US 8,559,505 B2 · Method and apparatus for decoding/encoding a video signal

Abstract

The method includes the steps of obtaining identification information representing multi-view video data stream including initialization information of a reference picture list for a random access slice, obtaining initialization information of a reference picture list for the random access slice based on the identification information, the initialization information representing a reference relation between a plurality of views, initializing the reference picture list using the initialization information, obtaining modification information for the initialized reference picture list from a multi-view video data stream, modifying the initialized reference picture list for inter-view prediction based on the modification information.

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Claims13

Dependent claims

A method for decoding multi-view video data in a multi-view video stream with a decoding apparatus, comprising:

receiving, with the decoding apparatus, the multi-view video stream, the multi-view video stream including a random access picture, the random access picture including a random access slice, the random access slice referencing only slices corresponding to a same time and a different view of the random access picture;
obtaining, with the decoding apparatus, identification information representing the multi-view video stream including initialization information of a reference picture list for the random access slice;
obtaining, with the decoding apparatus, the initialization information of the reference picture list for the random access slice based on the identification information, the initialization information representing a reference relation between a plurality of views, the initialization information including view number information and view identification information, the view number information indicating a number of reference pictures referred for inter-view prediction of the random access picture, the view identification information identifying to which of the plurality of views each of the reference pictures belongs;
initializing, with the decoding apparatus, the reference picture list, the initializing including assigning an inter-view reference index to the reference picture based on the view number information and the view identification information, the inter-view reference index identifying the reference picture in the initialized reference picture list used for inter-view prediction of a block to be decoded in the random access picture, the block to be decoded having a same time with the reference picture and a different view from the reference picture;
obtaining, with the decoding apparatus, modification information for the initialized reference picture list from the multi-view video stream, the modification information representing how to change the inter-view reference index in the initialized reference picture list;
determining, with the decoding apparatus, an assignment modification value for changing the inter-view reference index in the initialized reference picture list according to the modification information;
modifying, with the decoding apparatus, the initialized reference picture list for inter-view prediction, wherein the modifying includes reordering the reference picture by changing the inter-view reference index assigned to the reference picture based on the determined assignment modification value;
determining, with the decoding apparatus, a prediction value of a macroblock in the random access picture based on the modified reference picture list;
and
decoding, with the decoding apparatus, the macroblock using the prediction value,
wherein the initialization information is obtained based on a value indicating decoding order between the plurality of views.

8 more elements

An apparatus for decoding multi-view video data in a multi-view video stream, comprising:

a parsing unit receiving the multi-view video stream, the multi-view video stream including a random access picture, the random access picture including a random access slice, the random access slice referencing only slices corresponding to a same time and a different view of the random access picture, and obtaining identification information representing the multi-view video data stream including initialization information of a reference picture list for the random access slice, and obtaining the initialization information of the reference picture list for the random access slice based on the identification information, the initialization information representing a reference relation between a plurality of views, the initialization information including view number information and view identification information, the view number information indicating a number of reference pictures referred for inter-view prediction of the random access picture, the view identification information identifying to which of the plurality of views each of the reference pictures belongs;
a decoded picture buffer unit initializing the reference picture list, the initializing including assigning an inter-view reference index to the reference picture based on the view number information and the view identification information, the inter-view reference index identifying the reference picture in the initialized reference picture list used for inter-view prediction of a block to be decoded in the random access picture, the block to be decoded having a same time with the reference picture and a different view from the reference picture, and obtaining modification information for the initialized reference picture list from the multi-view video stream, the modification information representing how to change the inter-view reference index in the initialized reference picture list, and determining an assignment modification value for changing the inter-view reference index in the initialized reference picture list according to the modification information, and modifying the initialized reference picture list for inter-view prediction, wherein the modifying includes reordering the reference picture by changing the inter-view reference index assigned to the reference picture based on the determined assignment modification value;
and
an inter-prediction unit determining a prediction value of a macroblock in the random access picture based on the modified reference picture list, and
decoding the macroblock using the prediction value,
wherein the initialization information is obtained based on a value indicating decoding order between the plurality of views.

3 more elements

Dependencies are inferred from the claim text.

Description23,774 words

Summary611 words

#This application claims priority from PCT International Application No. PCT/KR2007/001583 filed on Mar. 30, 2007, which claims priority on U.S. provisional application Nos. 60/787,171; 60/801,398; 60/810,642; 60/830,601; 60/832,153; 60/837,925; 60/840,032; and 60/842,152; filed on Mar. 30, 2006, May 19, 2006, Jun. 5, 2006, Jul. 14, 2006, Jul. 21, 2006, Aug. 16, 2006, Aug. 25, 2006, and Sep. 5, 2006. The entire contents of ball of these applications are incorporated herein by reference.

#Compression encoding means a series of signal processing techniques for transmitting digitalized information via communication circuit or storing digitalized information in a form suitable for a storage medium. Objects for the compression encoding include audio, video, text, and the like. In particular, a technique for performing compression encoding on a sequence is called video sequence compression. The video sequence is generally characterized in having spatial redundancy and temporal redundancy.

#The present invention is related to encoding and/or decoding a video signal.

Brief description of the drawings43 figures

#FIG. 1 is a schematic block diagram of an apparatus for decoding a video signal according to an embodiment.

#FIG. 2 is a diagram of configuration information for a multi-view video addable to a multi-view video coded bit stream according to an embodiment of the present invention.

#FIG. 3 is an internal block diagram of a reference picture list constructing unit 620 according to an embodiment of the present invention.

Detailed description22,006 words

#Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments may be embodied in many different forms and should not be construed as being limited to the example embodiments set forth herein. Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those who are skilled in the art. In some example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail to avoid the unclear interpretation of the example embodiments. Throughout the specification, like reference numerals in the drawings denote like elements.

#The technique of compressing and encoding video signal data considers spatial redundancy, temporal redundancy, scalable redundancy, and inter-view redundancy. And, it is also able to perform a compression coding by considering a mutual redundancy between views in the compression encoding process. The technique for the compression coding, which considers the inter-view redundancy, is just an embodiment of the present invention. And, the technical ideas of the embodiments of the present invention are applicable to temporal redundancy, scalable redundancy, etc.

#Looking into a configuration of a bit stream in H.264/AVC, there exists a separate layer structure called a NAL (network abstraction layer) between a VCL (video coding layer) dealing with a moving picture encoding process itself and a lower system that transports and stores encoded information. An output from an encoding process is VCL data and is mapped by NAL units prior to transport or storage. Each NAL unit includes compressed video data or RBSP (raw byte sequence payload: result data of moving picture compression) that is the data corresponding to header information.

Facts

Application

12/585,989Filed 30 Sep 2009

Published

US 2010/0091883 A115 Apr 2010

Granted

15 Oct 2013

Term ends

1 Nov 2030

Estimated · how

20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment, including 397 days of adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification7 codes

H04N 19/573
Motion estimation or motion compensation: motion compensation with multiple frame prediction using two or more reference frames in a given…
H04N 19/50
Methods or arrangements for coding, decoding, compressing or decompressing digital video signals: using predictive coding
H04N 19/597
Using predictive coding: specially adapted for multi-view video sequence encoding
H04N 19/70
Methods or arrangements for coding, decoding, compressing or decompressing digital video signals: characterised by syntax aspects related to video…

Method and apparatus for decoding/encoding a video signal

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Method and apparatus for decoding/encoding a video signal

Life of this patent

Life of this patent

Abstract

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Claims13

Description23,774 words

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Classification7 codes

Life of this patent

Description23,774 words