Opened 11 years ago

Closed 10 years ago

#2 closed defect (fixed)

Control of inter-layer motion prediction and sample based prediction for SNR scalability

Reported by: Kenneth Owned by: jlchen
Priority: minor Milestone: Draft 7
Component: SHVC text and test model Version: Draft Text 3
Keywords: Cc: jlchen, yanye, jillboyce, jct-vc@…

Description

It seems that the SHVC specification is missing some information to specify the use of inter-layer motion prediction and sample based prediction for SNR scalability. There exists SamplePredEnabledFlag and MotionPredEnabledFlag that is used to control if resampling of the inter-layer reference picture or its motion field is performed when the resolution of the reference picture and the current picture is different but it does not specify anything specific for the case that the resolutions are identical.

It can be resolved by replacing following text in H.8.1.4

– rsPic is set equal to rlPic.

with

rsPic is derived as follows:
– The PicOrderCntVal value of rsPic is set equal to the PicOrderCntVal value of rlPic.
– When SamplePredEnabledFlag[ currLayerId ][ rLId ] is equal to 1, the rsPic is set equal to rlPic.
– When MotionPredEnabledFlag[ currLayerId ][ rLId ] is equal to 1, the motion field of rsPic is set equal to the motion field of rlPic.

Change history (3)

comment:1 Changed 11 years ago by DefaultCC Plugin

  • Cc jlchen yanye jillboyce jct-vc@… added

comment:2 Changed 11 years ago by jlchen

  • Milestone Draft Text 4 deleted

Milestone Draft Text 4 deleted

comment:3 Changed 10 years ago by jlchen

  • Milestone set to Draft 7
  • Resolution set to fixed
  • Status changed from new to closed

After discussion, the editing group think the current expression is neater and more consistent with the way for picture assignment that was done in version 1, therefore no action for this ticket.

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  • Gerhard Tech(Always)
  • jct-vc@…(Subscriber)
  • Jianle Chen(Owner, Subscriber, Participant)
  • Jill Boyce(Subscriber)
  • Karsten Suehring(Always)
  • Kenneth(Reporter)
  • yanye(Subscriber)