| CPC H04N 19/119 (2014.11) [H04N 19/105 (2014.11); H04N 19/174 (2014.11); H04N 19/176 (2014.11); H04N 19/187 (2014.11); H04N 19/30 (2014.11); H04N 19/46 (2014.11); H04N 19/70 (2014.11)] | 15 Claims |
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1. An image encoding device for encoding image data including a base layer and at least one enhancement layer, the image encoding device comprising:
circuitry configured to:
generate control information designating, for a tile of an enhancement layer, a permitted reference area in the base layer, wherein each of the base layer, the at least one enhancement layer, and the permitted reference area comprise one or more tiles, wherein for each of the base layer and the at least one enhancement layer a picture of the image data is divided into the tiles which are independently decodable;
encode the tile of the enhancement layer with reference to encoding-related information of the permitted reference area in the base layer according to the control information;
generate information indicating that a tile division of the enhancement layer is similar to a tile division of the base layer such that a number of tile columns and a number of tile rows of the enhancement layer is same as a number of tile columns and a number of tile rows of the base layer;
generate control information determination information serving as information used to restrict transmission of tile division information including the number of tile columns and the number of tile rows of the enhancement layer based on the information indicating that the tile division of the enhancement layer is similar to the tile division of the base layer;
generate the control information to not include the tile division information which includes the number of tile columns and the number of tile rows of the enhancement layer based on the control information determination information; and
transmit encoded data of the image data and the control information which does not include the number of tile columns and the number of tile rows of the enhancement layer.
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