Opened 10 years ago Closed 10 years ago #882 closed defect (fixed)deblocking of 4x4 chroma CBs speficied incorrectly
Description
In HM9.0, if the topleft 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 10 years ago by DefaultCC Plugin
comment:2 Changed 10 years ago by bbross
comment:3 Changed 10 years ago by bbross
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Fixed in JCTVCL1003_v1.