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

• US 20190215528A1
• Filed: 02/19/2019
• Published: 07/11/2019
• 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 10,448,044 B2
• Time in Patent Office: Days
• 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 encode a coding block consisting of two prediction blocks, comprising:

a coding unit configured to encode an index into a bitstream, the index is specifying a merging motion information candidate used in a prediction block subject to encoding;

a merging motion information candidate list generation unit configured to generate a merging motion information candidate list including a plurality of merging motion information candidates for all the prediction blocks in the coding block using candidate blocks not neighboring the prediction block but neighboring the coding block, when a size of the coding block is smaller than a threshold size;

a merging motion information selection unit configured to select one merging motion information candidate from the merging motion information candidate list and to decide the index; and

a processing unit including the coding unit, the merging motion information candidate list generation unit, and the merging motion information selection unit.

2. A moving picture coding method adapted to encode a coding block consisting of two prediction blocks, comprising:

encoding an index into a bitstream, the index is specifying a merging motion information candidate used in a prediction block subject to encoding;

generating a merging motion information candidate list including a plurality of merging motion information candidates for all the prediction blocks in the coding block using candidate blocks not neighboring the prediction block but neighboring the coding block, when a size of the coding block is smaller than a threshold size; and

selecting one merging motion information candidate from the merging motion information candidate list and to decide the index.

3. A non-transitory computer-readable recording medium having embodied thereon a moving picture coding program adapted to encode a coding block consisting of two prediction blocks, the moving picture coding program causing a computer to execute:

encoding an index into a bitstream, the index is specifying a merging motion information candidate used in a prediction block subject to encoding;

generating a merging motion information candidate list including a plurality of merging motion information candidates for all the prediction blocks in the coding block using candidate blocks not neighboring the prediction block but neighboring the coding block, when a size of the coding block is smaller than a threshold size; and

selecting one merging motion information candidate from the merging motion information candidate list and to decide the index.

4. A moving picture decoding device adapted to decode a decoding block consisting of two prediction blocks, comprising:

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

a merging motion information candidate list generation unit configured to generate a merging motion information candidate list including a plurality of merging motion information candidates for all the prediction blocks in the decoding block using candidate blocks not neighboring the prediction block but neighboring the decoding block, when a size of the decoding block is smaller than a threshold size;

a merging motion information selection unit configured to select one merging motion information candidate from the merging motion information candidate list based on the index; and

a processing unit including the decoding unit, the merging motion information candidate list generation unit, and the merging motion information selection unit.

5. A moving picture decoding method adapted to decode a decoding block consisting of two prediction blocks, comprising:

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

generating a merging motion information candidate list including a plurality of merging motion information candidates for all the prediction blocks in the decoding block using candidate blocks not neighboring the prediction block but neighboring the decoding block, when a size of the decoding block is smaller than a threshold size; and

selecting one merging motion information candidate from the merging motion information candidate list based on the index.

6. A non-transitory computer-readable recording medium having embodied thereon a moving picture decoding program adapted to decode a decoding block consisting of two prediction blocks, the moving picture decoding program causing a computer to execute:

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

generating a merging motion information candidate list including a plurality of merging motion information candidates for all the prediction blocks in the decoding block using candidate blocks not neighboring the prediction block but neighboring the decoding block, when a size of the decoding block is smaller than a threshold size; and

selecting one merging motion information candidate from the merging motion information candidate list based on the index.