High level syntax improvement on inter-layer prediction for shvc/mv-hevc

Abstract

Syntax changes for SHVC/MV-HEVC coding apparatus and methods are described which improve efficiency. In a first portion, syntax of header signaling position under P or B-slice conditions are described, and a new condition to signal inter-layer prediction layer. A second portion describes use of an inter-layer reference picture set as an alternative to the first portion, and provides an arranged syntax to more efficiently signal inter-layer reference information. In a third portion, an inter-layer sample only prediction and TMVP interaction is described which reduces signaling needs for collocated references syntax.

1 - 20 . (canceled) 
     
     
         21 . A video coding apparatus, comprising:
 at least one processor configured to:
 execute an inter-layer prediction for one of a P-type slice or a B-type slice, based on an inter_layer_sample_pred_only_flag; 
 use a slice_temporal_mvp_enabled_flag without a temporal motion vector prediction (TMVP) for a current picture, as a condition that reference picture lists of all slices in the current picture include only inter-layer reference pictures; and 
 skip each of a syntax associated with the TMVP. 
   
     
     
         22 . The video coding apparatus recited in  claim 21 , wherein the at least one processor is further configured to execute the TMVP for the current picture based on the slice_temporal_mvp_enabled_flag that is set to zero. 
     
     
         23 . The video coding apparatus recited in  claim 21 , wherein the at least one processor is further configured to skip an operation associated with the TMVP as a condition that the inter_layer_sample_pred_only_flag is set to true. 
     
     
         24 . A video coding method, comprising:
 in a video coding apparatus:
 executing an inter-layer prediction for one of a P-type slice or a B-type slice, based on an inter_layer_sample_pred_only_flag; 
 using a slice_temporal_mvp_enabled_flag without a temporal motion vector prediction (TMVP) for a current picture, as a condition that reference picture lists of all slices in the current picture include only inter-layer reference pictures; and 
 skipping each of a syntax associated with the TMVP. 
   
     
     
         25 . The video coding method recited in  claim 24 , further comprising executing the TMVP for the current picture based on the slice_temporal_mvp_enabled_flag that is set to zero. 
     
     
         26 . The video coding method recited in  claim 24 , further comprising skipping an operation associated with the TMVP as a condition that the inter_layer_sample_pred_only_flag is set to true.