US 11,924,420 B2
Picture decoding device, picture decoding method, and picture decoding program
Hiroyuki Kurashige, Yokohama (JP)
Assigned to JVCKENWOOD Corporation, Yokohama (JP)
Filed by JVCKENWOOD Corporation, Yokohama (JP)
Filed on Mar. 18, 2021, as Appl. No. 17/205,145.
Application 17/205,145 is a continuation of application No. PCT/JP2019/046812, filed on Nov. 29, 2019.
Claims priority of application No. 2018-225467 (JP), filed on Nov. 30, 2018; and application No. 2019-181258 (JP), filed on Oct. 1, 2019.
Prior Publication US 2021/0274173 A1, Sep. 2, 2021
Int. Cl. H04N 19/119 (2014.01); H04N 19/107 (2014.01); H04N 19/167 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/119 (2014.11) [H04N 19/107 (2014.11); H04N 19/167 (2014.11); H04N 19/176 (2014.11)] 6 Claims
OG exemplary drawing
 
1. A picture decoding device structured to decode a picture in units of blocks obtained by partitioning, the picture decoding device comprising:
a decoder structured to decode block partitioning information on a first block; and
a block partitioner structured to recursively partition the picture into rectangles of a predetermined size on the basis of the block partitioning information to generate the first block, the block partitioner including
a quad splitter structured to partition the first block obtained by recursive partitioning in half in both a horizontal direction and a vertical direction to generate four blocks as second blocks, and
a binary/ternary splitter structured to partition the first block obtained by recursive partitioning into two or three in the horizontal direction or the vertical direction to generate two or three blocks as third blocks, wherein
the binary/ternary splitter disallows partitioning of the first block into three and disallows partitioning of the first block into two by a split line in the horizontal direction and allows partitioning of the first block into two by a split line in the vertical direction when partitioning of the first block into two by the split line in the horizontal direction causes the partitioned third blocks to be located beyond a right side of a picture boundary, and partitioning of the first block into two by the split line in the vertical direction causes the partitioned third blocks not to be located beyond a lower side of the picture boundary, and wherein
the binary/ternary splitter disallows partitioning of the first block into three and disallows partitioning of the first block into two by the split line in the vertical direction and allows partitioning of the first block into two by the split line in the horizontal direction when partitioning of the first block into two by the split line in the vertical direction causes the partitioned third blocks to be located beyond a lower side of the picture boundary, and partitioning of the first block into two by the split line in the horizontal direction causes the partitioned third blocks not to be located beyond a right side of the picture boundary.