Opened 11 years ago

Closed 10 years ago

#1142 closed defect (fixed)

Inter RDPCM text description

Reported by: matteon Owned by:
Priority: major Milestone: RExt D5
Component: RExt text Version: RExt D4 (N1005) v3
Keywords: Cc: davidf, joel, teruhiko, jct-vc@…

Description

According to the meeting notes (JCTVC-N_Notes_dA), inter RDPCM (Test C.1 in Document JCTVC-N0074) for both lossy and lossless coding has been adopted. The current HEVC-RExt Draft 4 integrated the text but the following issues exist:

1) The parsing for the flags inter_rdpcm_flag and inter_rpdcm_dir_flag should be identical for both lossy and lossless coding. In the current version of the text both flags get parsed only for lossy coding.

2) The flags inter_rdpcm_flag and inter_rpdcm_dir_flag should be signalled for each TU and on a per component basis. In the current version of the text the component index cIdx is missing while parsing both flags.

3) Clause 8.6.5 ("8.6.5 Residual modification process for blocks using a transform bypass") should be invoked for both lossy and lossless coding in Section 8.5.4.3. Instead in the text is only invoked for lossy coding

4) Clause 8.6.5 is missing the TS scaling operated after residuals reconstruction for the lossy case.

The text changes for inter RDPCM are contained in Document JCTVC-N0074, namely JCTVC-N0074-text-changes-tu_r1.doc for lossless and JCTVC-N0074-text-changes-lossy_r1.doc for lossy coding.

Attachments (1)

JCTVC-N0074-text-changes-vs_N1005_v3.doc​ (94.0 KB) - added by matteon 11 years ago.

Download all attachments as: .zip

Change History (3)

comment:1 Changed 11 years ago by DefaultCC Plugin

  • Cc davidf joel teruhiko jct-vc@… added

Changed 11 years ago by matteon

comment:2 Changed 10 years ago by davidf

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

Fixed in O1005v1:

  • (1) added missing cu_transquant_bypass_flag condition
  • (2) added missing cIdx
  • (3) correct flag is now used (explicit_rdpcm_flag) for condition

No longer pertinent:

  • (4) Superseded by adoptions from Geneva meeting
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  • David Flynn(Subscriber, Participant)
  • jct-vc@…(Subscriber)
  • Joel(Subscriber)
  • karl.sharman@…(Always)
  • Karsten Suehring(Always)
  • Matteo Naccari(Reporter)
  • Teruhiko Suzuki(Subscriber)