#1123 closed defect (fixed)

Equation 1540 for initialization process for context variables in section 9.3.2.2

Reported by: T.Hashimoto Owned by:
Priority: minor Milestone: VVC D10
Component: spec Version: VVC D9 vB
Keywords: Cc: ksuehring, bbross, XiangLi, fbossen, jvet@…

Description

In Initialization process for context variables (section 9.3.2.2):

preCtxState = Clip3( 1, 127, ( ( m * ( Clip3( 0, 51, SliceQpY ) − 16 ) )  >>  1 ) + n )        (1540)

Because the maximum quantization parameter value is extended from 51 to 63 (JVET-K0251), above equation should be:

preCtxState = Clip3( 1, 127, ( ( m * ( Clip3( 0, 63, SliceQpY ) − 16 ) )  >>  1 ) + n )

It is noted that this text change was proposed in JVET-K0251, and VTM software seems to include the change.

Change history (2)

comment:1 Changed 15 months ago by bbross

  • Milestone set to VVC D10
  • Version set to VVC D9 vB

comment:2 Changed 15 months ago by bbross

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

This is fixed in JVET-S2001.

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