Opened 11 years ago

Closed 11 years ago

#900 closed defect (fixed)

HM/WD mismatch when parsing sao_merge_left/up in dependent slices

Reported by: rbertin Owned by: bbross
Priority: minor Milestone:
Component: Text Version: D9 (K1003) v11
Keywords: Cc: bbross, wjhan, jct-vc@…

Description

In SAO syntax : "7.3.9.3 Sample adaptive offset syntax"

The sao_merge_left and sao_merge_up flag are decoded depending on the following conditions :

CtbAddrInSliceSeg = CtbAddrInRS − slice_segment_address
(...)
leftCtbInSliceSeg = CtbAddrInSliceSeg > 0
(...)
upCtbInSliceSeg = ( CtbAddrInRS − PicWidthInCtbsY ) >= slice_segment_address

The Syntax Element slice_segment_address refers to the current slice segment, which may be dependent OR independent.

On the contrary, in HM software, this is applied only to independant slice segments, and sao_merge_up/left flags are allowed on dependent slice boundaries.

In the previous quoted text, I suggest to replace the variable "slice_segment_address" by "SliceAddrRS"

Attachments (1)

fixSAOdependent.doc​ (44.5 KB) - added by rbertin 11 years ago.

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Change History (3)

comment:1 Changed 11 years ago by DefaultCC Plugin

  • Cc bbross wjhan jct-vc@… added

Changed 11 years ago by rbertin

comment:2 Changed 11 years ago by bbross

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

Fixed in JCTVC-L0030_v3.

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  • Benjamin Bross(Owner, Subscriber, Participant)
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  • Karsten Suehring(Always)
  • Remi Bertin(Reporter)
  • Woo-Jin Han(Subscriber)