MOVING PICTURE CODING DEVICE, MOVING PICTURE CODING METHOD AND MOVING PICTURE CODING PROGRAM, AND MOVING PICTURE DECODING DEVICE, MOVING PICTURE DECODING METHOD AND MOVING PICTURE DECODING PROGRAM

• US 20140355687A1
• Filed: 06/09/2014
• Published: 12/04/2014
• Est. Priority Date: 12/28/2011
• Status: Active Grant

• Current Assignee: JVC Kenwood Corporation
• Original Assignee: JVC Kenwood Corporation
• Inventors: TAKEHARA, Hideki, NAKAMURA, Hiroya, FUKUSHIMA, Shigeru
• Granted Patent: US 10,271,063 B2
• Time in Patent Office: Days
• US Class Current: 375/240.16
• CPC Class Codes: H04N 19/105 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 Class Codes: H04N 19/172 the region being a picture, frame or field
• CPC Class Codes: H04N 19/176 the region being a block, e.g. a macroblock
• CPC Class Codes: H04N 19/43 Hardware specially adapted for motion estimation or compensation
• CPC Class Codes: H04N 19/503 involving temporal prediction adaptive coding with adaptive selection between spatial and temporal predictive coding H04N19/107; adaptive coding with adaptive selection among a plurality of temporal predictive coding modes H04N19/109
• CPC Class Codes: H04N 19/513 Processing of motion vectors
• CPC Class Codes: H04N 19/52 by predictive encoding
• CPC Class Codes: H04N 19/593 involving spatial prediction techniques
• CPC Class Codes: H04N 19/70 characterised by syntax aspects related to video coding, e.g. related to compression standards

Abstract

A merging motion information candidate generation unit derives, when information indicating whether or not to derive a merging motion information candidate shared for all prediction blocks in a coding block is information indicating the derivation of a merging motion information candidate shared for all the prediction blocks in the coding block, a plurality of merging motion information candidates shared for all the prediction blocks in the coding block. A merging motion information selection unit selects one merging motion information candidate from the plurality of merging motion information candidates and uses the selected merging motion information candidate in a prediction block subject to coding.

Claims

1. A moving picture coding device adapted to code a coding block consisting of greater than or equal to one prediction block, comprising:

a merging motion information candidate generation unit configured to derive, when information indicating whether or not to derive a merging motion information candidate shared for all prediction blocks in the coding block is information indicating the derivation of a merging motion information candidate shared for all the prediction blocks in the coding block, a plurality of merging motion information candidates shared for all the prediction blocks in the coding block;

a merging motion information selection unit configured to select one merging motion information candidate from the plurality of merging motion information candidates and to use the selected merging motion information candidate in a prediction block subject to coding; and

a coding unit configured to code an index for specifying the selected merging motion information candidate as a candidate specifying index.

2. A moving picture decoding device adapted to decode a decoding block consisting of greater than or equal to one prediction block, comprising:

a decoding unit configured to decode, from a bitstream in which an index for specifying a merging motion information candidate used in a prediction block subject to decoding is coded as a candidate specifying index, the candidate specifying index;

a merging motion information candidate generation unit configured to derive, when information indicating whether or not to derive a merging motion information candidate shared for all prediction blocks in the decoding block is information indicating the derivation of a merging motion information candidate shared for all the prediction blocks in the decoding block, a plurality of merging motion information candidates shared for all the prediction blocks in the decoding block; and

a merging motion information selection unit configured to select one merging motion information candidate from the plurality of merging motion information candidates based on the candidate specifying index and to use the selected merging motion information candidate in the prediction block subject to decoding.

3. A moving picture decoding method for decoding a decoding block consisting of greater than or equal to one prediction block, comprising:

decoding, from a bitstream in which an index for specifying a merging motion information candidate used in a prediction block subject to decoding is coded as a candidate specifying index, the candidate specifying index;

deriving, when information indicating whether or not to derive a merging motion information candidate shared for all prediction blocks in the decoding block is information indicating the derivation of a merging motion information candidate shared for all the prediction blocks in the decoding block, a plurality of merging motion information candidates shared for all the prediction blocks in the decoding block; and

selecting one merging motion information candidate from the plurality of merging motion information candidates based on the candidate specifying index and using the selected merging motion information candidate in the prediction block subject to decoding.

4. A non-transitory computer-readable recording medium having embodied thereon a moving picture decoding program adapted to decode a decoding block consisting of greater than or equal to one prediction block, the moving picture decoding program comprising:

a decoding module configured to decode, from a bitstream in which an index for specifying a merging motion information candidate used in a prediction block subject to decoding is coded as a candidate specifying index, the candidate specifying index;

a merging motion information candidate generation module configured to derive, when information indicating whether or not to derive a merging motion information candidate shared for all prediction blocks in the decoding block is information indicating the derivation of a merging motion information candidate shared for all the prediction blocks in the decoding block, a plurality of merging motion information candidates shared for all the prediction blocks in the decoding block; and

a merging motion information selection module configured to select one merging motion information candidate from the plurality of merging motion information candidates based on the candidate specifying index and to use the selected merging motion information candidate in the prediction block subject to decoding.

5. A transmitting device comprising:

a packet processing unit configured to packetize a bitstream coded by a moving picture coding method adapted to code a coding block consisting of greater than or equal to one prediction block so as to obtain coding data; and

a transmitting unit configured to transmit the coding data that has been packetized,

wherein the moving picture coding method includes;

deriving, when information indicating whether or not to derive a merging motion information candidate shared for all prediction blocks in the coding block is information indicating the derivation of a merging motion information candidate shared for all the prediction blocks in the coding block, a plurality of merging motion information candidates shared for all the prediction blocks in the coding block;

selecting one merging motion information candidate from the plurality of merging motion information candidates and using the selected merging motion information candidate in a prediction block subject to coding; and

coding an index for specifying the selected merging motion information candidate as a candidate specifying index.

6. A transmitting method comprising:

packetizing a bitstream coded by a moving picture coding method adapted to code a coding block consisting of greater than or equal to one prediction block so as to obtain coding data; and

transmitting the coding data that has been packetized,

wherein the moving picture coding method includes;

deriving, when information indicating whether or not to derive a merging motion information candidate shared for all prediction blocks in the coding block is information indicating the derivation of a merging motion information candidate shared for all the prediction blocks in the coding block, a plurality of merging motion information candidates shared for all the prediction blocks in the coding block;

selecting one merging motion information candidate from the plurality of merging motion information candidates and using the selected merging motion information candidate in a prediction block subject to coding; and

coding an index for specifying the selected merging motion information candidate as a candidate specifying index.

7. A receiving device adapted to decode a decoding block consisting of greater than or equal to one prediction block from a bitstream, comprising:

a receiving unit configured to receive coding data in which a moving picture is coded;

a packet processing unit configured to depacketize the coding data so as to generate the bitstream;

a decoding unit configured to decode, from a bitstream in which an index for specifying a merging motion information candidate used in a prediction block subject to decoding in the bitstream from which the decoding block is decoded is coded as a candidate specifying index, the candidate specifying index;

a merging motion information candidate generation unit configured to derive, when information indicating whether or not to derive a merging motion information candidate shared for all prediction blocks in the decoding block is information indicating the derivation of a merging motion information candidate shared for all the prediction blocks in the decoding block, a plurality of merging motion information candidates shared for all the prediction blocks in the decoding block; and

a merging motion information selection unit configured to select one merging motion information candidate from the plurality of merging motion information candidates based on the candidate specifying index and to use the selected merging motion information candidate in the prediction block subject to decoding.