Opened 9 years ago

Closed 9 years ago

#882 closed defect (fixed)

deblocking of 4x4 chroma CBs speficied incorrectly

Reported by: stefane Owned by: bbross
Priority: minor Milestone: D9
Component: Text Version: D9 (K1003) v11
Keywords: Cc: bbross, wjhan, jct-vc@…

Description

In HM-9.0, if the top-left corner of a chroma coding block of size 4x4 is aligned to a chroma location that is not a multiple of 8 in horizontal or vertical direction, the deblocking filter process is not applied to its left or top edge, respectively.

If that is the intended behavior, the text has to be modified. One possible solution would be to change:

In 8.7.2.4.1 Vertical edge filtering process:

– When bS[ xDk*2 ][ yDm*2 ] is greater than 1 and (( xDk >> 3 ) << 3) is equal to xDk, the following ordered steps apply.

to

– When bS[ xDk*2 ][ yDm*2 ] is greater than 1 and (( ( xC / 2 + xDk ) >> 3 ) << 3) is equal to xC / 2 + xDk, the following ordered steps apply.

and in 8.7.2.4.2 Horizontal edge filtering process:

– When bS[ xDk*2 ][ yDm*2 ] is greater than 1 and (( yDm >> 3 ) << 3) is equal to yDm, the following ordered steps apply.

to

– When bS[ xDk*2 ][ yDm*2 ] is greater than 1 and (( ( yC / 2 + yDm ) >> 3 ) << 3) is equal to yC / 2 + yDm, the following ordered steps apply.

Change History (3)

comment:1 Changed 9 years ago by DefaultCC Plugin

  • Cc bbross wjhan jct-vc@… added

comment:2 Changed 9 years ago by bbross

  • Version changed from D9 (K1003) v10 to D9 (K1003) v11

comment:3 Changed 9 years ago by bbross

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

Fixed in JCTVC-L1003_v1.

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These roles will be notified: Reporter, Owner, Subscriber, Participant

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