Image encoding apparatus, method of image encoding, and recording medium, image decoding apparatus, method of image decoding, and recording medium

An image encoding apparatus capable of encoding an image including a tile, the tile including a plurality of block rows, the image encoding apparatus comprising:

• an encoding unit configured to perform specific encoding processing on an image including a plurality of tiles, the specific encoding processing including referring to information updated in encoding of a block in a first block row, in encoding of a first block in a second block row subsequent to the first block row, and
• an information encoding unit configured to encode an entry point offset indicating a size of data corresponding to a block row included in the tile, based on a number of blocks in a height direction in the tile, in a case where the image includes a plurality of tiles and the specific encoding processing is performed by the encoding unit,
• wherein the information encoding unit is configured to encode a flag indicating specific decoding processing corresponding to the specific encoding processing is to be performed, in a case where the specific encoding processing is performed by the encoding unit.

An image encoding method capable of encoding an image including a tile, the tile including a plurality of block rows, the image encoding method comprising:

• performing specific encoding processing on an image including a plurality of tiles, the specific encoding processing including referring to information updated in encoding of a block in a first block row, in encoding of a first block in a second block row subsequent to the first block row, and
• encoding an entry point offset indicating a size of data corresponding to a block row included in the tile, based on a number of blocks in a height direction in the tile, in a case where the image includes a plurality of tiles and the specific encoding processing is performed,
• wherein the encoding is configured to encode a flag indicating specific decoding processing corresponding to the specific encoding processing is to be performed, in a case where the specific encoding processing is performed.

A non-transitory computer-readable storage medium storing a computer-readable program for causing a computer to execute an image encoding method capable of encoding an image including a tile, the tile including a plurality of block rows, the image encoding method comprising:

• performing specific encoding processing on an image including a plurality of tiles, the specific encoding processing including referring to information updated in encoding of a block in a first block row, in encoding of a first block in a second block row subsequent to the first block row, and
• encoding an entry point offset indicating a size of data corresponding to a block row included in the tile, based on a number of blocks in a height direction in the tile, in a case where the image includes a plurality of tiles and the specific encoding processing is performed,
• wherein the encoding is configured to encode a flag indicating specific decoding processing corresponding to the specific encoding processing is to be performed, in a case where the specific encoding processing is performed.