The Joint Collaborative Team on Video Coding (jct-vc) of itu-t wp3/16 and iso/iec jtc 1/sc 29/wg 11 held its second meeting during 21-28 July, 2010 at the itu-t premises in Geneva, ch

JCTVC-B064 [T. Ikai, T. Yamamoto, Y. Kitaura (Sharp)] A parallel adaptive loop filter

This contribution is related to the In-loop filtering ad hoc group. In this contribution an adaptive Wiener-based filter technique was proposed. The proposed technique uses two inputs: the de-blocking filtered reconstruction signal and the unfiltered reconstruction signal. The proposed technique also provides the functionality to process the two inputs in parallel. The reported experiment results indicate that the proposed technique provides 1.2% bitrate reduction (equivalently 0.04 dB gain) on average over all test conditions (CS1 and CS2) , compared with QALF.

The primary motivation is to enable parallel filtering processing.

Question: Does the parallel structure let blocking artifacts bypass the deblocking filter.

Comment: If the filtering operates on a block basis, it can be structured for spatially parallel processing.

Question: How to derive the weight factor? Used Wiener filter approach.