Opened 9 years ago

Closed 9 years ago

#770 closed defect (fixed)

mismatch between WD and HM for context idx for 3rd bin of part_mode

Reported by: vsze Owned by: bbross
Priority: minor Milestone:
Component: Text Version: D8 (K0030) v3
Keywords: Cc: bbross, wjhan, jct-vc@…

Description

In HM-8.0, two different contexts are used for the binIdx=2 of part_mode:

m_cCUPartSizeSCModel.get( 0, 0, 2) when (cLog2CbSize = = Log2MinCbSizeY)&& (cLog2CbSize > 3).

or

m_cCUAMPSCModel.get( 0, 0, 0 )) when (cLog2CbSize >
Log2MinCbSizeY) && (amp_enable_flag)

In WD, same context is used for binIdx=2 of part_mode in both cases (Table 9-37)

Suggested correction:

Table 9-4 increase context range for part_mode to 0, 1..4, 5..8
Table 9-12 add missing contexts
Table 9-37 make ctxIdxInc of binIdx=2 of part_mode be 3 or 4 depending on (cLog2CbSize = = Log2MinCbSizeY)?

Change History (2)

comment:1 Changed 9 years ago by DefaultCC Plugin

  • Cc bbross wjhan jct-vc@… added

comment:2 Changed 9 years ago by bbross

  • Resolution set to fixed
  • Status changed from new to closed

A added an additional row in the ctx derivation table for part_mode because unfortunately (cLog2CbSize = = Log2MinCbSizeY) ? 2 : 3 is too wide to fit in the column of binIdx 2.

This will be fixed in JCVTC-K0030_v4.

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  • Benjamin Bross(Owner, Subscriber, Participant)
  • jct-vc@…(Subscriber)
  • karl.sharman@…(Always)
  • Karsten Suehring(Always)
  • Woo-Jin Han(Subscriber)