54 ,  Issue: 3 )