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

Claim 2:
3. A non-transitory computer-readable recording medium having embodied thereon a picture decoding program for decoding a picture in units of blocks obtained by partitioning, the picture decoding program comprising:
a decoding step of decoding block partitioning information on a first block; and
a block partitioning step of recursively partitioning the picture into rectangles of a predetermined size on the basis of the block partitioning information to generate the first block, the block partitioning step including
a quad splitting step of partitioning 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 splitting step of partitioning 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 splitting step 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 splitting step 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.