METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE USING VARIABLE-SIZE MACROBLOCKS

摘要

A video decoding apparatus using a tree structure, includes: a decoder to decode, from a bitstream, a partition flag indicating whether each block, starting from a block corresponding to an uppermost layer of the tree structure, is divided into four blocks of a lower layer, and thereby identify a block which is not further divided, and decode prediction type information on the identified block from the bitstream; and a reconstructor to reconstruct the identified block by using a prediction mode indicated by the prediction type information, wherein, when a block of a first layer is divided into four blocks of a second layer which is a lower layer of the first layer, the decoder is configured to decode the partition flag for each of the four blocks of the second layer in a predetermined order.

主权项

1. A video decoding apparatus using a tree structure, the apparatus comprising:
a decoder configured to
decode, from a bitstream, a partition flag indicating whether each block, starting from a block corresponding to an uppermost layer of the tree structure, is divided into four blocks of a lower layer, and thereby identify a block which is not further divided, anddecode prediction type information on the identified block from the bitstream; and a reconstructor configured to reconstruct the identified block by using a prediction mode indicated by the prediction type information, wherein, when a block of a first layer is divided into four blocks of a second layer which is a lower layer of the first layer, the decoder is configured to decode the partition flag for each of the four blocks of the second layer in a predetermined order, and wherein, when a block among the four blocks of the second layer is divided into four blocks of a third layer which is a lower layer of the second layer, the decoder is configured to decode the partition flag for each of the four blocks of the third layer before decoding the partition flag for a next block of the second layer in the predetermined order.