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 tenth meeting during 11-20 July 2012 at the City Conference Centre (ccc), a k. a

JCTVC-J0387 AHG6/AHG5: Cross-check of JCTVC-J0106 (SAO offset coding) [T. Yamakage, T. Itoh (TOSHIBA)] [late]
The following documents were discussed in track B, after grouping had been performed in the BoG

JCTVC-J0141 AhG6: SAO Offset Bypass Coding [W.-S. Kim, M. Budagavi, V. Sze (TI)]

Two modifications are suggested. In both cases 2 bins of SAO magnitudes are encoded with ctx. For remaining bins by-pass is used. No reduction for the number of context models. As results 88% reduction of ctx coded SAO bins is achieved for the worst case. Additionally in second solution the combination of TU and fixed length coding is proposed. As result total amount of SAO bins is reduced 53%.In both solutions the order of syntax elements coding was changed in order to combine ctx coded and by-passed bins. Number of changed in s/w and specification is higher compare to J0106.

Performance:

• 
  Solution 1: 0.0%(Y); 0.0%(U), 0.0%(V)
  
• 
  Solution 2: 0.1%(Y); 0.4%(U), 0.4%(V) (BD-rate drop)
  

nNo action – other proposals e.g. JCTVC-J0043 provides better simplification.

JCTVC-J0317 Cross-Check of proposal J0141 of TI (AhG6: SAO Offset Bypass Coding) [C. Kim (Samsung)] [late]

The amount of specification and s/w changes doesn’t justify benefits J0141 provides.