Opened 4 years ago

Closed 4 years ago

#769 closed enhancement (fixed)

Not matched names between pps_joint_cbcr_qp_offset_value in syntax table/semantics and pps_joint_cbcr_qp_offset in eq.(1124)

Reported by: tsukuba.takeshi Owned by:
Priority: trivial Milestone:
Component: spec Version:
Keywords: Cc: ksuehring, bbross, XiangLi, fbossen, jvet@…


In WD (JVET-P0041), pps_joint_cbcr_qp_offset_value is defined in PPS as below:

pps_joint_cbcr_qp_offset_value specifies the offset to the luma quantization parameter Qp′Y used for deriving Qp′CbCr. The value of pps_joint_cbcr_qp_offset_value shall be in the range of −12 to +12, inclusive. When ChromaArrayType is equal to 0 or sps_joint_cbcr_enabled_flag is equal to 0, pps_joint_cbcr_qp_offset_value is not used in the decoding process and decoders shall ignore its value. When pps_joint_cbcr_qp_offset_present_flag is equal to 0, pps_joint_cbcr_qp_offset_value is not present and is inferred to be equal to 0.

On the other hand, pps_joint_cbcr_qp_offset is used in eq.(1124) in sec.8.7.1 as below:

Qp′CbCr = Clip3( −QpBdOffset, 63, qPCbCr + pps_joint_cbcr_qp_offset +

slice_joint_cbcr_qp_offset +CuQpOffsetCbCr ) + QpBdOffset (1124)

For minimum change, pps_joint_cbcr_qp_offset should be replaced with pps_joint_cbcr_qp_offset_value.
pps_joint_cbcr_qp_offset_value in syntax table and semantics should be replced with pps_joint_cbcr_qp_offset.

Change history (1)

comment:1 Changed 4 years ago by bbross

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

Thanks for reporting!

This has been fixed in JVET-Q2001-v5.

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