IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS

摘要

An image encoding method of an embodiment of the invention comprises: a dividing step (S201) of dividing a picture into a plurality of tiles; an encoding step (S202) of encoding each of the plurality of tiles, thereby generating a plurality of pieces of encoded data; and a bitstream generating step (S203) of generating a bitstream including the plurality of pieces of encoded data. The encoding step (S202) comprises: a code string generating step (S211) of encoding a first tile, which is one of the plurality of tiles, without referring to encoding information used for encoding the other tiles, thereby generating a first code string; and an alignment step (S213) of adding a bit string to the end of the first code string, thereby causing the bit length of a first piece of encoded data, which is one of the plurality of pieces of encoded data, to be a multiple of N bits (where N is an integer equal to or greater than two).