Opened 3 years ago

Last modified 3 years ago

#1319 new defect

Superfluous condition on residualDpcm in intra blocks

Reported by: jackh Owned by:
Priority: minor Milestone: RExt D7
Component: RExt text Version: RExt D7 (Q1005) v8
Keywords: Cc: davidf, joel, teruhiko, jct-vc@…

Description

In section 8.4.4.1 of Q1005 v9, it says:

The variable residualDpcm is derived as follows:
If all of the following conditions are true, residualDpcm is set equal to 1.

– implicit_rdpcm_enabled_flag is equal to 1.
– either transform_skip_flag[ xTbY ][ yTbY + yTbOffsetY ][ cIdx ] is equal to 1, or cu_transquant_bypass_flag is equal to 1.
– either predModeIntra is equal to 10, or predModeIntra is equal to 26.

Otherwise, residualDpcm is set equal to explicit_rdpcm_flag[ xTbY ][ yTbY + yTbOffsetY ][ cIdx ].

However, looking at the residual_coding syntax structure, it doesn't seem possible that explicit_rdpcm_flag could be set for an intra block, so perhaps the last part of the condition should be:

Otherwise, residualDpcm is set equal to 0.

Change History (1)

comment:1 Changed 3 years ago by DefaultCC Plugin

  • Cc davidf joel teruhiko jct-vc@… added
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