Inter-view prediction

Patent metadata

Field	Value
Publication number	US-10313702-B2
Application number	US-45103408-A
Country	US
Kind code	B2
Filing date	Apr 23, 2008
Priority date	Apr 25, 2007
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

Abstract

At least one disclosed method and apparatus relate to inter-view prediction with different resolution reference picture. A particular method includes accessing at least a portion of an encoded picture ( 614 ), the encoded picture being from a particular view of multiple views, and the portion being encoded at a particular resolution. The method further includes determining a particular view level based on the particular view ( 614 ), determining the particular resolution based on the particular view level ( 606 ), and decoding the portion based on the particular resolution ( 630 ).

First claim

The invention claimed is:

1. A method, comprising:
accessing at least a portion of an encoded picture, the encoded picture being from a particular view of multiple views, and the portion being encoded at a resolution;
determining the resolution of the particular view for at least the portion from information identifying an assigned view level and a resolution corresponding to the view level; and
decoding at least the portion based on the determined resolution,
wherein the determining comprises identifying the resolution for the particular view based on a position of the view level in a scalability hierarchy, the position being indicated by a particular view level and the scalability hierarchy provides scalability at least by allowing that pictures from a given position in the scalability hierarchy to be used as an inter-view reference for pictures from a less important position in the scalability hierarchy and not to be used as a reference for pictures from a more important position in the scalability hierarchy, and resolution for a picture from a given position in the scalability hierarchy being as good as resolution for a picture from a less important position in the scalability hierarchy, and wherein inter-view reference pictures are downsampled from a higher resolution picture before being used as a reference for pictures from a less important position in the scalability hierarchy.

2. The method of claim 1 , wherein:
resolution for a picture from a given position in the scalability hierarchy is at least as good as resolution for a picture from a less important position in the scalability hierarchy.

3. The method of claim 1 , wherein the determining of the particular resolution comprises:
accessing an indicator from the information that indicates a view level position in a scalability hierarchy for the particular view; and
determining the particular resolution based on the view level position in the scalability hierarchy.

4. The method of claim 3 , wherein the encoded picture and the indicator are accessed from data formatted according to a particular video coding standard.

5. The method of claim 1 , further comprising:
accessing multiple encoded pictures, the multiple encoded pictures being from the particular view and being encoded at the particular resolution; and
decoding the multiple encoded pictures based on the particular resolution.

6. The method of claim 5 , wherein the multiple encoded pictures belong to one or more of a group of pictures, a scene, or a movie.

7. An apparatus, comprising:
a memory, and
a processor, configured to:
access at least a portion of an encoded picture, the encoded picture being from a particular view of multiple views, and the portion being encoded at a resolution;
determine the resolution of the particular view for at least the portion from information identifying an assigned view level and a resolution corresponding to the view level; and
decode at least the portion based on the determined resolution,
wherein the determining comprises identifying the resolution for the particular view based on a position of the view level in a scalability hierarchy, the position being indicated by a particular view level and the scalability hierarchy provides scalability at least by allowing that pictures from a given position in the scalability hierarchy to be used as an inter-view reference for pictures from a less important position in the scalability hierarchy and not to be used as a reference for pictures from a more important position in the scalability hierarchy, and resolution for a picture from a given position in the scalability hierarchy being as good as resolution for a picture from a less important position in the scalability hierarchy, and wherein inter-view reference pictures are downsampled from a higher resolution picture before being used as a reference for pictures from a less important position in the scalability hierarchy.

Assignees

• Pandit Purvin Bibhas
• Yin Peng
• Gomila Cristina
• Interdigital Madison Patent Holdings

Inventors

• Pandit Purvin Bibhas
• Yin Peng
• Gomila Cristina

Classifications

• H04N19/70

  characterised by syntax aspects related to video coding, e.g. related to compression standards · CPC title

• H04N19/59 Primary

  involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution · CPC title

• H04N19/105

  Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction · CPC title

• H04N19/597

  specially adapted for multi-view video sequence encoding · CPC title

• H04N13/00 Primary

  Stereoscopic video systems; Multi-view video systems; Details thereof · CPC title