Patent ID: 11924420
Assignee: JVCKENWOOD CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. A picture coding device structured to code a picture in units of blocks obtained by partitioning, the picture coding device comprising:
a block partitioner structured to recursively partition the picture into rectangles of a predetermined size to generate a first block; and
a coder structured to code block partitioning information on 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 obtaincd by partitioning 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.