IMAGE ENCODING METHOD AND IMAGE DECODING METHOD

摘要

The image encoding method includes: generating a reference picture list for determining reference pictures; determining a co-located picture; adding, to the list, a motion vector for each corresponding block that is included in a current picture to be encoded and is adjacent to a current block to be encoded or that is included in the co-located picture and close to the current block; selecting a motion vector predictor from the list; and encoding a difference between a motion vector of the current block encoded using the motion vector of the current block and the motion vector predictor selected. In the encoding, when the current picture is of a specific picture type, the motion vector is generated for each of all blocks included in the current picture with reference to the reference pictures belonging to a view different from a view to which the current picture belongs.

主权项

1. An image encoding method of encoding a plurality of pictures on a block-by-block basis, the image encoding method comprising:
determining, among the pictures, reference pictures to be used for encoding a current block to be encoded which is included in a current picture to be encoded; determining, among the reference pictures, a first picture to be used for deriving a motion vector predictor used for encoding a motion vector of the current block; adding, to a list, (i) a motion vector of at least one adjacent block spatially adjacent to the current block or (ii) a motion vector of at least one first block that is included in the first picture and located spatially close to the current block; selecting, as the motion vector predictor, one of the motion vectors added to the list; and encoding (i) the current block using the motion vector of the current block and (ii) a difference between the motion vector of the current block and the motion vector predictor selected, wherein, in the encoding, when the current picture is of a specific picture type, the motion vector is generated for each of all blocks included in the current picture with reference to the reference pictures belonging to a view different from a view to which the current picture belongs.