Image decoding apparatus and image coding apparatus
An image decoding apparatus is provided with a CT information decoding unit that decodes division information indicating a division method for binary tree division with respect to a coding node of a coding tree unit, and performs the binary tree division with respect to the coding node by referring to the division information of another decoded coding node.
1. An image decoding apparatus configured to decode a picture for each coding tree unit, comprising:
a header decoding circuitry configured to receive coded data including the coded tree unit; and
a division information decoding circuitry configured to decode division information indicating a division method of division with respect to coding nodes in the coding tree unit, wherein
the division information decoding ciruitry is configured to determine whether or not a hierarchy of the coding node is deeper than a predetermined hierarchy and refer to the division information of another decoded coding node.
2. The image decoding apparatus according to claim 1 ,
wherein the division decoding circuitry performs the binary tree division with respect to a coding node by referring to the division information of another decoded coding node, in a case where a hierarchy of the coding node is deeper than a predetermined hierarchy.
3. An image coding apparatus configured to divide a picture into coding tree units to code the picture, comprising:
a division information coding circuitry configured to code division information indicating a division method of division with respect to coding nodes in the coding tree units; and
a dividing circuitry configured to determine whether or not a hierarchy of the coding node is deeper than a predetermined hierarchy and refer to the division information of another decoded coding node.