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

5.9.2.4SAO magnitudes

An order of SAO syntax elements (with already agreed changes):

• 
  SAO merge left (ctx)
  
• 
  SAO merge up (ctx)
  
• 
  SAO on/off flag (ctx)
  
• 
  ---------------------------------
  
• 
  SAO type (ctx or by-pass)
  
• 
  SAO magnitudes (by-pass)
  
• 
  SAO signs (by-pass)
  
• 
  SAO left band position (by-pass)
  

JCTVC-J0043 AhG5: On bypass coding for SAO syntax elements [E. Alshina, A. Alshin, J.H. Park (Samsung)]

SAO magnitude is encoded with by-pass, 0,0% (Y), 0,2% (U) 0,1%(V). 2 ctxs removed from HEVC design. The number of ctx coded bins in worst case reduced 94%. Statistically 0,3% reduction of ctx coded bins in HM7.0. No reduction for total bins number in the worst case.

Recommendation of BoG: adopt J0043 (use by-pass coding for all bins of SAO magnitude).

Decision: Adopt.