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

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.

What is claimed is: 
     
         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 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.   
     
     
         3 . 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.