Opened 7 years ago

Closed 7 years ago

#1294 closed defect (fixed)

444, derivation of scanIdx and predModeIntra, mismatch between specification and software

Reported by: dominik.wojt Owned by:
Priority: major Milestone: RExt D7
Component: RExt text Version: RExt D7 (Q1005) v6
Keywords: Cc: davidf, joel, teruhiko, jct-vc@…

Description

In section 7.4.9.11, "Residual coding semantics" in derivation of scanIdx the following condition:

- If CuPredMode[ x0 ][ y0 ] is equal to MODE_INTRA and one or more of the following conditions are true:
    - log2TrafoSize is equal to 2.
    - log2TrafoSize is equal to 3 and cIdx is equal to 0.

differs from the one in reference software HM-14.0+RExt-7.2, when chromaArrayType is 3, log2TrafoSize is 3, and cIdx is different from 0. Condition in specification gives false, while condition in software gives true.
Following change should fix the issue:

- If CuPredMode[ x0 ][ y0 ] is equal to MODE_INTRA and one or more of the following conditions are true:
    - log2TrafoSize is equal to 2.
    - log2TrafoSize is equal to 3 and cIdx is equal to 0.
    - log2TrafoSize is equal to 3 and chromaArrayType is equal to 3.

Change History (2)

comment:1 Changed 7 years ago by DefaultCC Plugin

  • Cc davidf joel teruhiko jct-vc@… added

comment:2 Changed 7 years ago by davidf

  • Milestone set to RExt D7
  • Resolution set to fixed
  • Status changed from new to closed

Fixed in Q1005_v8

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  • David Flynn(Subscriber, Participant)
  • Dominik Wójt(Reporter)
  • jct-vc@…(Subscriber)
  • Joel(Subscriber)
  • karl.sharman@…(Always)
  • Karsten Suehring(Always)
  • Teruhiko Suzuki(Subscriber)