#945 closed defect (fixed)

Typo of slice_cc_alf_cr_enabled_flag, alf_ctb_cc_cr_idc and alf_ctb_flag

Reported by: wangyang.cs Owned by:
Priority: minor Milestone:
Component: spec Version: VVC D8 vB
Keywords: Cc: ksuehring, bbross, XiangLi, fbossen, jvet@…

Description

Suggest changes in JVET-Q2001-vD as follows:

slice_cc_alf_cr_enabled_flag equal to 0 specifies that the cross-component filter is not applied to the Cr colour component. slice_cc_alf_cb_enabled_flagslice_cc_alf_cr_enabled_flag equal to 1 indicates that the cross-component adaptive loop filter is enabled and may be applied to the Cr colour component. When slice_cc_alf_cr_enabled_flag is not present, it is inferred to be equal to ph_cc_alf_cr_enabled_flag.

alf_ctb_cc_cr_idc[ xCtb >> CtbLog2SizeY ][ yCtb >> CtbLog2SizeY ] equal to 0 specifies that the cross-component filter is not applied to the coding tree block of the Cr colour component at luma location ( xCtb, yCtb ). when alf_cc_cr_idc[ xCtb >> CtbLog2SizeY ][ yCtb >> CtbLog2SizeY ] not equal to 0, alf_cc_cb_idcalf_cc_cr_idc[ xCtb >> CtbLog2SizeY ][ yCtb >> CtbLog2SizeY ] − 1 specifies the filter set index of the cross-component filter applied to the coding tree block of the Cr colour component at luma location ( xCtb, yCtb ).

9.3.4.2.2 Derivation process of ctxInc using left and above syntax elements
...
– For the syntax elements alf_ctb_flag[ cIdx ][ xCtb ][ yCtb ][ cIdx ], alf_ctb_cc_cb_idc[ xCtb ][ yCtb ], alf_ctb_cc_cr_idc[ xCtb ][ yCtb ], split_qt_flag, split_cu_flag, cu_skip_flag[ x0 ][ y0 ], pred_mode_ibc_flag[ x0 ][ y0 ], intra_mip_flag[ x0 ][ y0 ], inter_affine_flag[ x0 ][ y0 ] and merge_subblock_flag[ x0 ][ y0 ]:

Table 132 – Specification of ctxInc using left and above syntax elements
alf_ctb_flag[ cIdx ][ xCtb ][ yCtb ][ cIdx ]
alf_ctb_flag[ cIdx ][ xCtbL ][ yCtbL ][ cIdx ]
alf_ctb_flag[ cIdx ][ xCtbA ][ yCtbA ][cIdx ]

Change history (1)

comment:1 Changed 17 months ago by yk

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

Good catches! Thanks! Will be fixed in R2001-v8.

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