Opened 6 years ago

Closed 6 years ago

Last modified 6 years ago

#1412 closed defect (fixed)

Typo in H.8.1.4 Derivation process for inter-layer reference pictures (in R1013_v6 and U1005_v2)

Reported by: Tomohiro Ikai Owned by:
Priority: trivial Milestone:
Component: Text Version:
Keywords: Cc: bbross, wjhan, jct-vc@…

Description

In H.8.1.4 Derivation process for inter-layer reference pictures,

cmPic is used as "
the picture sample resampling process as specified in clause H.8.1.4.1 is invoked with the picture sample arrays, cmPicSampleL, cmPicSampleCb and cmPicSampleCr, of the colour mapped direct reference layer picture cmPic as inputs, and with the resampled picture sample arrays, rsPicSampleL, rsPicSampleCb and rsPicSampleCr of the inter-layer reference picture ilRefPic as outputs."

But the cmPic seems not defined. On the other hand, cmRefPic is derived but not used. Maybe replacing cmPic with cmRefPic resolves this issue (or replacing cmRefPic with cmPic).

In addition, "If equalPictureSizeAndOffsetFlag is equal to 1, BitDepthRefLayerY is equal to BitDepthCurrY, BitDepthRefLayerC is equal to BitDepthCurrC, SubWidthRefLayerC is equal to SubWidthCurrC and SubHeightRefLayerC is equal to SubHeightCurrC, the following applies: ", how to generate ilRefPic is not so clear althogh rsPicSampleL, rsPicSampleCb and rsPicSampleCr are set (these parameters should be about ilRefPic).

Change History (2)

comment:1 Changed 6 years ago by jlchen

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

Yes, this is confirmed to be a typo. It can be sovled by "replacing cmPic with cmRefPic".

Regarding the second issue, it might be useful to add a note helping people better understand the generation process of inter-layer reference picture. We will try to work on it.

comment:2 Changed 6 years ago by Tomohiro Ikai

This report has been closed as fixed but the fix seems not reflrected in the latest suggested draft in JCTVC-V0031. When will this be refrected?

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